OpenBlink Demo M5

What is OpenBlink

OpenBlink is an open source project forked from ViXion Blink.

• Ruby, a highly productive lightweight language, can be used to develop embedded devices.
• Program rewriting and debugging console are completely wireless. (BluetoothLE)
• Rewriting time is less than 0.1 second and does not involve a microprocessor restart. (We call it "Blink".)

How to Get OpenBlink

To clone the repository and initialize the submodules, run the following commands:

$ git clone https://github.com/OpenBlink/openblink-demo-m5.git
$ pio run
$ pio run -e m5stack-stamps3 -t erase -t upload

Note: Both m5stack-stamps3 and m5stack-atom environments are configured in platformio.ini and can be used for device operations. The examples above use m5stack-stamps3, but you can use m5stack-atom by replacing m5stack-stamps3 with m5stack-atom in the commands.

Verified Hardware

The following hardware platforms have been tested with OpenBlink:

• M5 StampS3 (Espressif ESP32-S3FN8)
• M5 ATOM (Espressif ESP32)

Documentation

For more detailed documentation, please check the doc directory For AI-powered comprehensive documentation that helps you understand the codebase, visit DeepWiki.

mruby/c LED Control API

OpenBlink provides a simple API for controlling the onboard RGB LED through mruby/c.

Available Classes and Methods

LED Class

• LED.set([r, g, b]) - Sets the RGB LED color. Each value should be between 0-255.

Example: LED Blinking Code

Here's a simple example that makes the LED blink in different colors:

# RGB LED Blinking Example
while true do
  # Red
  LED.set([255, 0, 0])
  sleep 1

  # Green
  LED.set([0, 255, 0])
  sleep 1

  # Blue
  LED.set([0, 0, 255])
  sleep 1

end

This example demonstrates:

• Setting RGB LED colors using the LED.set method
• Using arrays to specify RGB values