Datasheet

That's all there is to using the INA219 with CircuitPython!

Here's a full example to print the voltage and current every second. Save this as code.py on your board's filesystem

and check the output from the serial REPL.

Full Example Code

import time

from board import SCL, SDA

import busio

import adafruit_ina219

i2c_bus = busio.I2C(SCL, SDA)

ina219 = adafruit_ina219.INA219(i2c_bus)

print("ina219 test")

while True:

print("Bus Voltage: {} V".format(ina219.bus_voltage))

print("Shunt Voltage: {} mV".format(ina219.shunt_voltage / 1000))

print("Load Voltage: {} V".format(ina219.bus_voltage + ina219.shunt_voltage))

print("Current: {} mA".format(ina219.current))

print("")

time.sleep(2)