My Commentary and Technical help



From BobDavis321

Wednesday, May 27, 2026

HaleHound ESP32-DIV and CYD

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I have been trying to get a ESP32-DIV running with an ESP32-S3 processor as is required.  So far, after days of trying, all I have is a blan...
Tuesday, May 5, 2026

Building a DIY ESP32-Div

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I am building a ESP32-DIV to further my collection of Hacking devices.  I am building it on proto boards so I can change it later if needed....
Friday, April 3, 2026

Wiring Multiple Baseboard Heaters

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Recently I have some across several baseboard electric heaters that were wired together.  Usually they use the thermostat controlers that we...
Thursday, March 19, 2026

EcoQuest Fresh Air II air purifier repair 3

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 Once again I am fixing one of my two Fresh AIr by ecoQuest air filters.  This time it struggles to turn on.  I was taking longer and longer...
Monday, February 23, 2026

Simpler Arms for InMoov Robot

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I have built several humanoid servo based robots over the years as can be seen in this blog.  The InMoov Robot arms are very complicated to ...
Thursday, February 5, 2026

Rebuilding my InMoov Robot Head

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I am Rebuilding my InMoov Robot Head.  It was printed years ago on a plastic 3D printer.  I am now on my third metal framed 3D printer and t...
Tuesday, January 13, 2026

I am building my biggest LED wall yet.

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I am building my biggest LED wall yet. It should be 8 feet by 4 feet when done.  It consists of two panels each 4 feet by 4 feet in size.  E...
Wednesday, December 31, 2025

I bought a new 3D printer again this year a Creality Ender 3 V3 SE

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I bought a new 3D printer again this year. It is a "refurbished" Creality Ender 3 V3 SE.  Last year I bought  Ender V2 and upgrade...
Monday, December 15, 2025

CYD Cheap Yellow Display with Bruce firmware adding NRF24 CC1101 PN523 and IR

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Back in 2020 someone told me the covid19 tests were radioactive.  I pulled out my Geiger counter and proved that was not true.  Now I am hea...
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Friday, December 5, 2025

Raspberry Pi Wireless Internet router and Filter with RaspAP

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I have built a Raspberry Pi Wireless Internet router and Filter with RaspAP.  I tried a Raspberry Pi model 3 but out of three tries it only ...
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 ...
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