- Supports one panel for Raspberry PIs with 26 GPIO pins up to three panel chains for newer plus models and Raspberry Pi 2 that have 40 GPIO pins.
- Uses HCT245 to level shift signals from 3.3V to 5V and shield the Raspberry Pi GPIOs from overloading.
- Open source KiCAD PCB EDA format.
- (not very pretty layout, was just lazy and let the auto-router do it).
For multiple parallel boards to work, you have to uncomment
#DEFINES+=-DSUPPORT_MULTI_PARALLEL # remove the '#' in the begging
in lib/Makefile.
You can buy the board from OSH Park.
