Based on the work of [sekigon-gonnoc] and with help of [Thach], they’ve made their TinyUSB library support bitbanging of USB over PIO, and successfully ported their test jig firmware to it!

Enhance your woodworking precision with a simple yet effective spline jig! In this guide, I'll show you how to build an easy-to-use jig for your sled, making it effortless to add splines to miter ...