I'm doing a little project in order to learn to use Arduino.
In the attached image it's shown the circuit.
3 phototransistors with 3 colored filters let a RGB LED shine accordingly to che color of the light that hit the three sensors.
I have connected my probes to the pins 11 (RED), 10 (BLUE) and 9 (GREEN).
Those are the 3 traces displayed on the oscilloscope screen. I change light conditions sequentially (RED light then GREEN light then BLUE light) and I can see that the duty cycle of the...
Arduino PWM signal acquisition dubt
In the attached image it's shown the circuit.
3 phototransistors with 3 colored filters let a RGB LED shine accordingly to che color of the light that hit the three sensors.
I have connected my probes to the pins 11 (RED), 10 (BLUE) and 9 (GREEN).
Those are the 3 traces displayed on the oscilloscope screen. I change light conditions sequentially (RED light then GREEN light then BLUE light) and I can see that the duty cycle of the...
Arduino PWM signal acquisition dubt