Colour & Light SensorsCompatible
LDR Light Sensor Module (LM393)
Light-dependent resistor on a comparator board – detects darkness and light levels. Build automatic night lamps, street-light models and light-following robots.
- Sensor
- Photoresistor (LDR)
- Comparator
- LM393
- Supply Voltage
- 3.3–5 V
- Outputs
- Digital (DO, adjustable), analog (AO)
- Pins
- VCC, GND, DO, AO
- Board Size
- 32 × 14 mm
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Specifications
- Sensor
- Photoresistor (LDR)
- Comparator
- LM393
- Supply Voltage
- 3.3–5 V
- Outputs
- Digital (DO, adjustable), analog (AO)
- Pins
- VCC, GND, DO, AO
- Board Size
- 32 × 14 mm
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Description
The resistance of an LDR (photoresistor) drops as light gets brighter. This module turns that into an analog voltage and a digital output that switches at a brightness you set with the trimpot – perfect for 'turn on when dark' projects.
Features
- Photoresistor (LDR) sensor
- Digital output via LM393 comparator, threshold adjustable
- Analog output on 4-pin versions
- 3.3–5 V supply, power and output LEDs
Package includes
1 × LDR light sensor module