I needed to set a large number of ds18b20 sensors up and I had to record the address and position of each sensor.

DIY Arduino hot air SMD rework station.

An Arduino powered floppy disk controller and reader/writer for making and writing disk images from and to old AmigaDOS floppy disks.

Cool little Pocket Metal Locator sensitive enough to identify small nails and tacks in wood with four independent search coils and LEDs.

Use a 3D printed encoder wheel, LED, and 2 photocells to demonstrate how a quadrature encoder works.

A soft switch with integrated energy monitoring enabling spark-free switching for electric vehicles and drones.