I/O board with quick connect power relays. Designed for switching high power loads such as appliances. Ideal for automation or industrial control applications.
Does not require any screw terminals or PCB wire connections. Instead it uses quick connect power relays with integrated spade terminals, meaning we have more space for relays.
gpio -x mcp23017:100:0x20 read 108
gpio -x mcp23017:100:0x20 mode 108 out
gpio -x mcp23017:100:0x20 write 108 1
Removing the LINK jumper will disconnect 5V power to the relays. This allows you to power the relays from a dedicated supply if required.
The 3V3 Jumper is used to drive the GPIO expander voltage to 3V3.
To use with Arduino or any other 5V device the 3V3 jumper must be moved to 5V.
The 5V Jumper is used to drive the GPIO expander voltage to 5V.
Select this jumper to use with Arduino or any other 5V device and use the SDA & SDL breakout pins for I2C communication.