Add `tzarc/ghoul`. (#18562)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

1 files changed, 29 insertions, 0 deletions

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+# Ghoul
+
+![Ghoul](https://i.imgur.com/T8wp7cEh.jpg)
+
+Planck-like development board for QMK, using SparkFun MicroMod for hot-swap MCU capability.
+
+* Keyboard Maintainer: [tzarc](https://github.com/tzarc)
+* Hardware Supported: Ghoul rev1 PCB + MicroMod STM32, MicroMod RP2040
+* Hardware Availability: [Open-source](https://github.com/tzarc/ghoul)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make tzarc/ghoul/rev1/stm32:default
+    make tzarc/ghoul/rev1/rp2040:default
+
+Flashing example for this keyboard:
+
+    make tzarc/ghoul/rev1/stm32:default:flash
+    make tzarc/ghoul/rev1/rp2040:default:flash
+
+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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the top-left key (usually Escape) and plug in the keyboard
+* **Physical reset button**: Either press all 5 left-most keys on the bottom row, or hold `BOOT` and press `RESET`
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available