Review on π Latest Raspberry Pi 8-Channel Relay Expansion Board with 5V Power Relay Module for Raspberry Pi 4 3 2 Model B+ B Jetson Nano - XYSGStudy by Rick Rownd
Works well, good mounting solution
No documentation, but GPIO to relay mapping is set on the board on the bottom of the yellow jumpers. This is misleading as they are marked as P5, P6, P13, P16, P19, P20, P21, P26 but they are actually GPIO, GPIO5, GPIO6, GPIO13 etc numbers not PI pin numbers.
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