Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switch Output (TTL) |
| Detection Component | Photoresistor (LDR) |
| Comparator Chip | LM393 Voltage Comparator |
| PCB Dimensions | 32mm x 14mm x 5mm |
| Mounting Hole Size | 3mm Diameter |
| Pin Interface | 3-Pin or 4-Pin Header |
| Sensitivity Control | Adjustable Potentiometer |
| Power Indicator | Red LED Status Light |
| Compatible Platforms | Arduino, Raspberry Pi, STM32 |
Anonymous
Apr 10, 2026
Rating: 5/5
Perfect for automation
Used this to trigger a relay when dark. Very responsive and easy to calibrate with the potentiometer.
Anonymous
Apr 03, 2026
Rating: 5/5
Reliable performance
Stable output, no flickering around the threshold. Used it in a robot line follower variant.
Anonymous
Mar 26, 2026
Rating: 4/5
Works as expected
Good for light intensity detection tasks in university projects. Robust build.
Anonymous
Mar 16, 2026
Rating: 5/5
Compact and cheap
Fits perfectly on my sensor shield. Great value for the price point.
Anonymous
Jan 25, 2026
Rating: 4/5
Good starter sensor
Easy to wire but instructions could be clearer. Works well once you understand the digital output.
Q: Is this analog or digital output?
A: This module provides a digital switch output (TTL). It goes high or low based on the light threshold set by the potentiometer.
Q: Can I connect this directly to 5V?
A: Yes, the operating voltage range is 3.3V to 5V DC, so 5V logic systems are fully supported.
Q: Does it work with Raspberry Pi GPIO?
A: Yes, it is compatible with Raspberry Pi GPIO pins. Ensure you connect the VCC to 3.3V or 5V accordingly.
Q: How do I adjust the sensitivity?
A: Use the blue potentiometer on the board. Turn it clockwise or counter-clockwise to set the light intensity threshold.
Q: Is this waterproof for outdoor use?
A: No, this is an indoor electronic component. It should be housed in a waterproof enclosure if used outdoors.
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