# Ploopy Trackball Nano ![Ploopyco Trackball Nano](https://ploopy.co/wp-content/uploads/2021/06/2.jpg) It's a DIY, QMK Powered Trackball...Nano! * Maintainer: [PloopyCo](https://github.com/ploopyco) * Key contributors: [Drashna Jael're](https://github.com/drashna/), [Germ](https://github.com/germ/) * Hardware Supported: ATMega32u4 16MHz(5v) * Hardware Availability: [Store](https://ploopy.co/nano-trackball), [GitHub](https://github.com/ploopyco/nano-trackball) Make example for this trackball (after setting up your build environment): make ploopyco/trackball_nano/rev1_001:default:flash make ploopyco/trackball_nano/rev1_001:via: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). ## Hardware Reset Button The Ploopy Nano has a handy bootloader reset mechanism: two via pins on the board, designated by the reference designator `MCU.J.X BOOTLOADER`. If you stick an uninsulated paperclip or a pair of metal tweezers into both holes and plug in the Nano, it will start in bootloader mode. ## Revisions Occasionally, new revisions of the PCB will be released. Every board comes with a designator that looks something like `R1.001`. Match the firmware that you flash onto the board with the designator on the board. ## Fuse settings When flashing the bootloader, use the following fuse settings: | Fuse | Setting | |----------|-------------| | Low | `0x5E` | | High | `0x99` | | Extended | `0xC3` | # Customizing your PloopyCo Trackball Nano You can find customziation options [here](../readme.md).