The DP30V5A is a cheap digital power supply with constant voltage and constant current features, so i was inspired by this video to build my own bench power supply. The only thing i had to hack to put it into a
DIY bench power supply (DP30V5A)
Wifi/FTP camera with ESP8266 and serial camera PTC06 (and PTC02/PTC08)
Combining various sources of code, i built a cheap web camera that sends an updated image to a web server every 2 minutes. It is based on the ESP8266 wifi module, programmed with the Arduino IDE, and a serial camera (TTL level)