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 ...

This light sensor switch circuit allows the automatic connection of a lamp when the light is low (at nightfall) and will maintain the lamp ON for a certain period of time. This time can be adjusted ...

LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 1000 000 ohms, but when they are ...

Circuit diagram . Tilt Sensor . This is a Mercury switch based tilt sensor module that gives high at its output pin when tilted. It requires a 5V of DC input. It’s a three-terminal device consist of ...

Capacitive Sensor Circuit Diagram. Posted Friday, April 26, ... Relay with SPDT 2A @ 220V switch Coil Voltage 12V. Coil resistance 200-300 Ohm J1 ... LED lights, and the green light indicator), and ...

Circuit operation. Circuit diagram of the IR motion sensor relay switch is shown in Fig. 2. It is built around a PIR motion sensor module (connected across CON2), MOSFETs BS170 (T1) and IRF9540 (T2), ...

Thus the relay switches and light are switched on when LDR is illuminated as transistor switches. Circuit Components. LM358 comparator IC U1. Transistor Q1. Relay RL1. Light Dependent resistor LDR1.

Infrared illuminator circuit. The circuit (refer Fig. 1) can be divided into three parts: ambient light sensor, relay driver and IR LEDs. The ambient light sensor is built around multiturn linear ...

So, you can easily make this home automation project at home just by using an ESP32 and relay module. Or you can also use a custom-designed PCB for this project. This is the complete circuit diagram ...