Dave Erickson's Web Page

Electronics Projects:

DIY-SMU Source-Measure Unit. 3 voltage ranges up to +/- 150V and 6 current ranges 100mA down to 1uA in an Arduino-based SMU project
Corometrics 506 Medical Monitor Teardown. Another product that I designed in the 80s. Nice CRT based design
18bit precision DAC. Arduino-based precision voltage source using 18 bit DAC. Now with SCPI!
Power Supply Common Mode noise in DC-DC and AC-DC power supplies
High voltage 500V Power Supply Design. 500V, 100mA flyback design. 24V input.
LM399 Precision 10V voltage reference
Quad-SMU: 4 channel precision SMU for low voltage (+/- 10V) and low power (50mA). Based on AD5522 chip.
Solar Stuff: Analysis of solar panel shading, Solar panel simulator, Teardown of a low-cost Grid-Tie Inverter.
E-Load DIY Electronic Load (New) 100-200W E-load The project that evolved...
OneWart: to rule them all. This simple board replaces up to 8 USB, 12V and 5V Power Bricks.
LeoLed: Arduino based panel meter with OLED display and front panel controls
PS-Load Arduino-based Power Supply / Electronic Load project
DIY Synthesizer Projects Eurorack Music Synthesizer
Triple Power Supply: 3 channel Lab supply.
Analog Polysynth Project Open-source modular Analog Polyphonic Synthesizer, Teensy Controller
Ambika 4P Filter Board: Budget Ambika Project SMT DIY version of Ambika filter / voice boards.
X10 Power Line Control troubleshooting Including a simple X10 signal monitor.
Raspberry Pi Power for Audio Discussion of power noise issues and solutions for a RPI Volumio audio server project.
History of my DIY Audio projects: 50 years of DIY amplifiers, preamps, Whole-house audio systems and speakers.
Ode to IDC Ribbon Cables Why I like ribbon cable.

Datacube

Datacube Products Page: How I spent the 80s and 90s. MaxVideo, MV20, MaxPCI, product history and technology.
Restoring a Sun 4 VME System: Unique VME board Sparcstation 1 system. Can he do it??

Electronics Repair / Recondition Projects:

Qualidyne 850Watt 120A power supply teardown and repair: foray into 1980's power technology
HP / Agilent 4395A Spectrum / Network / Impedance analyzer repairs: 2 of them. Hint: it's the power supplies
Lambda LPD and LQD Power Supply repair / Upgrade: Repair and upgrade these classic power supplies
HP 3466A Digital Multimeter DMM repair and Lithium battery mod: Repair and upgrade a nice, older, DMM

Older Projects:

2005 Tower Speakers. Upgrading aging Bose-901s with modern tower speakers
Power-One Power Supply Hackers. Fun with linear Power Supplies, Also Condor, Bel Power and others
Fun with Tubes. Vacuum tubes, high voltage, and a guitar amp project
Molex KK Connectors. Why so complicated???
Arduino Projects. Particularly the Due, ARM based processor
USB SPI Control. Control stuff from your PC
Multi-Zone Audio System. Whole-House audio, STM32 Design Challenge project. Published in Circuit Cellar Jan-Feb 2014
STM32 Page. ARM Cortex M3 Microprocessor project
PC Preamp Audio system for PCs including PC to Stereo

Even Older Projects:

BoatBus Embedded AVR and LCD microprocessor projects for home and boat
Prototyping How I used to prototype electronics projects

Dave's Rules for life, the universe and everything.

Last updated 2/19/2023