Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching Output (0 and 1) |
| Detection Angle | 60 degrees |
| Wiring Configuration | 4-Wire (VCC, GND, DO, AO) |
| Sensitivity Adjustment | Potentiometer included |
| Comparator Chip | LM393 |
| PCB Dimensions | 32mm x 14mm x 8mm |
| Mounting Hole Diameter | 3mm |
| Response Time | < 1ms |
| Application Range | Smart cars, light tracking, automatic lighting |
Anonymous
Mar 29, 2026
Rating: 5/5
Perfect for my Arduino robot car
This sensor module works flawlessly with my DIY smart car project. The sensitivity adjustment is very precise, allowing me to calibrate it perfectly for indoor lighting conditions. The 4-wire setup gives great flexibility.
Anonymous
Mar 25, 2026
Rating: 5/5
Responsive and compact
I used this for an automatic night light project. The response time is incredibly fast, and the small form factor made it easy to mount inside a tight enclosure. Highly recommended for beginners.
Anonymous
Mar 20, 2026
Rating: 4/5
Good value, clear instructions needed
The hardware quality is solid and the LM393 chip is reliable. It took me a moment to figure out the analog vs digital pin usage, but once connected, it detects light changes instantly. Great for the price.
Anonymous
Mar 19, 2026
Rating: 4/5
Solid performance
Does exactly what it says on the tin. The potentiometer allows you to set the threshold precisely. I deducted one star only because the soldering pads are a bit small for thick wires.
Anonymous
Mar 14, 2026
Rating: 5/5
Bulk buy for our student team
We ordered ten of these for our high school robotics club. Every single unit worked out of the box. The students found them easy to interface with Raspberry Pi and Arduino boards.
Anonymous
Mar 01, 2026
Rating: 5/5
Great for solar tracking experiments
Using two of these in a differential setup to track the sun for a small solar panel. They are well-matched in sensitivity and provide stable readings throughout the day.
Q: Does this come with headers pre-soldered?
A: No, the module is shipped without headers to allow for flexible wiring options. You will need to solder your own header pins or wires depending on your project needs.
Q: Can this detect infrared light from a TV remote?
A: This sensor is primarily designed for visible light detection. While it may react slightly to strong IR sources, it is not optimized for infrared communication; we recommend a dedicated IR receiver module for that purpose.
Q: Is the photosensitive resistor replaceable if it gets damaged?
A: Yes, the photosensitive resistor is through-hole mounted, so it can be desoldered and replaced with a standard LDR of similar specifications if necessary.
Q: Can this module be used directly with a 3.3V microcontroller like ESP32?
A: Yes, the module operates within a 3.3V to 5V range, making it fully compatible with 3.3V logic microcontrollers like the ESP32 or ESP8266 without needing a level shifter.
Q: What is the difference between the DO and AO pins?
A: DO (Digital Output) provides a clean HIGH/LOW signal based on your threshold setting. AO (Analog Output) provides a continuous voltage value representing the actual light intensity detected by the resistor.
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