This tester can be used for NiCd, NiMh, and all flavors of Li-Ion rechargeables.

DIY Arduino hot air SMD rework station.

Use FreeRTOS (simple, easy, robust, & optimised for the Arduino IDE) to reduce the power required for battery or low power applications.

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

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