Automatic Light Controller 9 Steps with Pictures Circuit Diagram Circuit Diagram 1. Automatic Street Light Control System.(Sensor using LDR & Transistor BC 547.). We have tried and Cicuit#1 in this tutorial but you may also try the second one (Circuit#2) mentioned below ight after circuit no 1. In this project, we use relay for controlling AC light because the Arduino cannot control high volt , but a relay can do this job, which is the sole design of it. so we are using relay as switch to control high power devices. There are two ways to assembly the relay connection : 1. NC = Normally Closed Connection ( which I'm going to use ). 2. We'll attach a relay to the setup and a light bulb in our next circuit to illustrate how to improve the circuit to perform actions such as lighting a bulb. Run Code After setting up your circuit as above, you must upload a control code .
How the Night Light Circuit Works: The automatic night light circuit operates based on the principle of the light-dependent resistor (LDR) and transistor control. In darkness or low-light conditions, the LDR's resistance is high, preventing current from flowing through the base of the transistor. Drill holes in the project box to mount the electronic circuits. The ldr circuit will be mounted such that it faces the lasers. The arduino will be mounted in the center such that you have usb access. Insulate and add the relay module in there. My box was small so it was a tight fit. I couldnt mount the relay module.
The Perfect Automatic Lighting System Using Arduino + LDR + PIR Circuit Diagram
The circuit of an automatic night light described in this article can be used to put OFF a light when day breaks and switch it ON back when darkness sets in. Learn how simple it is to build a 12 volt day night switch. The entire circuit of this 12 volt day night switch can be built over a small piece of general PCB and the whole assembly along with the transformer may be housed inside a good Automatic Light Circuit Diagram with Fixed Trigger Threshold Automatic Light Circuit with Adjustable Trigger Threshold Building the Automatic Light Circuit. The LM741 IC is housed in a 8-pin DIP, so normal DIP IC pin numbering applies to it. If using a bright LED, place the LED away from the LDR. A photo of the completed breadboard circuit is
The circuit can be used as a commercial automatic street light control system, as a domestic porch light or corridor light controller or simply can be used by any school kid for displaying the feature in his school fair exhibition.The following content describes four simple ways of making a light activated switch using different methods.. 1) Light Activated Day Night Switch using Transistors
