# EC 23U ![EC 23U PCB](https://i.imgur.com/G6QK1kU.png) Open source numpad Electrostatic Capacitive PCB. * Keyboard Maintainer: [cipulot](https://github.com/cipulot) * Hardware Supported: EC23U * Hardware Availability: [Github](https://github.com/Cipulot/EC23U) Make example for this keyboard (after setting up your build environment): make cipulot/ec_23u:default Flashing example for this keyboard: make cipulot/ec_23u: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 key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard * **Physical Boot0 pins**: Short the Boot0 pins on the back of the PCB while plugging in the keyboard * **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available