Name		Name	Last commit message	Last commit date
parent directory ..
README.md		README.md
active-rpi-hub75-adapter.kicad_pcb		active-rpi-hub75-adapter.kicad_pcb
active-rpi-hub75-adapter.pro		active-rpi-hub75-adapter.pro
active-rpi-hub75-adapter.sch		active-rpi-hub75-adapter.sch

README.md

Adapter PCB to support up to 2 panels

Supports one panel for Raspberry PIs with 26 GPIO pins and two panels 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.
This supports two panels and provides convenient breakouts for I²C and the serial interface.
Open source KiCAD PCB EDA format.
If you are interested in connecting three RGB panels, check out the Active-3 board (it won't support the serial intefaces though).

For multiple parallel boards to work and using the I2C and serial interface you have to uncomment

 #DEFINES+=-DSUPPORT_MULTI_PARALLEL   # remove the '#' in the begging