MarvelLight led strip controller

[espruino-discuss3]

Posted at 2025-01-10 by @enaon

I am not sure where to post this, it is about an interesting rgb led controller, that is controller by advertising manufacturer data. It is interesting because it is programmable, one can set patterns and store them as profiles, and a lot of them can be controlled at the same time, since no connection is needed.

if one happens to find such a controller, this is the code I use to control it from espruino.

if (!global.ledBT){
global.ledBT={
	busy:0,
	tid:0,
    cnt:1,
    val:0,
	run:0,
	solid:0,
	patern:0,
    preset:0,
	do:function(c){
        //print("in",c);
		if (this.busy) {print(1);ledBT.busy=0;return false;}
        this.busy=1;
        if (ledBT.cmd(c)) NRF.setAdvertising({},{manufacturerData:[ledBT.cmd(c)]});
        else {ledBT.busy=0;return;}
        if (ledBT.tid) clearTimeout(ledBT.tid);
        this.tid=setTimeout((c)=>{
            if (!ledBT.val) ledBT.val=c;
			ledBT.tid=0;
            //print("check",ledBT.val+ledBT.cnt);
            ledBT.busy=0;  
            if (ledBT.cmd(ledBT.val+ledBT.cnt)) {ledBT.do(ledBT.val+ledBT.cnt); ledBT.cnt++;}
            else { ledBT.tid=setTimeout(()=>{ledBT.tid=0;NRF.setAdvertising({},{manufacturerData:[]});},2000); ledBT.val=0;ledBT.cnt=1;}
		},50,c);
	},
	cmd:function(o){
		if (o=="bri100") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 147, 229, 29, 255, 184, 88, 241, 145, 188]).buffer;
		else if (o=="bri101") return   new Uint8Array([109, 182, 67, 213, 174, 14, 5, 147, 229, 29, 255, 184, 88, 241, 146, 189]).buffer;
		else if (o=="bri50") return  new Uint8Array(  [109, 182, 67, 213, 174, 14, 5, 147, 229, 29, 255, 83, 91, 241, 254, 182]).buffer;
		else if (o=="bri05") return  new Uint8Array(  [109, 182, 67, 213, 174, 14, 5, 147, 229, 29, 255, 83, 91, 241, 254, 182]).buffer;

		else if (o=="on") {ledBT.run=1;return   new Uint8Array([109, 182, 67, 213, 174, 14, 5, 147, 228, 28, 254, 184, 88, 253, 41, 101]).buffer;}
		else if (o=="off") {ledBT.run=0;return   new Uint8Array([109, 182, 67, 213, 174, 14, 5, 147, 228, 28, 254, 184, 91, 253, 65, 79]).buffer;}

		else if (o=="whiteOnce") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 146, 229, 29, 254, 185, 88, 249, 107, 233]).buffer;
		else if (o=="blue") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 226, 254, 71, 90, 240, 156, 229]).buffer;
		else if (o=="purple") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 226, 1, 184, 89, 240, 213, 204]).buffer;
		else if (o=="white") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 226, 1, 71, 88, 240, 254, 19]).buffer;
											
		else if (o=="yellow") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 29, 1, 71, 88, 240, 164, 230]).buffer ;
		else if (o=="green") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 29, 254, 71, 91, 240, 30, 9]).buffer;
		else if (o=="red") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 29, 1, 184, 91, 240, 63, 10]).buffer;

		else if (o=="PO1") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 212, 228, 29, 3, 79, 88, 251, 208, 247]).buffer;
		else if (o=="PO11") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 109, 26, 226, 13, 153, 91, 248, 130, 5]).buffer;
		else if (o=="PO12") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 4, 229, 29, 255, 188, 90, 254, 123, 224]).buffer;

		else if (o=="PO2") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 214, 228, 63, 1, 239, 89, 251, 11, 153]).buffer;
		else if (o=="PO21") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 109, 26, 226, 1, 248, 88, 248, 79, 231]).buffer;
		else if (o=="PO22") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 86, 229, 29, 254, 188, 91, 254, 108, 160]).buffer;

		else if (o=="PO3") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 215, 231, 16, 254, 71, 88, 251, 209, 21]).buffer;
		else if (o=="PO31") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 109, 26, 226, 254, 184, 91, 248, 131, 14]).buffer;
		else if (o=="PO32") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 146, 229, 9, 4, 187, 90, 254, 9, 41]).buffer;

		else if (o=="PO4") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 214, 228, 63, 1, 239, 90, 251, 99, 179]).buffer;
		else if (o=="PO41") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 109, 26, 226, 1, 248, 89, 248, 151, 254]).buffer;
		else if (o=="PO42") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 86, 229, 29, 254, 188, 88, 254, 4, 138]).buffer;
		
		else if (o=="RWB") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 215, 228, 29, 1, 184, 90, 251, 73, 85]).buffer;
		else if (o=="RWB1") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 109, 26, 226, 4, 184, 89, 248, 182, 150]).buffer;
		else if (o=="RWB2") return new Uint8Array([109, 182, 67, 213, 174, 14, 5, 246, 229, 23, 131, 188, 88, 254, 248, 242]).buffer;
		
		else if (o=="RWG") return  new Uint8Array([109, 182, 67, 213, 174, 14, 5, 215, 228, 29, 1, 184, 89, 251, 33, 127]).buff

---

Attachments:

• unnamed.jpg

[gfwilliams]

Posted at 2025-01-10 by @gfwilliams

That's great, thanks! Using manufacturer data is an odd one, but I believe when I was looking at controlling LEGO clone devices with https://www.espruino.com/LEGO+Power+Functions+Clone I found it done as well - not sure if maybe it's something the Chinese manufacturers tend to do a bit more for some reason.

If you wanted, it might be a cool thing to add a module for, or just to add to the end of https://www.espruino.com/BLE+Lightbulbs