PC to MicroPython / CircuitPython via USB

About The Project

For a project I had to exchange data between my computer and a MicroPython microcontroller via USB connection. There are many examples for receiving data from the microcontroller, but only a few examples for sending data from the computer to the microcontroller.

For this reason I wrote a Python and Node.js program myself, which exchanges data with a Raspberry Pi Pico and lights up the microcontroller's built-in LED.

Thus, data can be exchanged between on the PC with Python or Node.js and on the microcontroller with MicroPython or CircuitPython.

MicroPython:

• Node.js <----> MicroPython
• Python <----> MicroPython

CircuitPython:

• Node.js <----> CircuitPython
• Python <----> CircuitPython

Prepear the Microcontroller

Load the script from the MicroPython folder to a microcontroller running MicroPython or if you want to use CircuitPython then load the script from the CircuitPython folder on a microcontroller with CircuitPython.

I have developed the script with a Raspberry Pi Pico. But it is also compatible for other MicroPython / CircuitPython compatible controllers. You may have to change the LED pin number.

Node.js <----> MicroPython/CircuitPython

Sending and receiving data between a Node.js application and a MicroPython or CircuitPython microcontroller.

Installation

1. Install Node.js
2. Clone the repo

   git clone https://github.com/chrissreichl/PC_to_MicroPython_via_USB.git

3. Install serialport package

   npm i serialport

4. Connect the microcontroller via USB to your computer.
5. Search the COM port number of the microcontroller in your device manager.
6. Adjust the COM port number in the main.js sample script if necessary.
7. Start the main.js script in your terminal

   node main.js

Now the LED of the microcontroller should light up for 2 seconds and you should see an output in the terminal. Congratulations, you have successfully sent commands via USB to the MicroPython/CircuitPython microcontroller!

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Python <----> MicroPython/CircuitPython

Sending and receiving data between a Python application and a MicroPython or CircuitPython microcontroller

Installation

1. Install Python
2. Clone the repo

   git clone https://github.com/chrissreichl/PC_to_MicroPython_via_USB.git

3. Install pyserial

   pip install pyserial

4. Connect the microcontroller via USB to your computer.
5. Search the COM port number of the microcontroller in your device manager.
6. Adjust the COM port number in the main.py sample script if necessary.
7. Start the main.py script in your terminal

   python main.py

Now the LED of the microcontroller should light up for 2 seconds and you should see an output in the terminal. Congratulations, you have successfully sent commands via USB to the MicroPython/CircuitPython microcontroller!

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License

Distributed under the MIT License. See LICENSE.txt for more information.

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