Tags Posts tagged with "Light dependent resistor"

Light dependent resistor

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DOWNLOAD THIS PROJECT AND READ IN PDF Let's start with the list of components required for making an LDR based line following robot. 1 . Arduino-...

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It is a very simple experiment for Arduino amateurs, kids and beginners. It needs two LEDs, one LDR (Light Dependent Resistor), one tactile switch...

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With this project/application, you can make a light sensor dependent lamp. You can make a light sensor or dark sensor with this application. The light...

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Here's a simple experiment with LDR and CD4093. This is just a modification of a previous project "dark sensor using 2 transistors". In this...

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This works same as the other dark detector circuit. When light is falling on LDR, its low resistance drives transistor Q1-BC547 into conduction. This...

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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.

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An automatic dark sensor can be made using a PNP transistor(BC557).

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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.

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We can see how can we make heat sensor from dark sensor.

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A breadboard is a device for testing temporary electronics projects. Components used to test a circuit can be reused for other projects. None of the components are damaged. Almost all people start to learn electronics using breadboard because it is the simplest way of making circuit. The photograph shows a typical small breadboard which is suitable for beginners building simple circuits with one or two ICs (chips).