Hi, im have INA219 sensor for measure current voltage from battery 3s 11.1v
Below results:
Bus Voltage: 0.256 V
Bus Current: 412.439 mA
Power: 249.756 mW
Shunt voltage: 40.000 mV
The question is if I connect it well, plus batteries with vin + minus with vin- ?
Thanks for help !
prem111:
The question is if I connect it well, plus batteries with vin + minus with vin- ?
Batt+ and load+ to the screw terminals, and batt- to INA219 ground.
Post a diagram/picture if you're not sure.
Leo..
Diagram attached. is that correct
BEC is connected right.
Best to connect INA ground directly to an Arduino ground pin.
So four wires to connect between INA219 and Arduino.
5volt, ground, SCL, SDA.
Battery+, via the INA Vin screw terminals to load+.
Load- returns directly to battery-.
Leo..
That's what I originally had, ina gnd -> gnd arduino, battery+ -> ina vin+ (screw) battery- -> vin- (screw)
Result:
Bus Voltage: 0.256 V
Bus Current: 412.439 mA
Power: 249.756 mW
Shunt voltage: 40.000 mV
What is the load that you are measuring the current of?
That's what I originally had, ina gnd -> gnd arduino, battery+ -> ina vin+ (screw) battery- -> vin- (screw)
You have probably burned out the INA219 shunt resistor. VIN- should go to BEC+.
VIN- to BEC+ IN or OUT ?
prem111:
VIN- to BEC+ IN or OUT ?
In. Batt+ to INA VIN+ INA VIN- to BEC IN+ BEC OUT+ to Arduino Vcc, Arduino GND to BEC OUT-, BEC IN- to INA GND to Batt-. May need a separate wire from Arduino GND to INA GND.
I think I actually burned something, now after exactly such connection there is no power at BEC.