Adding a serial port to a QNAP TS-473A NAS for local shell access

Fun with an oscilloscope, ESP32 DACs and the DVD logo

Looking inside a digital pregnancy test from the pharmacy

Reversing a CANbus odometer filter/manipulator featured in Big Clive’s video

A teardown of a simple commercial pulse oximeter.

Testing a cheap and accessible method for etching PCBs at home quickly.

Using an I/O expander and an ESP8266 I read data from an old PATA HDD.