Mouse Jiggler (with Digispark ATTiny85)

Simple mouse jiggler created using a Digispark ATTiny85:

By default, simply moves the mouse 1 pixel, in sequence, "up", "down", "left" and "right".
You may need an additional USB "male/female" connector, between the device and your Digispark, to prevent false contacts.

Notes for my Arch installation

1. Open Arduino IDE: go to File -> Preferences -> set "Additional Boards Manager URLs" to "http://digistump.com/package_digistump_index.json"
2. Go to Tools ->Board -> Boards Manager... -> search and install "Digistump AVR Boards"
3. Download latest Micronucleus release for your OS from "https://github.com/micronucleus/micronucleus/releases"
4. Put downloaded executable files (replace if existing) in your Micronucleus directory (in my case $HOME/.arduino15/packages/digistump/tools/micronucleus/2.0a4)
5. Add udev rules for your user:

echo "SUBSYSTEM==\"usb\", MODE=\"0660\", GROUP=\"$(id -gn)\"" | sudo tee /etc/udev/rules.d/00-usb-permissions.rules
sudo udevadm control --reload-rules