Ciro Santilli @cirosantilli 37

Any print() command ends up on the USB, and is shown on the computer via programs such as ampy get back.

However, you can also send data over actual UART.

We managed to get it working based on: timhanewich.medium.com/using-uart-between-a-raspberry-pi-pico-and-raspberry-pi-3b-raspbian-71095d1b259f with the help of a DSD TECH USB to TTL Serial Converter CP2102 just as shown at: stackoverflow.com/questions/16040128/hook-up-raspberry-pi-via-ethernet-to-laptop-without-router/39086537#39086537 for the RPI.

We connect Pin 0 (TX), Pin 1 (RX) and Pin 2 (GND) to the DSD TECH, and the USB to the Ubuntu 25.04 host laptop.

Then on the host laptop I run:and a counter shows up there just fine!

The first/only way Ciro could find was with ampy: stackoverflow.com/questions/74150782/how-to-run-a-micropython-host-script-file-on-the-raspbery-pi-pico-from-the-host/74150783#74150783 That just worked and it worked perfectly!

TODO: possible with rshell?

Install firmware: projects.raspberrypi.org/en/projects/getting-started-with-the-pico/3

Then there are two appraoches:

You can connect form an Ubuntu 22.04 host as:When in screen, you can Ctrl + C to kill main.py, and then execution stops and you are left in a Python shell. From there:but be aware of: Raspberry Pi Pico W freezes a few seconds after after screen disconnects from UART.

Other options: