Amarino project- Arduino and Android based light sensor
With this project/application, you can make a light sensor dependent lamp. You can make a light sensor or dark sensor
Continue reading
Tag: Light dependent resistor
Light dependent blinker using LDR and CD4093
Here’s a simple experiment with LDR and CD4093. This is just a modification of a previous project “dark sensor using
Continue reading
Dark sensor using two transistors
This works same as the other dark detector circuit. When light is falling on LDR, its low resistance drives transistor
Continue reading
Basic RC circuit
For the circuit to work as light operated musical bell, we need to connect the SW1- switch to N/C terminal of relay. LDR has to be kept in a dark case.
Continue reading
Dark sensor using BC557
An automatic dark sensor can be made using a PNP transistor(BC557).
Continue reading
AM receiver from dark sensor
In this case, LDR has been replaced with capacitor C1-0.01uF and resistor R3-1K has been replaced with L1 & VC1. In place of a LED, a Piezo Diaphragm has been kept.
We just need to add inductor, capacitor and a piezo diaphragm to convert a dark detector to an AM radio.
Continue reading
