Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching Output (0 and 1) |
| Pin Count | 4 Pins |
| Sensor Element | Photoresistor (LDR) |
| Comparator IC | LM393 |
| PCB Size | 3cm x 1.4cm |
| Mounting Hole | 3mm Diameter |
| Sensitivity | Adjustable via Potentiometer |
| Indicator LED | Power and Output Status |
| Interface | TTL Level Compatible |
Anonymous
Apr 07, 2026
Rating: 4/5
Good value sensor
Solid build quality for the price. The analog output is useful though not always needed for basic projects. Took a moment to understand the pinout diagram.
Anonymous
Mar 17, 2026
Rating: 3/5
Works but needs tuning
Functionality is fine but the default sensitivity was too high out of the box. Had to adjust the pot significantly to get the desired trigger point.
Anonymous
Mar 15, 2026
Rating: 5/5
Essential Component
Bought five for a line follower robot variant. All worked out of the box. Fast delivery and well packaged to prevent pin bending.
Anonymous
Mar 15, 2026
Rating: 5/5
Great for Arduino Projects
Works perfectly as described. Easy to calibrate with the potentiometer. Used it for a simple night light project and it responded instantly to room lighting changes.
Anonymous
Feb 19, 2026
Rating: 5/5
Reliable Light Detection
Very responsive to light changes. The LM393 comparator is stable and does not fluctuate wildly. Great for robotics applications where consistency matters.
Q: What is the specific detection range in Lux?
A: It detects ambient light levels; the specific lux range depends on calibration and environmental conditions.
Q: Does it provide analog output?
A: Yes, the AO pin provides an analog voltage value based on the light intensity detected by the photoresistor.
Q: Is this compatible with 3.3V logic systems?
A: Yes, it operates between 3.3V and 5V DC, making it suitable for most 3.3V logic microcontrollers.
Q: Can I use this with a Raspberry Pi?
A: Yes, but ensure you connect the output to GPIO pins suitable for 3.3V input to avoid damage.
Q: What does the blue potentiometer do?
A: It adjusts the sensitivity threshold for the digital output signal, determining when the LED turns on or off.
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