My Commentary and Technical help



From BobDavis321

Wednesday, February 21, 2024

Peavey Combo 115 repairs

›
My brother bought me a Peaver Combo 115 for repair.  They used controls with plastic shafts that broke off. They upgraded the design to use ...
Wednesday, February 7, 2024

WARNING - 5630 LED strip lights are burning out!

›
I have many 5630 LED strip lights that have burned out after only 2 months of use.  Here is what they look like now that they have been repl...
Monday, February 5, 2024

Arduino Controlled Colloidal Silver Maker with Nokia 5110

›
I saw that someone had copied my colloidal silver maker design and their design was trending at number one when you search for Arduino Collo...
1 comment:
Saturday, February 3, 2024

The Capacitor Disaster is back!

›
 About 20 years ago the market was flooded with faulty capacitors.  This is happening once again.  Three times within one week I had to fix ...
Tuesday, January 16, 2024

EcoQuest Fresh Air II air purifier repair 2

›
I found myself once again doing some EcoQuest Fresh Air II air purifier repairs.  One of ours quit making ozone.  I opened it up but could n...
1 comment:
Friday, December 29, 2023

Blowby before+after treating with CRC and Seafoam.

›
I seem to have found a fix for my Equinox burning so much oil.  I did a video showing the b low-by before and after treating with CRC GDI In...
Wednesday, December 20, 2023

Using LED's to replace the flourescent bulbs in a street sign

›
UPDATE: the 5630 LED's are burning out after only two months of operation! I have been using LED strips to replace the flourescent bulbs...

Wireless Bridge CPE for a Link to another building

›
 I just installed a wireless bridge for a link to another building.  The distance was about 3/4 of a mile.  The results were excellent!  I h...
Thursday, December 14, 2023

Another amplifer rebuild with a TDA7394 Power Amplifier board

›
Once again I am rebuilding another amplifer this time with a TDA7394 Power Amplifier board.  I picked up theis fried amplifier at a Hmfest f...
Tuesday, November 28, 2023

Converting RGB controller to ESP8266 WLED Ws2812 Controller.

›
I am converting an old RGB controller to an ESP8266 WLED WS2812 Controller.  I removed the power transistors and cut the runs for the pull u...
Wednesday, November 1, 2023

MLX90640 and ESP32 Thermal Imaging Camera with 2.8" TFT SPI

›
I decided to update my old thermal imaging camera.  Back in 2020 I had built a AMG8833 based camera.  Its resolution was only 8x8 pixels.  T...
Thursday, October 12, 2023

64 x 72 LED wall with ESP32 and WS2812B

›
I have been making LED signs for many years.  This blog testifies to that.  However I thought I would take my latest design to the next leve...
‹
›
Home
View web version

About Me

My photo
Bob Davis
View my complete profile
Powered by Blogger.