I have made a few arduino tools to help in the past but I am having trouble with this one. The INA219 seems to not be compatible with the fiber optics circuit. I have the coding and the arduino working perfectly fine. I can measure any voltage inside the acceptable range from an external source. But when I connect it to the optics circuit the voltage that is 10.5v drops down to 8.3v. All voltages are correct in that this is also what I see with my multimeter.
Is there a possible way for me to measure this voltage without adding this interference? When using my multimeter there is no drop.
Why is there when using the INA219? I am using the Bus inputs but have also tried the load input as well. I have no interest in current, only voltage and have the code set to calibrate it to 16v 400mA
Code: Select all
ina219_1.setCalibration_16V_400mA()