Arduino Nano RP2040 Pin 17 (A3) Not Outputing PWM

Other Hardware Motors, Mechanics, Power and CNC
1

Although the specs show A3 (aka D17) as a PWM pin, I cannot get it to output PWM. I can output PWM with 16 , but not 17. I verified this with a logic analyzer.

This simple sketch demonstrates it.

What am I missing?

#include <Servo.h>
Servo myservo16, myservo17;
void setup() {
    myservo16.attach(16);
    myservo16.write(180);
    myservo17.attach(17);
    myservo17.write(180);
}

void loop() {

}

Any thoughts?

Thanks,
Sean

2

Servos do not use PWM signals.

3

If one can't find the reason, bypass the issue by using that other pin.

4

Servos determine their angle based on the received pulse width (PWM):

Arduino - Servo Motor | Arduino Tutorial (arduinogetstarted.com)

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5

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