Arduino-controlled laser-shutter (USB and push-button control) with controlled acceleration and breaking. The magentic coil of a hard-drive is perfectly suited to create a fast laser shutter with down ...

The proposed 28pin DIL module includes a surface-mount ATmega328, plus an Espressif ESP8285 for the Wi-Fi interface, a Wi-Fi antenna and 2Mbyte of flash memory. An integrated push button and ...