[Keyboard] add rhymestone by marksard (#9708)

* Keyboard: add treeadstone48

* rename layout defines

* Use of pragma once

* move common include code

* fixed info.json

* change keymap layout from kc to normal

* fix alpha revision keymap

* fixed info.json

* remove USE_Link_Time_Optimization

* Add keyboard the Rhymestone

* fixed by PR review

* fixed by review

* Update keyboards/rhymestone/readme.md

fixed

* Fixed possible changes to oled_write_P

* Change the name of the layout definition

* Update keyboards/rhymestone/info.json

* Update keyboards/rhymestone/keymaps/default/keymap.c

* Update keyboards/rhymestone/keymaps/default/keymap.c

* Update keyboards/rhymestone/keymaps/default/keymap.c

* Update keyboards/rhymestone/keymaps/default/keymap.c

* Update keyboards/rhymestone/keymaps/switch_tester/keymap.c

* Update keyboards/rhymestone/keymaps/switch_tester/keymap.c

* Update keyboards/rhymestone/rev1/rev1.h

* add empty rules.mk in rev1

* Update from other review

* Update keyboards/rhymestone/rules.mk

* fixed other review

* move rhymestone to marksard directory

* move rhymestone to marksard directory (Commit the necessary modifications)

* remove

16 files changed, 1307 insertions, 0 deletions

diff --git a/keyboards/marksard/rhymestone/common/glcdfont.c b/keyboards/marksard/rhymestone/common/glcdfont.c
new file mode 100644
index 0000000000..d9438aa5a7
--- /dev/null
+++ b/keyboards/marksard/rhymestone/common/glcdfont.c
@@ -0,0 +1,233 @@
+// This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
+// See gfxfont.h for newer custom bitmap font info.
+
+#include "progmem.h"
+
+// Standard ASCII 5x7 font
+
+static const unsigned char font[] PROGMEM = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x3E, 0x5B, 0x4F, 0x5B, 0x3E, 0x00,
+  0x3E, 0x6B, 0x4F, 0x6B, 0x3E, 0x00,
+  0x1C, 0x3E, 0x7C, 0x3E, 0x1C, 0x00,
+  0x18, 0x3C, 0x7E, 0x3C, 0x18, 0x00,
+  0x1C, 0x57, 0x7D, 0x57, 0x1C, 0x00,
+  0x1C, 0x5E, 0x7F, 0x5E, 0x1C, 0x00,
+  0x00, 0x18, 0x3C, 0x18, 0x00, 0x00,
+  0xFF, 0xE7, 0xC3, 0xE7, 0xFF, 0x00,
+  0x00, 0x18, 0x24, 0x18, 0x00, 0x00,
+  0xFF, 0xE7, 0xDB, 0xE7, 0xFF, 0x00,
+  0x30, 0x48, 0x3A, 0x06, 0x0E, 0x00,
+  0x26, 0x29, 0x79, 0x29, 0x26, 0x00,
+  0x40, 0x7F, 0x05, 0x05, 0x07, 0x00,
+  0x40, 0x7F, 0x05, 0x25, 0x3F, 0x00,
+  0x5A, 0x3C, 0xE7, 0x3C, 0x5A, 0x00,
+  0x7F, 0x3E, 0x1C, 0x1C, 0x08, 0x00,
+  0x08, 0x1C, 0x1C, 0x3E, 0x7F, 0x00,
+  0x14, 0x22, 0x7F, 0x22, 0x14, 0x00,
+  0x5F, 0x5F, 0x00, 0x5F, 0x5F, 0x00,
+  0x06, 0x09, 0x7F, 0x01, 0x7F, 0x00,
+  0x00, 0x66, 0x89, 0x95, 0x6A, 0x00,
+  0x60, 0x60, 0x60, 0x60, 0x60, 0x00,
+  0x94, 0xA2, 0xFF, 0xA2, 0x94, 0x00,
+  0x08, 0x04, 0x7E, 0x04, 0x08, 0x00,
+  0x10, 0x20, 0x7E, 0x20, 0x10, 0x00,
+  0x08, 0x08, 0x2A, 0x1C, 0x08, 0x00,
+  0x08, 0x1C, 0x2A, 0x08, 0x08, 0x00,
+  0x1E, 0x10, 0x10, 0x10, 0x10, 0x00,
+  0x0C, 0x1E, 0x0C, 0x1E, 0x0C, 0x00,
+  0x30, 0x38, 0x3E, 0x38, 0x30, 0x00,
+  0x06, 0x0E, 0x3E, 0x0E, 0x06, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x5F, 0x00, 0x00, 0x00,
+  0x00, 0x07, 0x00, 0x07, 0x00, 0x00,
+  0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00,
+  0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00,
+  0x23, 0x13, 0x08, 0x64, 0x62, 0x00,
+  0x36, 0x49, 0x56, 0x20, 0x50, 0x00,
+  0x00, 0x08, 0x07, 0x03, 0x00, 0x00,
+  0x00, 0x1C, 0x22, 0x41, 0x00, 0x00,
+  0x00, 0x41, 0x22, 0x1C, 0x00, 0x00,
+  0x2A, 0x1C, 0x7F, 0x1C, 0x2A, 0x00,
+  0x08, 0x08, 0x3E, 0x08, 0x08, 0x00,
+  0x00, 0x80, 0x70, 0x30, 0x00, 0x00,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x00,
+  0x00, 0x00, 0x60, 0x60, 0x00, 0x00,
+  0x20, 0x10, 0x08, 0x04, 0x02, 0x00,
+  0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00,
+  0x00, 0x42, 0x7F, 0x40, 0x00, 0x00,
+  0x72, 0x49, 0x49, 0x49, 0x46, 0x00,
+  0x21, 0x41, 0x49, 0x4D, 0x33, 0x00,
+  0x18, 0x14, 0x12, 0x7F, 0x10, 0x00,
+  0x27, 0x45, 0x45, 0x45, 0x39, 0x00,
+  0x3C, 0x4A, 0x49, 0x49, 0x31, 0x00,
+  0x41, 0x21, 0x11, 0x09, 0x07, 0x00,
+  0x36, 0x49, 0x49, 0x49, 0x36, 0x00,
+  0x46, 0x49, 0x49, 0x29, 0x1E, 0x00,
+  0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
+  0x00, 0x40, 0x34, 0x00, 0x00, 0x00,
+  0x00, 0x08, 0x14, 0x22, 0x41, 0x00,
+  0x14, 0x14, 0x14, 0x14, 0x14, 0x00,
+  0x00, 0x41, 0x22, 0x14, 0x08, 0x00,
+  0x02, 0x01, 0x59, 0x09, 0x06, 0x00,
+  0x3E, 0x41, 0x5D, 0x59, 0x4E, 0x00,
+  0x7C, 0x12, 0x11, 0x12, 0x7C, 0x00,
+  0x7F, 0x49, 0x49, 0x49, 0x36, 0x00,
+  0x3E, 0x41, 0x41, 0x41, 0x22, 0x00,
+  0x7F, 0x41, 0x41, 0x41, 0x3E, 0x00,
+  0x7F, 0x49, 0x49, 0x49, 0x41, 0x00,
+  0x7F, 0x09, 0x09, 0x09, 0x01, 0x00,
+  0x3E, 0x41, 0x41, 0x51, 0x73, 0x00,
+  0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00,
+  0x00, 0x41, 0x7F, 0x41, 0x00, 0x00,
+  0x20, 0x40, 0x41, 0x3F, 0x01, 0x00,
+  0x7F, 0x08, 0x14, 0x22, 0x41, 0x00,
+  0x7F, 0x40, 0x40, 0x40, 0x40, 0x00,
+  0x7F, 0x02, 0x1C, 0x02, 0x7F, 0x00,
+  0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00,
+  0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00,
+  0x7F, 0x09, 0x09, 0x09, 0x06, 0x00,
+  0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00,
+  0x7F, 0x09, 0x19, 0x29, 0x46, 0x00,
+  0x26, 0x49, 0x49, 0x49, 0x32, 0x00,
+  0x03, 0x01, 0x7F, 0x01, 0x03, 0x00,
+  0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00,
+  0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00,
+  0x3F, 0x40, 0x38, 0x40, 0x3F, 0x00,
+  0x63, 0x14, 0x08, 0x14, 0x63, 0x00,
+  0x03, 0x04, 0x78, 0x04, 0x03, 0x00,
+  0x61, 0x59, 0x49, 0x4D, 0x43, 0x00,
+  0x00, 0x7F, 0x41, 0x41, 0x41, 0x00,
+  0x02, 0x04, 0x08, 0x10, 0x20, 0x00,
+  0x00, 0x41, 0x41, 0x41, 0x7F, 0x00,
+  0x04, 0x02, 0x01, 0x02, 0x04, 0x00,
+  0x40, 0x40, 0x40, 0x40, 0x40, 0x00,
+  0x00, 0x03, 0x07, 0x08, 0x00, 0x00,
+  0x20, 0x54, 0x54, 0x78, 0x40, 0x00,
+  0x7F, 0x28, 0x44, 0x44, 0x38, 0x00,
+  0x38, 0x44, 0x44, 0x44, 0x28, 0x00,
+  0x38, 0x44, 0x44, 0x28, 0x7F, 0x00,
+  0x38, 0x54, 0x54, 0x54, 0x18, 0x00,
+  0x00, 0x08, 0x7E, 0x09, 0x02, 0x00,
+  0x18, 0x24, 0x24, 0x1C, 0x78, 0x00,
+  0x7F, 0x08, 0x04, 0x04, 0x78, 0x00,
+  0x00, 0x44, 0x7D, 0x40, 0x00, 0x00,
+  0x20, 0x40, 0x40, 0x3D, 0x00, 0x00,
+  0x7F, 0x10, 0x28, 0x44, 0x00, 0x00,
+  0x00, 0x41, 0x7F, 0x40, 0x00, 0x00,
+  0x7C, 0x04, 0x78, 0x04, 0x78, 0x00,
+  0x7C, 0x08, 0x04, 0x04, 0x78, 0x00,
+  0x38, 0x44, 0x44, 0x44, 0x38, 0x00,
+  0xFC, 0x18, 0x24, 0x24, 0x18, 0x00,
+  0x18, 0x24, 0x24, 0x18, 0xFC, 0x00,
+  0x7C, 0x08, 0x04, 0x04, 0x08, 0x00,
+  0x48, 0x54, 0x54, 0x54, 0x24, 0x00,
+  0x04, 0x04, 0x3F, 0x44, 0x24, 0x00,
+  0x3C, 0x40, 0x40, 0x20, 0x7C, 0x00,
+  0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00,
+  0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00,
+  0x44, 0x28, 0x10, 0x28, 0x44, 0x00,
+  0x4C, 0x10, 0x10, 0x10, 0x7C, 0x00,
+  0x44, 0x64, 0x54, 0x4C, 0x44, 0x00,
+  0x00, 0x08, 0x36, 0x41, 0x00, 0x00,
+  0x00, 0x00, 0x77, 0x00, 0x00, 0x00,
+  0x00, 0x41, 0x36, 0x08, 0x00, 0x00,
+  0x02, 0x01, 0x02, 0x04, 0x02, 0x00,
+  0x3C, 0x26, 0x23, 0x26, 0x3C, 0x00,
+  0x00, 0x00, 0xD8, 0xDE, 0xDE, 0xDE,
+  0x1E, 0x1E, 0x1E, 0x1E, 0xFE, 0xFE,
+  0xFE, 0xFE, 0x00, 0xF0, 0xFF, 0xFF,
+  0xFF, 0xE3, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0x00, 0x80, 0xE0, 0xE0,
+  0xE0, 0x00, 0x00, 0x00, 0x00, 0xE0,
+  0xE0, 0xE0, 0xE0, 0x00, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0x00, 0xC0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0x00, 0x80, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0x00, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xE0, 0xE0, 0x80,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xC0, 0x00,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0x80,
+  0x00, 0xC0, 0xE0, 0xE0, 0xE0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x80, 0xFE, 0xFF, 0xFF, 0x7F, 0x0F,
+  0x0E, 0x0E, 0xCE, 0xFF, 0xFF, 0xFF,
+  0x7F, 0x80, 0xFE, 0xFF, 0xFF, 0x3F,
+  0x01, 0x01, 0x01, 0x81, 0xFF, 0xFF,
+  0xFF, 0x3F, 0xE0, 0xFF, 0xFF, 0xFF,
+  0x8F, 0x80, 0x80, 0x80, 0xF8, 0xFF,
+  0xFF, 0x7F, 0xC1, 0xFE, 0xFF, 0xFF,
+  0x1F, 0x01, 0x01, 0xE1, 0xFF, 0xFF,
+  0xFF, 0x0F, 0x01, 0x01, 0xF1, 0xFF,
+  0xFF, 0xFF, 0x07, 0xFC, 0xFF, 0xFF,
+  0xFF, 0x9D, 0x9D, 0x9D, 0x9D, 0x9F,
+  0x9F, 0x9F, 0x1F, 0x80, 0x9F, 0x9F,
+  0x9F, 0x9F, 0x9D, 0x9D, 0xDD, 0xFD,
+  0xFD, 0xFD, 0x39, 0xC0, 0xFF, 0xFF,
+  0xFF, 0x9F, 0x81, 0x01, 0xF1, 0xFF,
+  0xFF, 0xFF, 0x87, 0x81, 0x81, 0x81,
+  0xF9, 0xFF, 0xFF, 0xFF, 0x03, 0xFC,
+  0xFF, 0xFF, 0x3F, 0x01, 0x01, 0x01,
+  0x01, 0xFF, 0xFF, 0xFF, 0x7F, 0xC0,
+  0xFF, 0xFF, 0xFF, 0x9F, 0x9D, 0x9D,
+  0x9D, 0x9D, 0x9F, 0x9F, 0x1F, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x07, 0x07, 0x07, 0x07, 0x00, 0x00,
+  0x00, 0x00, 0x07, 0x07, 0x07, 0x07,
+  0x00, 0x07, 0x07, 0x07, 0x07, 0x00,
+  0x00, 0x00, 0x00, 0x07, 0x07, 0x07,
+  0x07, 0x60, 0x73, 0x77, 0x77, 0x77,
+  0x77, 0x77, 0x77, 0x7F, 0x7F, 0x7F,
+  0x1F, 0x00, 0x07, 0x07, 0x07, 0x07,
+  0x00, 0x00, 0x00, 0x07, 0x07, 0x07,
+  0x03, 0x00, 0x00, 0x00, 0x07, 0x07,
+  0x07, 0x01, 0x00, 0x07, 0x07, 0x07,
+  0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+  0x07, 0x00, 0x00, 0x07, 0x07, 0x07,
+  0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+  0x07, 0x03, 0x00, 0x03, 0x07, 0x07,
+  0x07, 0x07, 0x07, 0x00, 0x03, 0x07,
+  0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+  0x07, 0x07, 0x03, 0x00, 0x07, 0x07,
+  0x07, 0x07, 0x00, 0x00, 0x00, 0x00,
+  0x07, 0x07, 0x07, 0x07, 0x00, 0x03,
+  0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+  0x07, 0x07, 0x07, 0x07, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
diff --git a/keyboards/marksard/rhymestone/common/oled_helper.c b/keyboards/marksard/rhymestone/common/oled_helper.c
new file mode 100644
index 0000000000..537650025c
--- /dev/null
+++ b/keyboards/marksard/rhymestone/common/oled_helper.c
@@ -0,0 +1,87 @@
+#ifdef OLED_DRIVER_ENABLE
+#include QMK_KEYBOARD_H
+#include <stdio.h>
+#include <string.h>
+
+void render_logo(void) {
+
+  static const char PROGMEM logo_buf[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+
+  oled_write_P(logo_buf, false);
+}
+
+void render_lock_status(void) {
+
+  // Host Keyboard LED Status
+  led_t led_state = host_keyboard_led_state();
+
+  oled_write_P(PSTR("Lock:"), false);
+  if (led_state.num_lock) {
+    oled_write_P(PSTR("Num "), false);
+  }
+  if (led_state.caps_lock) {
+    oled_write_P(PSTR("Caps "), false);
+  }
+  if (led_state.scroll_lock) {
+    oled_write_P(PSTR("Scrl"), false);
+  }
+
+  oled_write_P(PSTR("\n"), false);
+}
+
+static char keylog_buf[24] = "Key state ready.\n";
+const char code_to_name[60] = {
+    ' ', ' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f',
+    'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
+    'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
+    'R', 'E', 'B', 'T', ' ', '-', ' ', '@', ' ', ' ',
+    ' ', ';', ':', ' ', ',', '.', '/', ' ', ' ', ' '};
+
+void update_key_status(uint16_t keycode, keyrecord_t *record) {
+
+  if (!record->event.pressed) return;
+
+  char name = (keycode < 60) ? code_to_name[keycode] : ' ';
+  snprintf(keylog_buf, sizeof(keylog_buf) - 1, "Key:%dx%d %2x %c\n",
+          record->event.key.row, record->event.key.col,
+          (uint16_t)keycode, name);
+}
+
+void render_key_status(void) {
+
+  oled_write(keylog_buf, false);
+}
+
+#ifdef RGBLIGHT_ENABLE
+extern rgblight_config_t rgblight_config;
+
+static char led_buf[24] = "LED state ready.\n";
+rgblight_config_t rgblight_config_bak;
+void update_led_status(void) {
+
+  if (rgblight_config_bak.enable != rgblight_config.enable ||
+      rgblight_config_bak.mode != rgblight_config.mode ||
+      rgblight_config_bak.hue != rgblight_config.hue ||
+      rgblight_config_bak.sat != rgblight_config.sat ||
+      rgblight_config_bak.val != rgblight_config.val
+  ) {
+    snprintf(led_buf, sizeof(led_buf) - 1, "LED%c:%2d hsv:%2d %2d %2d\n",
+      rgblight_config.enable ? '*' : '.', (uint8_t)rgblight_config.mode,
+      (uint8_t)(rgblight_config.hue / RGBLIGHT_HUE_STEP),
+      (uint8_t)(rgblight_config.sat / RGBLIGHT_SAT_STEP),
+      (uint8_t)(rgblight_config.val / RGBLIGHT_VAL_STEP));
+      rgblight_config_bak = rgblight_config;
+  }
+}
+
+void render_led_status(void) {
+
+  oled_write(led_buf, false);
+}
+#endif
+#endif
diff --git a/keyboards/marksard/rhymestone/common/oled_helper.h b/keyboards/marksard/rhymestone/common/oled_helper.h
new file mode 100644
index 0000000000..02f7b94fa5
--- /dev/null
+++ b/keyboards/marksard/rhymestone/common/oled_helper.h
@@ -0,0 +1,32 @@
+#ifdef OLED_DRIVER_ENABLE
+
+void render_logo(void);
+void render_lock_status(void);
+void update_key_status(uint16_t keycode, keyrecord_t *record);
+void render_key_status(void);
+
+#define RENDER_LOGO() render_logo()
+#define RENDER_LOCK_STATUS() render_lock_status()
+#define UPDATE_KEY_STATUS(a, b) update_key_status(a, b)
+#define RENDER_KEY_STATUS() render_key_status()
+
+#ifdef RGBLIGHT_ENABLE
+  void update_led_status(void);
+  void render_led_status(void);
+  #define UPDATE_LED_STATUS() update_led_status()
+  #define RENDER_LED_STATUS() render_led_status()
+#else
+  #define UPDATE_LED_STATUS()
+  #define RENDER_LED_STATUS()
+#endif
+
+#else
+
+#define RENDER_LOGO()
+#define RENDER_LOCK_STATUS()
+#define UPDATE_KEY_STATUS(a, b)
+#define RENDER_KEY_STATUS()
+#define UPDATE_LED_STATUS()
+#define RENDER_LED_STATUS()
+
+#endif
diff --git a/keyboards/marksard/rhymestone/info.json b/keyboards/marksard/rhymestone/info.json
new file mode 100644
index 0000000000..2c1ba9b37c
--- /dev/null
+++ b/keyboards/marksard/rhymestone/info.json
@@ -0,0 +1,213 @@
+{
+    "keyboard_name": "Rhymestone",
+    "url": "https://github.com/marksard/Keyboards",
+    "maintainer": "marksard",
+    "width": 11,
+    "height": 4,
+    "layouts": {
+        "LAYOUT_ortho_4x10": {
+            "layout": [
+                {
+                    "label": "Q",
+                    "x": 0,
+                    "y": 0
+                },
+                {
+                    "label": "W",
+                    "x": 1,
+                    "y": 0
+                },
+                {
+                    "label": "E",
+                    "x": 2,
+                    "y": 0
+                },
+                {
+                    "label": "R",
+                    "x": 3,
+                    "y": 0
+                },
+                {
+                    "label": "T",
+                    "x": 4,
+                    "y": 0
+                },
+                {
+                    "label": "Y",
+                    "x": 6,
+                    "y": 0
+                },
+                {
+                    "label": "U",
+                    "x": 7,
+                    "y": 0
+                },
+                {
+                    "label": "I",
+                    "x": 8,
+                    "y": 0
+                },
+                {
+                    "label": "O",
+                    "x": 9,
+                    "y": 0
+                },
+                {
+                    "label": "P",
+                    "x": 10,
+                    "y": 0
+                },
+                {
+                    "label": "A",
+                    "x": 0,
+                    "y": 1
+                },
+                {
+                    "label": "S",
+                    "x": 1,
+                    "y": 1
+                },
+                {
+                    "label": "D",
+                    "x": 2,
+                    "y": 1
+                },
+                {
+                    "label": "F",
+                    "x": 3,
+                    "y": 1
+                },
+                {
+                    "label": "G",
+                    "x": 4,
+                    "y": 1
+                },
+                {
+                    "label": "H",
+                    "x": 6,
+                    "y": 1
+                },
+                {
+                    "label": "J",
+                    "x": 7,
+                    "y": 1
+                },
+                {
+                    "label": "K",
+                    "x": 8,
+                    "y": 1
+                },
+                {
+                    "label": "L",
+                    "x": 9,
+                    "y": 1
+                },
+                {
+                    "label": "Enter",
+                    "x": 10,
+                    "y": 1
+                },
+                {
+                    "label": "Z",
+                    "x": 0,
+                    "y": 2
+                },
+                {
+                    "label": "X",
+                    "x": 1,
+                    "y": 2
+                },
+                {
+                    "label": "C",
+                    "x": 2,
+                    "y": 2
+                },
+                {
+                    "label": "V",
+                    "x": 3,
+                    "y": 2
+                },
+                {
+                    "label": "B",
+                    "x": 4,
+                    "y": 2
+                },
+                {
+                    "label": "N",
+                    "x": 6,
+                    "y": 2
+                },
+                {
+                    "label": "M",
+                    "x": 7,
+                    "y": 2
+                },
+                {
+                    "label": ",",
+                    "x": 8,
+                    "y": 2
+                },
+                {
+                    "label": ".",
+                    "x": 9,
+                    "y": 2
+                },
+                {
+                    "label": "/",
+                    "x": 10,
+                    "y": 2
+                },
+                {
+                    "label": "Ctrl",
+                    "x": 0,
+                    "y": 3
+                },
+                {
+                    "label": "Win",
+                    "x": 1,
+                    "y": 3
+                },
+                {
+                    "label": "Alt",
+                    "x": 2,
+                    "y": 3
+                },
+                {
+                    "label": "Lower",
+                    "x": 3,
+                    "y": 3
+                },
+                {
+                    "label": "backspace",
+                    "x": 4,
+                    "y": 3
+                },
+                {
+                    "label": "space",
+                    "x": 6,
+                    "y": 3
+                },
+                {
+                    "label": "Upper",
+                    "x": 7,
+                    "y": 3
+                },
+                {
+                    "label": "Alt",
+                    "x": 8,
+                    "y": 3
+                },
+                {
+                    "label": "App",
+                    "x": 9,
+                    "y": 3
+                },
+                {
+                    "label": "Ctrl",
+                    "x": 10,
+                    "y": 3
+                }
+            ]
+        }
+    }
+}
diff --git a/keyboards/marksard/rhymestone/keymaps/default/config.h b/keyboards/marksard/rhymestone/keymaps/default/config.h
new file mode 100644
index 0000000000..95f2d039b2
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/default/config.h
@@ -0,0 +1,27 @@
+/* Copyright 2020 marksard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+// place overrides here
+
+// If you use the HashTwenty(alpha), please enable USE_HASHTWENTY
+// #define USE_HASHTWENTY
+
+// If you plug in the USB on the right side, please enable MASTER_RIGHT
+// #define MASTER_RIGHT
+
+#define OLED_FONT_H "keyboards/rhymestone/common/glcdfont.c"
diff --git a/keyboards/marksard/rhymestone/keymaps/default/keymap.c b/keyboards/marksard/rhymestone/keymaps/default/keymap.c
new file mode 100644
index 0000000000..2d695f76b1
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/default/keymap.c
@@ -0,0 +1,226 @@
+/* Copyright 2020 marksard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+#include "./common/oled_helper.h"
+
+enum layer_number {
+  _BASE,
+  _LOWER,
+  _RAISE,
+  _ADJUST,
+};
+
+enum custom_keycodes {
+  LOWER = SAFE_RANGE,
+  RAISE,
+  ADJUST,
+  KANJI,
+  RGBRST
+};
+
+// Base layer mod tap
+#define KC_Z_SF  LSFT_T(KC_Z)
+#define KC_SLSF  RSFT_T(KC_SLSH)
+
+// Lower layer mod tap
+#define KC_11SF  LSFT_T(KC_F11)
+#define KC_GRSF  RSFT_T(KC_GRV)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_BASE] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+          KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,     KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+          KC_A,     KC_S,     KC_D,     KC_F,     KC_G,     KC_H,     KC_J,     KC_K,     KC_L,   KC_ENT,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       KC_Z_SF,     KC_X,     KC_C,     KC_V,     KC_B,     KC_N,     KC_M,  KC_COMM,   KC_DOT,  KC_SLSF,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       KC_LCTL,  KC_LALT,  KC_LGUI,    LOWER,  KC_BSPC,   KC_SPC,    RAISE,  KC_RGUI,   KC_APP,  KC_RCTL
+  //,---------------------------------------------------------------------------------------------------.
+  ),
+
+  [_LOWER] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+         KC_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,  KC_MINS,   KC_EQL,  KC_LBRC,  KC_RBRC,  KC_BSLS,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+         KC_F6,    KC_F7,    KC_F8,    KC_F9,   KC_F10,  XXXXXXX,  XXXXXXX,  XXXXXXX,  KC_SCLN,  KC_QUOT,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       KC_11SF,   KC_F12,   KC_ESC,   KC_TAB,    KANJI,   KC_DEL,  XXXXXXX,  XXXXXXX,    KC_RO,  KC_GRSF,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       _______,  _______,  _______,  _______,   KC_DEL,  _______,  _______,  _______,  _______,  _______
+  //,---------------------------------------------------------------------------------------------------.
+  ),
+
+  [_RAISE] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+          KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     KC_6,     KC_7,     KC_8,     KC_9,     KC_0,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       KC_LSFT,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  KC_LEFT,  KC_DOWN,    KC_UP,  KC_RGHT,  KC_RSFT,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  KC_MINS,    KC_RO,  KC_COMM,   KC_DOT,  KC_SLSF,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
+  //,---------------------------------------------------------------------------------------------------.
+  ),
+
+  [_ADJUST] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+         RESET,   RGBRST,  AG_NORM,  AG_SWAP,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,   KC_INS,  KC_PSCR,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       RGB_TOG,  RGB_HUI,  RGB_SAI,  RGB_VAI,  XXXXXXX,  KC_MS_L,  KC_MS_D,  KC_MS_U,  KC_MS_R,  KC_NLCK,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       RGB_MOD,  RGB_HUD,  RGB_SAD,  RGB_VAD,  XXXXXXX,  KC_BTN1,  KC_BTN2,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
+  //,---------------------------------------------------------------------------------------------------.
+  )
+};
+
+#define L_BASE _BASE
+#define L_LOWER (1<<_LOWER)
+#define L_RAISE (1<<_RAISE)
+#define L_ADJUST (1<<_ADJUST)
+#define L_ADJUST_TRI (L_ADJUST|L_RAISE|L_LOWER)
+
+#ifdef OLED_DRIVER_ENABLE
+#include <stdio.h>
+#include <string.h>
+
+typedef struct {
+  uint8_t state;
+  char name[8];
+}LAYER_DISPLAY_NAME;
+
+#define LAYER_DISPLAY_MAX 5
+const LAYER_DISPLAY_NAME layer_display_name[LAYER_DISPLAY_MAX] = {
+  {L_BASE, "Base"},
+  {L_BASE + 1, "Base"},
+  {L_LOWER, "Lower"},
+  {L_RAISE, "Raise"},
+  {L_ADJUST_TRI, "Adjust"}
+};
+
+static inline const char* get_leyer_status(void) {
+
+  for (uint8_t i = 0; i < LAYER_DISPLAY_MAX; ++i) {
+    if (layer_state == 0 && layer_display_name[i].state == default_layer_state) {
+
+      return layer_display_name[i].name;
+    } else if (layer_state != 0 && layer_display_name[i].state == layer_state) {
+
+      return layer_display_name[i].name;
+    }
+  }
+
+  return "?";
+}
+
+static char layer_status_buf[24] = "Layer state ready.\n";
+static inline void update_keymap_status(void) {
+
+  snprintf(layer_status_buf, sizeof(layer_status_buf) - 1, "OS:%s Layer:%s\n",
+    keymap_config.swap_lalt_lgui? "win" : "mac", get_leyer_status());
+}
+
+static inline void render_keymap_status(void) {
+
+  oled_write(layer_status_buf, false);
+}
+
+#define UPDATE_KEYMAP_STATUS() update_keymap_status()
+
+static inline void render_status(void) {
+
+  UPDATE_LED_STATUS();
+  RENDER_LED_STATUS();
+  render_keymap_status();
+  RENDER_LOCK_STATUS();
+  RENDER_KEY_STATUS();
+}
+
+oled_rotation_t oled_init_user(oled_rotation_t rotation) {
+
+  if (is_keyboard_master())
+    return OLED_ROTATION_180;  // flips the display 180 degrees if offhand
+  return rotation;
+}
+
+void oled_task_user(void) {
+
+  if (is_keyboard_master()) {
+    render_status();
+  } else {
+    render_logo();
+  }
+}
+
+#else
+
+#define UPDATE_KEYMAP_STATUS()
+
+#endif
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+
+  UPDATE_KEY_STATUS(keycode, record);
+
+  bool result = false;
+  switch (keycode) {
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+      } else {
+        layer_off(_LOWER);
+      }
+
+      update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+      } else {
+        layer_off(_RAISE);
+      }
+
+      update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      break;
+    case KANJI:
+      if (record->event.pressed) {
+        if (keymap_config.swap_lalt_lgui == false) {
+          register_code(KC_LANG2);
+        } else {
+          register_code16(A(KC_GRV));
+        }
+      } else {
+        unregister_code(KC_LANG2);
+      }
+      break;
+    #ifdef RGBLIGHT_ENABLE
+      case RGBRST:
+          if (record->event.pressed) {
+            eeconfig_update_rgblight_default();
+            rgblight_enable();
+          }
+        break;
+    #endif
+    default:
+      result = true;
+      break;
+  }
+
+  UPDATE_KEYMAP_STATUS();
+  return result;
+}
diff --git a/keyboards/marksard/rhymestone/keymaps/default/rules.mk b/keyboards/marksard/rhymestone/keymaps/default/rules.mk
new file mode 100644
index 0000000000..c86cab8cce
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/default/rules.mk
@@ -0,0 +1,9 @@
+MOUSEKEY_ENABLE = yes       # Mouse keys
+TAP_DANCE_ENABLE = no
+
+RGBLIGHT_ENABLE = yes        # Enable keyboard RGB underglow
+OLED_DRIVER_ENABLE = no
+LTO_ENABLE = yes
+
+# If you want to change the display of OLED, you need to change here
+SRC +=  ./common/oled_helper.c \
diff --git a/keyboards/marksard/rhymestone/keymaps/switch_tester/keymap.c b/keyboards/marksard/rhymestone/keymaps/switch_tester/keymap.c
new file mode 100644
index 0000000000..1d4e78af80
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/switch_tester/keymap.c
@@ -0,0 +1,76 @@
+/* Copyright 2020 marksard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_number {
+  _BASE,
+  _ADJUST,
+};
+
+enum custom_keycodes {
+  LOWER = SAFE_RANGE,
+  ADJUST,
+  RGBRST
+};
+
+// Layer Mode aliases
+#define KC_LTAD  LT(_ADJUST, KC_NO)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_BASE] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+       XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       KC_LTAD,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX
+  //,---------------------------------------------------------------------------------------------------.
+  ),
+
+  [_ADJUST] = LAYOUT_ortho_4x10(
+  //,---------------------------------------------------------------------------------------------------.
+         RESET,   RGBRST,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       RGB_TOG,  RGB_HUI,  RGB_SAI,  RGB_VAI,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //|---------+---------+---------+---------+---------+---------+---------+---------+---------+---------|
+       RGB_MOD,  RGB_HUD,  RGB_SAD,  RGB_VAD,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,
+  //`---------+---------+---------+---------+---------+---------+---------+---------+---------+---------'
+       _______,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX
+  //,---------------------------------------------------------------------------------------------------.
+  )
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+
+  bool result = false;
+  switch (keycode) {
+    #ifdef RGBLIGHT_ENABLE
+      case RGBRST:
+          if (record->event.pressed) {
+            eeconfig_update_rgblight_default();
+            rgblight_enable();
+          }
+        break;
+    #endif
+    default:
+      result = true;
+      break;
+  }
+
+  return result;
+}
diff --git a/keyboards/marksard/rhymestone/keymaps/switch_tester/readme.md b/keyboards/marksard/rhymestone/keymaps/switch_tester/readme.md
new file mode 100644
index 0000000000..f85906a83b
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/switch_tester/readme.md
@@ -0,0 +1,3 @@
+# The switch tester keymap for Rhymestone
+
+This keymap is Switch Tester and RGB_MATRIX Light demo.  
diff --git a/keyboards/marksard/rhymestone/keymaps/switch_tester/rules.mk b/keyboards/marksard/rhymestone/keymaps/switch_tester/rules.mk
new file mode 100644
index 0000000000..78824da304
--- /dev/null
+++ b/keyboards/marksard/rhymestone/keymaps/switch_tester/rules.mk
@@ -0,0 +1,7 @@
+MOUSEKEY_ENABLE = no       # Mouse keys
+TAP_DANCE_ENABLE = no
+
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+OLED_DRIVER_ENABLE = no
+LTO_ENABLE = yes
+RGB_MATRIX_ENABLE = WS2812
diff --git a/keyboards/marksard/rhymestone/readme.md b/keyboards/marksard/rhymestone/readme.md
new file mode 100644
index 0000000000..721e8beb35
--- /dev/null
+++ b/keyboards/marksard/rhymestone/readme.md
@@ -0,0 +1,18 @@
+# Rhymestone
+
+![Rhymestone](https://github.com/marksard/Keyboards/blob/7950099e0679a6626dc9f77a70b8c6616d7030cf/_image/_rhymestone.jpg)  
+
+This is 40 keys split Ortholinear keyboard.  
+
+* Keyboard Maintainer: [marksard](https://github.com/marksard)
+* Hardware Supported: Rhymestone PCB (with Pro Micro)
+* Hardware Availability: [marksard keyboards](https://github.com/marksard/Keyboards/blob/master/rhymestone/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make marksard/rhymestone:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+[Build guide](https://github.com/marksard/Keyboards/blob/master/rhymestone/documents/rhymestone_buildguide.md)  
+[Firmware](https://github.com/marksard/qmk_firmware/tree/my_customize/keyboards/rhymestone)  
diff --git a/keyboards/marksard/rhymestone/rev1/config.h b/keyboards/marksard/rhymestone/rev1/config.h
new file mode 100644
index 0000000000..9a1bf0a1d8
--- /dev/null
+++ b/keyboards/marksard/rhymestone/rev1/config.h
@@ -0,0 +1,152 @@
+/*
+Copyright 2020 marksard
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0xDFA1
+#define DEVICE_VER      0x0020
+#define MANUFACTURER    marksard
+#define PRODUCT         Rhymestone
+
+/* key matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 5
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { F4, F5, F6, F7 }
+#define MATRIX_COL_PINS { D4, C6, D7, E6, B4 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D2  // or D1, D2, D3, E6
+
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
+#define RGB_DI_PIN D3
+
+#ifdef RGBLIGHT_ENABLE
+// #ifdef RGB_DI_PIN
+  #define RGBLED_NUM 40
+  #define RGBLED_SPLIT {20, 20}
+  #define RGBLIGHT_HUE_STEP 8
+  #define RGBLIGHT_SAT_STEP 8
+  #define RGBLIGHT_VAL_STEP 8
+  #define RGBLIGHT_LIMIT_VAL 150 /* The maximum brightness level */
+  #define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+/*== all animations enable ==*/
+//   #define RGBLIGHT_ANIMATIONS
+/*== or choose animations ==*/
+//   #define RGBLIGHT_EFFECT_BREATHING
+  #define RGBLIGHT_EFFECT_RAINBOW_MOOD
+  #define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//   #define RGBLIGHT_EFFECT_SNAKE
+  #define RGBLIGHT_EFFECT_KNIGHT
+//   #define RGBLIGHT_EFFECT_CHRISTMAS
+  #define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//   #define RGBLIGHT_EFFECT_RGB_TEST
+//   #define RGBLIGHT_EFFECT_ALTERNATING
+/*== customize breathing effect ==*/
+  /*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+  #define RGBLIGHT_BREATHE_TABLE_SIZE 256      // 256(default) or 128 or 64
+  /*==== use exp() and sin() ====*/
+  #define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85  // 1 to 2.7
+  #define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
+#endif
+
+#ifdef RGB_MATRIX_ENABLE
+  #define RGBLED_NUM 40    // Number of LEDs
+  #define DRIVER_LED_TOTAL RGBLED_NUM
+  #define RGB_MATRIX_KEYPRESSES  // reacts to keypresses
+  // #define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (instead of keypresses)
+  // #define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+  #define RGB_DISABLE_WHEN_USB_SUSPENDED true  // turn off effects when suspended
+  // #define RGB_MATRIX_LED_PROCESS_LIMIT (DRIVER_LED_TOTAL + 4) / 5 // limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness)
+  // #define RGB_MATRIX_LED_FLUSH_LIMIT 16 // limits in milliseconds how frequently an animation will update the LEDs. 16 (16ms) is equivalent to limiting to 60fps (increases keyboard responsiveness)
+  #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150  // limits maximum brightness of LEDs to 200 out of 255. If not defined maximum brightness is set to 255
+  #define RGB_MATRIX_HUE_STEP 8
+  #define RGB_MATRIX_SAT_STEP 8
+  #define RGB_MATRIX_VAL_STEP 8
+  #define RGB_MATRIX_SPD_STEP 10
+
+//   #define DISABLE_RGB_MATRIX_ALPHAS_MODS
+//   #define DISABLE_RGB_MATRIX_GRADIENT_UP_DOWN
+//   #define DISABLE_RGB_MATRIX_BREATHING
+//   #define DISABLE_RGB_MATRIX_BAND_SAT
+//   #define DISABLE_RGB_MATRIX_BAND_VAL
+//   #define DISABLE_RGB_MATRIX_BAND_PINWHEEL_SAT
+//   #define DISABLE_RGB_MATRIX_BAND_PINWHEEL_VAL
+//   #define DISABLE_RGB_MATRIX_BAND_SPIRAL_SAT
+//   #define DISABLE_RGB_MATRIX_BAND_SPIRAL_VAL
+//   #define DISABLE_RGB_MATRIX_CYCLE_ALL
+//   #define DISABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+//   #define DISABLE_RGB_MATRIX_CYCLE_UP_DOWN
+//   #define DISABLE_RGB_MATRIX_CYCLE_OUT_IN
+//   #define DISABLE_RGB_MATRIX_CYCLE_OUT_IN_DUAL
+//   #define DISABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON
+//   #define DISABLE_RGB_MATRIX_CYCLE_PINWHEEL
+//   #define DISABLE_RGB_MATRIX_CYCLE_SPIRAL
+//   #define DISABLE_RGB_MATRIX_DUAL_BEACON
+//   #define DISABLE_RGB_MATRIX_RAINBOW_BEACON
+//   #define DISABLE_RGB_MATRIX_RAINBOW_PINWHEELS
+//   #define DISABLE_RGB_MATRIX_RAINDROPS
+//   #define DISABLE_RGB_MATRIX_JELLYBEAN_RAINDROPS
+
+  #define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+//   #define DISABLE_RGB_MATRIX_TYPING_HEATMAP
+//   #define DISABLE_RGB_MATRIX_DIGITAL_RAIN
+
+//   #define RGB_MATRIX_KEYPRESSES  // reacts to keypresses
+
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_SIMPLE
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_WIDE
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTIWIDE
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_CROSS
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTICROSS
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_NEXUS
+//   #define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTINEXUS
+
+//   #define DISABLE_RGB_MATRIX_SPLASH
+//   #define DISABLE_RGB_MATRIX_MULTISPLASH
+//   #define DISABLE_RGB_MATRIX_SOLID_SPLASH
+//   #define DISABLE_RGB_MATRIX_SOLID_MULTISPLASH
+
+  #define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_TYPING_HEATMAP
+#endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
diff --git a/keyboards/marksard/rhymestone/rev1/rev1.c b/keyboards/marksard/rhymestone/rev1/rev1.c
new file mode 100644
index 0000000000..a4dadd55cb
--- /dev/null
+++ b/keyboards/marksard/rhymestone/rev1/rev1.c
@@ -0,0 +1,108 @@
+/* Copyright 2020 marksard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rev1.h"
+
+// Optional override functions below.
+// You can leave any or all of these undefined.
+// These are only required if you want to perform custom actions.
+
+#ifdef RGB_MATRIX_ENABLE
+led_config_t g_led_config = { {
+    {  10,  11,  12,  13,   0 },
+    {   9,  18,  19,  14,   1 },
+    {   8,  17,  16,  15,   2 },
+    {   7,   6,   5,   4,   3 },
+    {  30,  31,  32,  33,  20 },
+    {  29,  38,  39,  34,  21 },
+    {  28,  37,  36,  35,  22 },
+    {  27,  26,  25,  24,  23 }
+}, {
+    { 100,   0 }, { 100,  21 }, { 100,  43 }, { 100,  64 },
+    {  75,  64 }, {  50,  64 }, {  25,  64 }, {   0,  64 },
+    {   0,  43 }, {   0,  21 }, {   0,   0 },
+    {  25,   0 }, {  50,   0 }, {  75,   0 },
+    {  75,  21 }, {  75,  43 },
+    {  50,  43 }, {  25,  43 },
+    {  25,  21 }, {  50,  21 },
+    { 125,   0 }, { 125,  21 }, { 125,  43 }, { 125,  64 },
+    { 150,  64 }, { 175,  64 }, { 200,  64 }, { 225,  64 },
+    { 225,  43 }, { 225,  21 }, { 225,   0 },
+    { 200,   0 }, { 175,   0 }, { 150,   0 },
+    { 150,  21 }, { 150,  43 },
+    { 175,  43 }, { 200,  43 },
+    { 200,  21 }, { 150,  21 }
+}, {
+    4, 4, 4, 1,
+    1, 1, 1, 1,
+    4, 4, 4, 4,
+    4, 4, 4, 4,
+    4, 4, 4, 4,
+    4, 4, 4, 1,
+    1, 1, 1, 1,
+    4, 4, 4, 4,
+    4, 4, 4, 4,
+    4, 4, 4, 4
+} };
+#endif
+
+__attribute__((weak))
+void matrix_init_user(void) {}
+
+void matrix_init_kb(void) {
+
+#ifdef RGB_MATRIX_ENABLE
+    // if (!is_keyboard_master()) {
+    //     g_led_config = (led_config_t){ {
+    //         {  30,  31,  32,  33,  20 },
+    //         {  29,  38,  39,  34,  21 },
+    //         {  28,  37,  36,  35,  22 },
+    //         {  27,  26,  25,  24,  23 },
+    //         {  10,  11,  12,  13,   0 },
+    //         {   9,  18,  19,  14,   1 },
+    //         {   8,  17,  16,  15,   2 },
+    //         {   7,   6,   5,   4,   3 }
+    //     }, {
+    //         { 125,   0 }, { 125,  21 }, { 125,  43 }, { 125,  64 },
+    //         { 150,  64 }, { 175,  64 }, { 200,  64 }, { 225,  64 },
+    //         { 225,  43 }, { 225,  21 }, { 225,   0 },
+    //         { 200,   0 }, { 175,   0 }, { 150,   0 },
+    //         { 150,  21 }, { 150,  43 },
+    //         { 175,  43 }, { 200,  43 },
+    //         { 200,  21 }, { 150,  21 },
+    //         { 100,   0 }, { 100,  21 }, { 100,  43 }, { 100,  64 },
+    //         {  75,  64 }, {  50,  64 }, {  25,  64 }, {   0,  64 },
+    //         {   0,  43 }, {   0,  21 }, {   0,   0 },
+    //         {  25,   0 }, {  50,   0 }, {  75,   0 },
+    //         {  75,  21 }, {  75,  43 },
+    //         {  50,  43 }, {  25,  43 },
+    //         {  25,  21 }, {  50,  21 }
+    //     }, {
+    //         4, 4, 4, 1,
+    //         1, 1, 1, 1,
+    //         4, 4, 4, 4,
+    //         4, 4, 4, 4,
+    //         4, 4, 4, 4,
+    //         4, 4, 4, 1,
+    //         1, 1, 1, 1,
+    //         4, 4, 4, 4,
+    //         4, 4, 4, 4,
+    //         4, 4, 4, 4
+    //     } };
+    // }
+#endif
+    matrix_init_user();
+}
diff --git a/keyboards/marksard/rhymestone/rev1/rev1.h b/keyboards/marksard/rhymestone/rev1/rev1.h
new file mode 100644
index 0000000000..855e288df3
--- /dev/null
+++ b/keyboards/marksard/rhymestone/rev1/rev1.h
@@ -0,0 +1,89 @@
+/* Copyright 2020 marksard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+
+#ifndef FLIP_HALF
+// Standard Keymap
+// (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
+#define LAYOUT_ortho_4x10( \
+  L00, L01, L02, L03, L04, R00, R01, R02, R03, R04, \
+  L10, L11, L12, L13, L14, R10, R11, R12, R13, R14, \
+  L20, L21, L22, L23, L24, R20, R21, R22, R23, R24, \
+  L30, L31, L32, L33, L34, R30, R31, R32, R33, R34  \
+  ) \
+  { \
+    { L00, L01, L02, L03, L04 }, \
+    { L10, L11, L12, L13, L14 }, \
+    { L20, L21, L22, L23, L24 }, \
+    { L30, L31, L32, L33, L34 }, \
+    { R04, R03, R02, R01, R00 }, \
+    { R14, R13, R12, R11, R10 }, \
+    { R24, R23, R22, R21, R20 }, \
+    { R34, R33, R32, R31, R30 }, \
+  }
+#else
+// Keymap with right side flipped
+// (TRRS jack on both halves are to the right)
+#define LAYOUT_ortho_4x10( \
+  L00, L01, L02, L03, L04, R00, R01, R02, R03, R04, \
+  L10, L11, L12, L13, L14, R10, R11, R12, R13, R14, \
+  L20, L21, L22, L23, L24, R20, R21, R22, R23, R24, \
+  L30, L31, L32, L33, L34, R30, R31, R32, R33, R34  \
+  ) \
+  { \
+    { L04, L03, L02, L01, L00 }, \
+    { L14, L13, L12, L11, L10 }, \
+    { L24, L23, L22, L21, L20 }, \
+    { L34, L33, L32, L31, L30 }, \
+    { R04, R03, R02, R01, R00 }, \
+    { R14, R13, R12, R11, R10 }, \
+    { R24, R23, R22, R21, R20 }, \
+    { R34, R33, R32, R31, R30 }, \
+  }
+#endif
+
+#ifdef USE_HASHTWENTY // The HashTwenty is Alpha version of The Rhymestone
+#undef LAYOUT_ortho_4x10
+// HashTwenty layout
+#define LAYOUT_ortho_4x10( \
+  L00, L01, L02, L03, L04, R00, R01, R02, R03, R04, \
+  L10, L11, L12, L13, L14, R10, R11, R12, R13, R14, \
+  L20, L21, L22, L23, L24, R20, R21, R22, R23, R24, \
+  L30, L31, L32, L33, L34, R30, R31, R32, R33, R34  \
+  ) \
+  { \
+    { L04, L03, L02, L01, L00 }, \
+    { L14, L13, L12, L11, L10 }, \
+    { L24, L23, L22, L21, L20 }, \
+    { L34, L33, L32, L31, L30 }, \
+    { R00, R01, R02, R03, R04 }, \
+    { R10, R11, R12, R13, R14 }, \
+    { R20, R21, R22, R23, R24 }, \
+    { R30, R31, R32, R33, R34 }, \
+  }
+#endif
diff --git a/keyboards/marksard/rhymestone/rev1/rules.mk b/keyboards/marksard/rhymestone/rev1/rules.mk
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/keyboards/marksard/rhymestone/rev1/rules.mk
diff --git a/keyboards/marksard/rhymestone/rules.mk b/keyboards/marksard/rhymestone/rules.mk
new file mode 100644
index 0000000000..1f58665efc
--- /dev/null
+++ b/keyboards/marksard/rhymestone/rules.mk
@@ -0,0 +1,27 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = no        # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+SPLIT_KEYBOARD = yes
+
+DEFAULT_FOLDER = marksard/rhymestone/rev1
+
+LAYOUTS = ortho_4x10