I'd like to build a simple circuit that does the following:
- controls a RGB LED (RPi 4 has 4 PWM outputs, so I could use 3 of them to control the LED)
- measures the current draw of each PWM output, with an ability to read these measurements using a program on RPi.
After some research, I stumbled upon INA219, which should allow me to measure the current. However, is it true that I'd need 3 of INA219 to be able to measure 3 PWM outputs? Is there any better alternative for my use case?
// Adding circuit diagram (simplified)
Instead of measuring 3 PWM outputs, I'd just measure the current of the diode. Is it OK?
