My Commentary and Technical help



From BobDavis321

Tuesday, October 14, 2025

Doubling the size of a LED sign

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 I have two 40" by 16" LED signs. Each one has five by two of the 32 by 32 P6 LED arrays. I thought they were identical signs and ...
Friday, October 10, 2025

Make your own LED sign

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I have made my own LED sign from scratch and have also made one by adding parts of two signs together to make a bigger one.  I wanted to use...
Tuesday, September 23, 2025

I am building a new deck.

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 I am building a new deck with 2x6" and Trex flooring.  The handrails are Veranda available at Home Depot. This picture is the framing ...
Monday, September 8, 2025

Build Your Own LED Wall

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I have been building my own LED walls.  So far I have two of them, one uses P4 indoor Panels the other uses P5 indoor panels.   All of the p...
Thursday, September 4, 2025

Mini-Split Line Cover Problems

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I have now installed three mini-split heat pumps.  I would only recommend the MrCool ones as the flared line sets seem to always leak. One o...
Friday, August 15, 2025

I finally got a Zero Turn Mower a Z Force S 46

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I bought my first Zero Turn Mower, its a Cub Cadet Z Force S 46 for $350.  Boy was I in for an education!  The mower only had power to one r...
Wednesday, May 21, 2025

How to repair LED matrix panels.

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A few years ago I had two P3 LED panels with missing LED's in the corners due to being beaten up in shipping.  Recently it happened agai...
Wednesday, May 7, 2025

Signs, Signs, Everywhere Signs!

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I have just finished my latest book "LED Sign Projects".  I am not happy with the cover.  Besides being off center its kind of red...
Monday, May 5, 2025

Using LED strips to light up a Street sign instead of fluorescent bulbs

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A couple of years ago I replaced the non-working five foot fluorescent bulbs in our church street sign with LED's.  However the horizont...
Monday, March 31, 2025

We had to dig up the church well

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The pump quit in the church well so we had to dig it up.  When we tried to pull it we could see somthing on the pitless adapter.  We tapped ...

Waveshare Zero to Pi3 Review

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I recently purchased a Waveshare Zero to Pi3 adapter.  I had a couple of Pi zero's laying around not being used because I had to look up...
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