Pico - Arduino Board

Other Hardware 3rd Party Boards
1

I am working on this board for a project at school.

It is a very simple question but maybe I am doing something wrong on my setup.
I would like to use 4 digital outputs and 3 analog inputs.

For the 4th digital, I am using pin 1 (RX). I dont use serial.print(). And I have nothing wired to pin 1 while uploading my sketch. Still, RX won't work as digital output, even after pinMode(1,OUTPUT).

Any suggestion what to try next?

Thanks in advance

2

The PICO does use an ATmega32u4 (same as Leonardo and Micro).
So Serial.print does not interfere with D0/D1 (RX/TX) but with the USB port (Serial USB).
To use the serial pins (D0/D1) you would use Serial1.print.

Please show your code.

3

Thanks for your answer

I am just migrating a working example from arduino UNO to PICO
in UNO, address for a stepper motor pins are 8,9

AccelStepper stepperX(AccelStepper::FULL2WIRE, 8, 9);

And I am just trying to use:

AccelStepper stepperX(AccelStepper::FULL2WIRE, 1, 2);

Where pin 1, is the RX.
For clarification: Same line above using pins '2, 3' or, '3, 4', works fine.

My ideal setup for 2 stepper motors would be something like:

AccelStepper stepperX(AccelStepper::FULL2WIRE, 1, 2);
AccelStepper stepperY(AccelStepper::FULL2WIRE, 3, 4);

uxomm:
To use the serial pins (D0/D1) you would use Serial1.print.

I am afraid it means I would have to Serial1.print a char related to whatever the library is sending to the motor pin?