This is a low cost Red Laser Diode in Copper Casing. The Mean Wave Length is 650nm and the Power Rat..

Product Summary: · Module can be controlled directly by Micro controller (Raspberry Pi, Arduino,..

12V 8-Channel Relay Module Optocoupler Low Level Trigger for Arduino Precise Module Description: 1, ..

A real-time clock is like a watch - it works on a battery and keeps time for you even when there..