AVR fuse doctor, repair restore factory
Firmware is here https://d3s5r33r268y59.cloudfront.net...
or go to page
https://www.tindie.com/products/bobri...
and click on Datasheet or Source code
I am not author of this project.
You can also found this board here
https://www.ebay.com/itm/322825364159
and
https://www.ebay.com/itm/322981543210