Here is the circuit of an Arduino-based Panic Alarm! The wiring is very simple so that even ... An additional Electro-Magnetic Relay (EMR) is also attached to the interface circuit. With the help of ...

This is a low-level 5VDC 2-channel relay module with a standard interface that can be controlled directly ... If so, remember to connect the VCC pin to 5V of the Arduino board to enable the control ...

Connection is achieved ... [nanoflite] demonstrates the interface with an Arduino Uno and a Grove shield. The C64 is able to display the state of the LED, relay and servo outputs, as well as ...