picoLeds

Description

System of WS2812B leds controled by Raspberry Pico W using API server hosted on the Pico device.

Used technology

Languages:

• MicroPython

Leds library:

• blaz-r pi_pico_neopixel

Download

You can download the master branch with code.

How to use

1. Rename config_template.json to config.json and fill all the data
   • endpointUrl points to the endpoint where Pico W will sync his IP address. Comment if not needed. My that kind of endpoint example is located below.
   • pin is the number of Pico W output pin where board communicate with led strip.
2. Upload the code to the Pico W device.
3. Connect led strip with the Pico W and start the system!

API Documentation

Here's the endpoints that system handles at the moment.

API response will be 200 OK if the call will be accurate and realizable. Otherwise the response will be 400 Bad request with error message.

Color

GET /color/hex

curl --location 'http://192.168.1.2/color/ff0000'

Changes strip color to desired hex. This example will change the color to red.

Brightness

GET /brightness/0-255

curl --location 'http://192.168.1.2/color/50'

Changes brightness of the led strip. Scale of the brightness if 0-255.

Turning on/off

GET /turn/on or off

curl --location 'http://192.168.1.2/turn/off'

Changes the strip color to black so practically it will turn the lights off. To turn it on just change the off to on!

Pico W IP endpoint example

<?php

$THE_ID = "RYBNICKALEDS";
$FILENAME = "leds.json";

if(isset($_GET["id"]) && isset($_GET["ip"]) && $_GET["id"] == $THE_ID) {
    $obj = array();

    $obj["id"] = $_GET["id"];
    $obj["ip"] = $_GET["ip"];
    $obj["timestamp"] = date("Y-m-d H:i:s");

    $json = json_encode($obj, JSON_PRETTY_PRINT);
    $fp = fopen($FILENAME, 'w');
    fwrite($fp, $json);
    fclose($fp);

    unset($_GET["id"]);
    unset($_GET["ip"]);

    echo "OK";
}

Thank you!

Thank you for peeking at my project!

If you're interested check out my other stuff here