Brief light dependent resistor LDR controlled astable multivibrator mode 555 timer circuit

Table of Contents

Light dependent resistors, also called photoresistors, are simply resistors whose resistance changes based on how much light is falling on them. All of my LDRs go from close to zero ohms of resistance, under very bright light, to over 200 million ohms (200MΩ) when completely covered.

Brief circuit schematics with short video – List of pages
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Diagram

Simple light dependent resistor LDR controlled astable multivibrator circuit by electronzap electronzapdotcom
Simple light dependent resistor LDR controlled astable multivibrator circuit by electronzap electronzapdotcom

Affiliate link ad. These look to be the same type of LDRs that I got from a couple of kits that I have. such as the following kit.

 

Video

Quick light dependent resistor LDR controlled astable multivibrator 555 timer circuit

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