Nnnnstreet light circuit using ldr pdf

Elonics electronics projects on breadboard 99,212 views 5. Automatic street light controller circuit using relay and ldr. A light detector or a light sensor is a device or circuit that detects the intensity of the light incident on it. Following are the components which we are going to use for this miniproject of the street light circuit using ldr. Different types of light detectors are ldrs or light dependent resistors, photo diodes, photo transistors, etc. Pdf automatic street light control system using ldr and. Ldrs or light dependent resistors are very useful especially in light dark sensor circuits. When the light level is low the resistance of the ldr is high. Its like dark and light detector circuit but this time we are using arduino to get more control over light. Light sensor and darkness detector circuit using ldr and. When the strength of the light falling on ldr increases the ldr resistance decreases, while if the strength of the light falls on ldr is decreased, its resistance increased. Street light circuit using ldr electronics project.

We have tried this one in this tutorial but you can also try the second one mentioned below. How to make automatic night light circuit ldr youtube. Normally the resistance of an ldr is very high, sometimes as high as 000 ohms, but when they are illuminated with light resistance drops dramatically. Automatic street light control system using ldr and ic555 timer.