The Power Monitoring HAT is a 3-channel Current/Voltage/Power monitoring add-on for your Raspberry Pi.
The HAT makes it easy to monitor the current, voltage or power usage of your device or circuit in each channel, and also monitor the voltage between both sides of the sampling resistor.
I2C or SMBus interfaces are used for lightweight communication.
Note: The Raspberry Pi is NOT included
Features
Raspberry Pi 40-pin GPIO header
Embedded 12-bit ADC converts analog signal into a digital signal
Support multiple successive converting operations within the 0-26V voltage measuring range
Sampling resistor onboard, 0.10 1% allows measuring bi-directional current up to 3.2A in the channel
Provides monitoring on 3 channels
Performs monitoring via the I2C/SMBus interface - low bandwidth
Can directly calculate electrical quantities - power, voltage and current
Measures output power value through an additional multiply register - helps the user obtain the right readings
12C control pins for connecting with other host boards