qmk_firmware/keyboards/ploopyco/trackball_nano/readme.md

# 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).