2 layers65 × 30.5 mm

Led pi board
jrowe88/RPi-LED-RGBMatrix-Hat
Hardware hat for Raspberry Pi to support RGB Matrix and LED strips
32 parts2
Open-source boards designed in KiCad by jrowe88 on GitHub, from 2 repositories. A board’s address here is its repository’s there.

jrowe88/RPi-LED-RGBMatrix-Hat
Hardware hat for Raspberry Pi to support RGB Matrix and LED strips

jrowe88/ecoport-bridge
CTA-2045 (EcoPort) bridge for a Rinnai REHP65 heat pump water heater