LEDserver

A simple RESTful HTTP API to control WS2801 LED stripes. Additional "effects" can be added by placing an effect_<name>.py file in the same folder (see effect_snake.py for an example)

Install

• sudo raspi-config -> Interface options -> SPI -> Enable
• sudo apt-get install python-pip -y
• sudo pip install adafruit-ws2801
• sudo pip install flask
• python led_server.py &

Usage

• GET on http://<ip>:5000/leds shows the state (e.g. color) of all LEDs
• GET on http://<ip>:5000/leds/<id> shows the state (e.g. color) of a specific LED
• POST on .../leds lets you change the color of all LEDs:
  • MimeType: application/json
  • Example body (sets LED#1 to red, LED#2 to green):

    [
       [ 255, 0, 0 ],
       [ 0, 255, 0 ]
    ]

• POST on .../leds/<id> lets you change the color of a specific LED:
  • MimeType: application/json
  • Example body (sets the LED to blue):

    [ 0, 0, 255 ]

• POST on .../effect/<name> triggers the effect effect_<name>.py:
  • MimeType: application/json
  • body depends on the effect, example for the snake effect (POST on .../effect/snake):

    {
         "color": [255, 0, 0],
         "delay": 0.1,
         "length": 5
    }