I/O board which offers an impressive 30A switching capability. Ideally suited to switching of household appliances, industrial machinery or automotive applications.
gpio -x mcp23008:100:0x20 read 108
gpio -x mcp23008:100:0x20 mode 108 out
gpio -x mcp23008:100:0x20 write 108 1
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.