General electronics projects. Reverse engineering of industrial electronics. Smaller projects that you can make at home or for school.
Old electronics and expensive RF parts often contain a large amount of gold and other precious materials. I have seen a lot of Computer Gold Scrap recovery videos on youtube. I assume that you have seen the same. Some are handling everything correct, but truth is, with the dangerous and hazardous nature of the dust […]
Computer Gold Scrap Money WITHOUT Chemicals or Mechanical Processing (Part 1 of 2) Read More »
Comparison of my DIY Arduino Uno DHT22 temperature and humidity IOT sensor with ESP8266 WiFi module. Up against the commercial Airthings View Plus sensor hub which can do radon, temperature, humidity, pressure, VOC, PM and CO2. This video is also a complete walkthrough of how I built the Arduino solution and how to setup the
Home Automation: DIY Arduino vs. Airthings View Plus Read More »
A guide on how to make the, ACBEL FSA021 IBM 39Y7228, server power supply run outside of its server enclosure. You might also be interested in reading about the Server PSU Hack – HP DPS-800GB A, 12VDC 1000W or the Server PSU Hack – EMC2 API4SG10 12VDC 300W From a Dell PowerEdge M1000E. ACBEL FSA021
Server PSU Hack – ACBEL FSA021 IBM 39Y7228, 12VDC 38A 460W Read More »
Teardown, cleaning and test of a Fluke Helios Plus 2287A Data Acquisition Frontend and 2181A Extender. The Frontend and extender features two Fluke 2280A-161 High Performance A/D Converter 2280A161 cards and nine 20-channel RTD/Resistance Scanner modules, for a total of 180 inputs in this setup with a Frontend and Extender. Discussion of this equipment can
Fluke Helios Plus 2287A, 1500 I/O Frontend, Teardown and Test Read More »
The previous owner of this Danish vintage oscilloscope had tried to plug it in and the only result was smoke! I was asked if I wanted it for repair or it would be thrown out. The Radiometer Copenhagen OSG 42b was repaired and saved! Radiometer is a Danish company from 1935, started by the engineers
Radiometer Copenhagen OSG 42b Oscilloscope Repair, From The 1950’ish Read More »
Having fun with the Schneider Automation / Telemecanique TSX Nano PLC. Its DOS based PL7-07 program IDE features a neat DRUM programming block that is a merge of old school mechanical control technique merged into modern programming for industrial control. Modern 20 years ago. Perfect for making a simple sequence control or a drum machine!
Old School PLC Drum/Sequencer Programming with Telemecanique TSX Nano PLC Read More »
A look at a box of IGBTs and MOSFETs that I have salvaged from household electronics like microwave ovens, induction stoves, solar inverters, welding machines, car and battery charges and other common high power electronics with switching inverters. The TO-247 IGBTs can be used in a DRSSTC Tesla Coil using the free half- and full-bridge
Where To Get “Free” TO-247 IGBTs and MOSFETs Read More »
This is a short walk-through on deuterium UV lamp theory and a test of the lamp in operation from its rather special power supply. PSU failed. Lamp failed. Complete fail. The lamp comes from the teardown of a Hitachi L7450 HPLC Diode-Array-Detector. HPLC is short for High Performance Liquid Chromatography. The DAD uses UV light
Hitachi 890-2430 Deuterium UV Lamp Test and Theory Read More »