Teaching about hardware design and embedded development

Teaching about hardware design and embedded development
Hacking a broken pair of headphones into a bluetooth adapter.
In which I explain how I created a digital to analog converter to create analog signals to produce graphics on an oscilloscope
How I built an electronic dice roller with a small OLED display and an ATMega328 microcontroller.
Making a device for high-speed photography using Arduino and an ATtiny chip.