# Ristretto   An Integrated, Column Stagger, 40% Keyboard with OLED and Rotary Encoder * Keyboard Maintainer: [Fruit](https://github.com/Blewis308) * Hardware Supported: Ristretto PCB, Atmega32u4 * Hardware Availability: Through Group Buy - May 2021 To enter the bootloader, press the button marked "SW1" on the bottom of the PCB. Make example for this keyboard (after setting up your build envionment): make ristretto: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).