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https://github.com/zyltr/asynchronous-neopixel
A MicroPython project demonstrating how to control NeoPixel LEDs asynchronously
https://github.com/zyltr/asynchronous-neopixel
adafruit-neopixel asyncio micropython neopixel pico raspberry-pi-pico rgb rgbw
Last synced: 3 months ago
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A MicroPython project demonstrating how to control NeoPixel LEDs asynchronously
- Host: GitHub
- URL: https://github.com/zyltr/asynchronous-neopixel
- Owner: zyltr
- License: mit
- Created: 2024-09-12T02:55:28.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2024-09-14T02:40:13.000Z (3 months ago)
- Last Synced: 2024-09-30T07:07:06.078Z (3 months ago)
- Topics: adafruit-neopixel, asyncio, micropython, neopixel, pico, raspberry-pi-pico, rgb, rgbw
- Language: Python
- Homepage:
- Size: 10.5 MB
- Stars: 0
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Awesome Lists containing this project
README
# Pi Pico Asynchronous NeoPixels
## Overview
This demonstration shows how to use a Raspberry Pi Pico to control various
aspects of a bar, ring, or strip of NeoPixels using common controls such as buttons.
Specifically, how to adjust the brightness, timing, and effect of the connected NeoPixels.
### Resources
The following resources were instrumental to this project
[Adafruit NeoPixel Überguide](https://learn.adafruit.com/adafruit-neopixel-uberguide/python-circuitpython)
[Micropython Asyncio](https://github.com/peterhinch/micropython-async/blob/master/v3/docs/TUTORIAL.md)
## Prerequisites
Before you begin, ensure you have these, or similar parts, nearby:
- [Raspberry Pi Pico](https://www.digikey.com/en/products/detail/raspberry-pi/SC0915/13624793)
- [Adafruit NeoPixels Stick](https://www.digikey.com/en/products/detail/adafruit-industries-llc/1426/5395892)
- [Adafruit Colorful Buttons](https://www.digikey.com/en/products/detail/adafruit-industries-llc/1010/7244937)
***Pi Pico W can also be used***
***Any Adafruit NeoPixel component should be usable. I used a stick for simplicity***
## Setup
### Preparing Pico
Install version **Micropython 1.23.0**, or later, onto the device. This example uses methods of the ***deque*** class
that may not exist in earlier versions.
[Installing Micropython](https://www.raspberrypi.com/documentation/microcontrollers/micropython.html)
### Connecting Components
Connect everything as above in the *Fritzing* diagram, if using linked components. You may need to solder header pins
to the NeoPixels to connect to a breadboard. If this is not possible, then alligator cables
should suffice.
### Modifying Source Code
If you choose to use NeoPixel's that are `RGBW`, instead of `RGB`, then one small change in the source
code is required for optimal operation
Inside `hardware.py`, change the value of the `__RGB` variable in the `Output` class to `False`
```python
class Output:
___RGB = False # Only False if using RGBW NeoPixels
```
### Uploading Source Code
Upload all the required files to Pi Pico's root directory.
`lib/`
`hardware.py`
`lighting.py`
`main.py`
This can be easily accomplished using the application `Thonny`, or other tools such as
`mpremote` or `rshell`.
*The `lib/` directory is especially important since it contains modules used by the demonstration.*
### REPL
If everything went well, interacting with the device should produce similar output into the terminal:
A live demonstration can be seen below:
[](./assets/demo.mp4)
## Troubleshooting