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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!

A PCB jig generated by OpenSCAD Maybe it’s time ... Anyone whose gone through the frustration of trying to align a stencil by hand should be jumping at the opportunity to try this out on their ...