LDR (Light Dependent Resistor)
A Light Dependant Resistor (LDR) is a resistor that changes in value according to the light falling on it. An LDR commonly has a high resistance in the dark, and a low resistance in the light.
By placing the LDR as the top or bottom resistor in a potential divider circuit varying light level can be turned into varying voltages which a PICAXE can read.
The LDR create module provides an analogue input signal to the PICAXE on the motherboard which varies as brightness changes.
Bill of Materials
|Miniature light dependant resistor ||SEN002 ||1 ||Buy Now |
|10k resistor (pack 100) ||RES10K ||1 ||Buy Now |
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