Appliance HAT
0x20I/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.
Features
- 6 opto-isolated quick connect power relays
- Up to 16A @ 250V
- Based on the MCP23017 16-port GPIO expander
- Jumper selectable I2C address & GPIO voltage (3.3V / 5V)
- Can be used with 3.3V or 5V I2C host devices (eg, Arduino)
- Built-in user programmable ID EEPROM
Details
|
|
WiringPi Guide
Read
gpio -x mcp23017:100:0x20 read 108
Write
gpio -x mcp23017:100:0x20 mode 108 out
gpio -x mcp23017:100:0x20 write 108 1
- Operating voltage: - 1.8V to 5.5V
- Maximum current into VDD pin: 125mA
- Maximum current out of VSS pin: 150mA
Isolating the Relays
Removing the LINK jumper will disconnect 5V power to the relays. This allows you to power the relays from a dedicated supply if required.
GPIO Voltage
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.
GPIO Voltage
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.