We have connected transistor base to Arduino pin A0 through a 1k resistor. An AC bulb is used for demonstration. The 12v adaptor is used for powering the circuit. Working is simple, we need to make ...

A relay is a electrically-controlled mechanical switch. It can control much more voltage and current than an Arduino pin (or the transistor included in your kit) can. If you want to use the Arduino to ...

Connections connecting Transistor Emitter to Relay and Base to Arduino Pin 2 and Collector to 5V in Arduino . connecting Push Button to Pin 8 in Arduino and Terminal 1a to GNR and Terminal 2a to 5V in ...

Arduino sends commands to this relay driver transistor and then light bulb will turn on/off accordingly. Visitor Counter Circuit Diagram The outputs of IR Sensor Modules are directly connected to ...

Electromechanical relays will require a transistor driver circuit in order to be driven by the Arduino. The typical circuit for driving a relay is the same as the transitor driver above with the ...

Automatic Water Tank Filling System Circuit Diagram The circuit is built around Arduino Nano (MOD1), 16×2 LCD with I2C/IIC interface (MOD2), three BC548 transistors, two IRF530 MOSFETs, and a relay.