Simple Light Sensor Circuit
![Simple Light Sensor Circuit](https://www.circuits-diy.com/simple-light-sensor-circuit/simple-light-sensor-circuit-photoresistor.jpg)
A light sensor circuit activates when light is detected by the circuit. The second circuit has a relay as an additional component.
![](https://www.electronics-tutorials.ws/wp-content/uploads/2013/08/io61.gif?fit=263%2C142?fit=263,226)
Light Sensor including Photocell and LDR Sensor
![](https://www.elprocus.com/wp-content/uploads/2015/12/Light-Sensor-Circuit.jpg)
Simple Light Sensor Circuit with Applications
![](http://3.214.98.238/wp-content/uploads/2015/12/Simple-PIR-sensor-circuit.jpg)
Simple PIR sensor circuit
![](https://static4.arrow.com/-/media/arrow/images/miscellaneous/l/light-circuit-diagram-reverse-r2-and-ldr-to-detect-light-or-dark-image-2-body.png?h=288&w=700&hash=DA5851CC2EF749E62A835A1D8C630951)
Light detector sensor: Building a simple circuit
![](https://i.pinimg.com/736x/20/5e/db/205edb7f2320d3f5de0b4f4d47165d7b.jpg)
Dark Sensor ( Light Sensor / Automatic Street Light )
![](http://www.electrobob.com/wp-content/uploads/2012/01/Simple-Light-Sensor.jpg)
Fun with LEDs
![](http://development.rookieelectronics.com/wp-content/uploads/2012/07/Light-Sensor-Using-op-ampRookie-Electronics.png)
Simple Light Sensor using 741 Op-amp, Rookie Electronics
![](http://1.bp.blogspot.com/-bbVedPef9-E/VA8Eb95P7qI/AAAAAAAAIpA/_UI102Q3yI0/s1600/light%2Bdark%2Bcircuit.jpg)
The Answer is 42!!: How to design a simple light dark detector
![](https://i.pinimg.com/736x/d5/8f/ca/d58fca7f597e70f5851d5b0c73f231ec.jpg)
Simple LDR Circuit to Detect Light Electronics circuit, Light detector, Ldr circuit
![](https://i.ytimg.com/vi/L7m_-AReqik/maxresdefault.jpg)
How To Make Automatic Day Night Light Sensor Circuit
![](http://www.electroniq.net/files/other/light-detector.jpg)
Simple light detector circuit project