- Supports 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).
- BOM:
- 4x 74HCT245 or 74AHCT245 in 20-SOIC, 7.5mm package.
- 4x 100nF ceramic capacitor (0805 package)
- 1x 10kOhm resistor (0805 package)
- 3x 16pin IDC (=2x8) male receptible to connect the panels.
- 1x 40pin female connector to connect to the RPi.
- The FAB files are provided as active3-rpi-hub75-adapter-fab.zip
The board is also shared on OSH Park (not affiliated).
