Reverse engineering a Grab vehicle sign

I didn't even know what Grab was when I bought this. It turns out that it may be food delivery company in Singapore, which makes it odd that it was listed on eBay UK. It was from a seller who also had various other vehicle signs like "TAXI".
It wasn't expensive, so it may have use as a novel illuminated ornament.

To find it on eBay, search for the keywords "grab LED sign".

The construction is pleasingly simple. Just a bare PCB with black resist and the logo as a white screenprint. The logo is formed by simple LED/resistor circuits like LED tape.

Current draw at various voltages is:-
10V - 80mA
11V - 130mA
12V - 173mA
13V - 225mA
14V - 278mA

The construction is reminiscent of some LED art panels.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.



#ElectronicsCreators