Developing a new 4 digit plus mode display for a Power Designs Inc. 6050C power supply capable of displaying current at a milliamp resolution, and voltage at a 10 mV resolution.
Cleanup, repair, and upgrade of a Hewlett Packard (HP)6200B power supply.
Cleanup, repair, calibration check, and display upgrade of a Power Designs Inc. 6050C Universal DC Source.
My latest project is a prototype I2C RGB LCD display board with added EEPROM and some other extras.
Repair and Cleanup of a ESI 250 DE Universal Impedance Bridge.
A GPS disciplined 10 MHz oscillator and distribution amplifier project using a Sparkfun Pro mini microprocessor and an Isotemp 134–10 OCXO. (Click on images for larger version)
Cleanup, repair and Calibration of a Power Designs Inc. C500 Precision DC Source.
Cleanup and Calibration of a Power Designs Inc. 2005A Precision Power Source.
Repairing and clean-up of a Hewlett Packard (HP)5300B Measuring System with a 5305B 1,300 MHz Counter module.
This was supposed to be just a clean-up project, but this one turned into a bit more work that I had expected.
Restoring a Power Designs Inc. 6150 power supply
Bringing a Power Designs Inc. 6050D Universal DC Source back to life.
Constructing an ATtiny85 breakout board for prototyping and testing.
Building a 10 volt reference using some vintage AD584 IC’s from 1983.
Teensy 3.5/3.6 Breakout Kit Review(Revision A, DIP-64)
Assembly of a 64 pin breakout board for the Teensy 3.5/3.6 USB development board. Continue reading “Teensy 3.5/3.6 Breakout Review”
A project to design and build a Low Noise Amplifier (LNA) and 1,090 MHz bandpass filter for receiving ADS‑B transmissions on a Software Defined Radio (SDR).
Construction and circuit information for the DIY Open EVSE V4.23 electric vehicle charging system.
The DIY Open EVSE circuit board Version 4.23 is used for electric vehicle charging using the J1772 standard. It is an Open-source hardware project which uses the GNU General Public License and is based on the original designs by Chris Howell and Lincomatic. Continue reading “DIY Open EVSE V4.23″