Ploopy Trackball Nano
It’s a DIY, QMK Powered Trackball…Nano!
- Maintainer: PloopyCo
- Key contributors: Drashna Jael’re, Germ
- Hardware Supported: ATMega32u4 16MHz(5v)
- Hardware Availability: Store, GitHub
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:flashSee the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
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.
Customizing your Ploopy Nano Trackball
You can change the DPI/CPI or speed of the trackball by calling
adns_set_cpi at any time. Additionally, there is a
DPI_CONFIG macro that will cycle through an array of
options for the DPI. This is set to 375, 750, and 1375, but can be
changed. 750 is the default.
To configure/set your own array, there are two defines to use,
PLOOPY_DPI_OPTIONS to set the array, and
PLOOPY_DPI_DEFAULT.
#define PLOOPY_DPI_OPTIONS { 375, 750, 1375}
#define PLOOPY_DPI_DEFAULT 1The PLOOPY_DPI_OPTIONS array sets the values that you
want to be able to cycle through, and the order they are in. The
“default” define lets the firmware know which of these options is the
default and should be loaded by default.
The DPI_CONFIG macro will cycle through the values in
the array, each time you hit it. It stores this value in persistent
memory, so it will load it the next time the device powers up.
Fuse settings
When flashing the bootloader, use the following fuse settings:
| Fuse | Setting |
|---|---|
| Low | 0x5E |
| High | 0x99 |
| Extended | 0xC3 |