Light Sensor Unit with Photo-resistance - The Pi Hut

Light Sensor Unit with Photo-resistance

Name: Light Sensor Unit with Photo-resistance
Brand: M5Stack
SKU: U021
Price: 3.30 GBP
Availability: InStock

M5StackSKU: U021

£3.30

incl. VAT

excl. VAT

Only 3 units left

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This Light Sensor is a light-intensity sensor unit with an adjustable photo-resistor.

A photo-resistor is a light-controlled variable resistor. The resistance of a photo-resistor decreases with increasing incident light intensity and vice versa. The sensor exhibits photoconductivity which makes it possible to detect the light varies based on voltage and use an AD (Analog to digital converter) to convert the digital data.

We added some extra work to strengthen the circuit, a Dual Differential Comparators LM393, compares the differential voltage between the photo-resistor and the varistor. It could offer a larger and more accurate range of light intensity.