# Duet Switch Tester ![Cover image](https://i.imgur.com/sFuHJbLh.png) A switch tester intended for event/storefront use * Keyboard Maintainer: [ai03](https://github.com/ai03-2725) * Hardware Supported: The [Duet PCB](https://github.com/ai03-2725/duet-switch-tester/tree/main/Duet-MainPCB), powered by the RP2040 * Hardware Availability: [Open-source](https://github.com/ai03-2725/duet-switch-tester) Make example for this keyboard (after setting up your build environment): make ai03/duet:default Flashing example for this keyboard: make ai03/duet: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 reset button**: Press the reset button on the back of the PCB while holding the Bootmode switch * **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available