Dual Supply for Raspberry Pi (A+/B+/2B/3B/3B+) Power from each Micro USB connector goes via a MOSFET "Ideal Diode" which is then connected directly to the Micro USB socket on the Raspberry Pi. Data pins are not connected from either Micro USB port (as...

Pi4, ClusterHAT, FanSHIM, etc. NOT included. Keep the 3.3v rail alive between reboots. When rebooting a Raspberry Pi 4 the 3.3 volt rail is reset which causes problems for some HATs. 3v3 Sustain fits in between a Raspberry Pi and a HAT/pHAT and...