This will deactivate the Relay and switch off the light. And because Q2 is connected to the RESET pin 15 of 4017, it will reset the IC and again output at Q0 becomes HIGH and Q2 becomes LOW ... IR ...

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Using this optical remote switch, you can switch on/off any electrical or electronic load. Like any remote control system, it has a mini transmitter unit (Fig. 1) and a receiver unit (Fig. 2) to ...

Working of the Basic 5V Relay Circuit. In the above circuit, 5V relay is powered by a 9V battery. An ON/OFF switch is added for the switching purpose of the relay. At the initial condition when switch ...

Fig. 2 illustrates the circuit diagram of the IR remote switch. The circuit is built around the TSOP1738 IR module (IR1), IC 4027 (IC1), two PNP BC558 transistors (T1, T2), a 5V SPDT relay, and a few ...

IoT-based Smart Home Automation using the new Blynk 2.0 ESP32 LDR & temperature sensor to control an 8-channel relay module from the manual switch, IR remote & smartphone using the Blynk IoT App.