piso-shift-register
There are 2 repositories under piso-shift-register topic.
pstolarz/librasp
Raspberry Pi library for GPIO, 1-Wire, SPI, System Time Counter (STC) access. There have been provided APIs for handling various popular devices.
Daedalus-op/PISO_Register_PCB
A repo documenting the creation of a PISO register in Kicad 8.0