Building a cheap Wifi LED controller

This is a logical follow-up on a previous post about the Conrad MS-35 RGB LED controller. I’m using this controller for 3 warm white LED strips for a few weeks now and it’s working perfectly – everybody is very happy with how it worked out. So it didn’t take long before I got the question if it was possible to install even more LED strips – in the living-room this time. That should be doable, however, the ideal location for the LED controller is in a corner of the living-room where it’s hard to get Ethernet.. ok, lets try something different. I’ve already got 3 Chromoflex controllers connected to Zigbee modules in the kitchen and garage, I’ve got an MS-35 connected to Ethernet in the hallway – lets try Wifi this time! Don’t wanna do mass-production, every piece of hardware is unique over here!

So I’ve started buying the parts I need, which are:

  • Conrad MS-35 LED controller, EUR 20,89;
  • TTL to Wifi converter, EUR 21;
  • Hammond enclosure, EUR 6,83;
  • IPEX/SMA antenna adapter, EUR 4,99;
  • 2×5, 2mm pitch female connector, EUR 0,90;
  • Standard Wifi antenna, from an old Wifi access point;
  • 3.3V voltage regulator, EUR 1,10;
  • 12V power adapter, found in the garage.


Total cost: EUR 55,71 (and some spare time). And this could have been even less than 50 Euro, if Conrad hadn’t suddenly raised the price of the MS-35 with almost 40%! Despite that, a Wifi RGB LED controller for less than 55 Euro…try to beat that if you can! 😉

I decided not to use the antenna that comes with the TTL to Wifi converter, cause it’s a bit hard  to mount; I would probably have to drill a large hole in the enclosure and use a lot of glue to make the construction robust enough, so I decided to buy an additional IPEX/SMA adapter for that. This will give the end result a more “pro” look. The 2mm pitch connector isn’t essential either, but this connector will fit on the headers of the TTL to Wifi converter (I think) so that I don’t have to solder any wires directly onto the converter PCB headers – I don’t like doing that, a connector just looks and feels better.

And the enclosure I chose has nice ‘ribs’ on the inside so I can put a piece of perfboard between those ribs and solder the voltage regulator on the perfboard and mount the Wifi module to it.

Ok, I think I’ve got all things covered; I ordered the parts I didn’t have yet and they will be here real soon. Let’s see how this LED controller turns out!

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One Response to Building a cheap Wifi LED controller

  1. Pingback: Testing the Wifi LED controller - Digits Domotica Blog

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