Limpkin's blog

A Board to Parallel-Connect 4 High-Power Batteries

A Small Line Injector to Measure PSRR

Assembling a 48V 18650 Cell-Based Battery

A Board for Current-Based Side Channel Attacks

Using a Balun for Current-Based Side Channel Attacks

Repairing a Pair of Audioengine A5 Speakers

CDM324 Doppler Speed Sensor, with FFTs!

A DC Block to Measure Low Frequencies

The Low Frequency, Low Noise Amplifier Board

The IN-9 Nixie Clock

Radiation Pattern Measurements in an RF Chamber

Project In A Day: When Is My Next Bus?

Making the Electronics for a 24GHz Doppler Sensor

A Mass Programming Bench for ATMega32u4 MCUs

A Small Collection of NodeMCU Lua Scripts

High Voltage Power Supply for Nixie Tubes

An Open CVMeter

A Connected Lamp to Wake Me Up

A Timeless Fountain

A Personal Perspective on Managing an Open HW Project - Part 2