Fence Pixels

  Operation Construction Issues

In 2013 I put up the first fence pixels. Unfortunately, it turned out I had received a bad batch. They were extremely unreliable and I had to replace several dead pixels every week. So in April 2014 I torn them all down and pitched them in the trash.

In November 2014 I put new strings into operation with the big difference being 10cm spacing where as in 2013 the spacing was 15cm increasing the total pixels to 665 instead of the previous 440.

Fence pixels 2014 - 665 individually computer controlled LEDs over 200 feet.


Fence pixels 2014 - Perimeter lighting.


Fence pixels 2013 - 440 individually computer controlled LEDs over 200 feet.

Smoothly cycling through the color spectrum. The meteor takes a fast flight around the yard.

2013 Videos:

 

The strings have been cut to lengths that fit between the fence posts and the stock connectors have been replaced with much smaller JST JWPF waterproof connectors which you can see in use here.

The 12 volt pixel power is delivered by 25 amp buck converters mounted on each corner post which are fed from a 35 volt 14 awg lead that runs along the rail next to the pixels.

Buck converters are located on the corner fence posts

The pixel controllers are model ECG-P2 made by Joshua Systems. The 5v digital signal the controller produces will not travel very far, so it is converted into a differential signal using the model ECG-PPD-D pixel extender, also by Joshua Systems.

The 35 volt/16 amp power is supplied by a model SE-600-36 made by MeanWell.

Fence control is located in the basement



12 volt / 25 amp buck converter

In April 2014 I torn down the original fence pixels. They were extremely unreliable and I had to replace several dead pixels every week.
The signs were there from day one when six of the eight strings I purchased had dead pixels right out of the box.

I contacted Ray Wu in May and he was aware that his "Technicolor Pixels" had issues but he assured me the problems had been corrected
and the new version would be reliable. So I took a chance and ordered replacement strings, which I tested when they arrived, and there
were no dead pixels.

Now when I get a dead pixel I am replacing that segment of pixels between the posts with pixels that have been "sealed" with Loctite 406,
which is applied around the LED hat and the wire entry points.


Exploded buck converter on 14 December 2017


Fence pixel melted down on 30 March 2015


Puppy chewing damage to connector