Shared Projects by Wxll

This board is exactly the right size to replace the two AA batteries in an Apple Magic Trackpad. Connect the two power lines from a USB cable to the input jack. Connect a wire from the + terminal on the other end so that it juts out and touches the terminal inside the trackpad. Connect a stiff wire to the - terminal on the side and bend it so that it rides against the inside of the chamber. Use a cork to replace the original metal plug and connect the USB cable to a USB port.

The circuit is just a 3.3 volt (close enough) linear regulator with its related support caps.

No more AA batteries!

A header board which can be sticked into a breadboard and creates a fully working ATtiny(25/45/85) setup. Included are the (original) features:

• 6pin ISP connector for programming the ATtiny
• Reset button for resetting the ATtiny
• Every pin of the ATtiny is usable on the breadboard
• Using a resonator for the clock frequency
• The ATtiny is still a TH version and uses a DIP8 package for easy swap with another ATtiny.

Find my eagle files and BOM on github

This is a fork of the “through hole” version of the excellent work of djmason9. I’ve converted the board into a smaller SMD version 0.87x1.33 inches (22.15x33.86 mm). The original work of DJMason can be found: here