Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | OPT101 |
| Sensor Type | Single-Chip Photodiode with Integrated Amplifier |
| Supply Voltage | 2.7V to 5.5V |
| Output Type | Analog Voltage |
| Spectral Response | Visible Light (Peak at 650nm) |
| Package Style | SOIC-8 Surface Mount |
| Operating Temperature | -40°C to +85°C |
| Linearity Error | Typically 0.2% |
| Application | Light Intensity Measurement, Proximity Sensing |
| Mounting Compatibility | Breadboard Friendly via Breakout Board |
Anonymous
Mar 31, 2026
Rating: 5/5
Perfect for Arduino Projects
This module works flawlessly with my Arduino Uno. The analog output is very stable and linear across different lighting conditions. Great for building a simple light meter.
Anonymous
Mar 30, 2026
Rating: 5/5
Excellent linearity
As advertised, the linearity is impressive. I compared it against a calibrated lux meter and the correlation was very strong. Highly recommended for precision tasks.
Anonymous
Mar 19, 2026
Rating: 4/5
Great starter sensor
Very easy for a beginner to understand. Just connect VCC, GND, and read the analog pin. Documentation could be slightly better, but plenty of examples exist online.
Anonymous
Mar 16, 2026
Rating: 5/5
Compact and efficient
The single-chip design is fantastic for keeping my robot chassis compact. Low power consumption is a huge plus for battery-operated projects.
Anonymous
Mar 14, 2026
Rating: 5/5
Reliable and Consistent
I bought five of these for a classroom project. All of them performed identically right out of the box. The integrated amplifier saves a lot of circuit design time.
Anonymous
Mar 02, 2026
Rating: 4/5
Good sensitivity, easy to use
The sensor picks up even subtle changes in room lighting. Integration was straightforward. Only giving 4 stars because the breakout board pins are a bit tight on standard breadboards.
Q: Do I need any external resistors to make this work?
A: No, the OPT101 includes an integrated feedback resistor and amplifier. You only need to provide power and connect the output to your reading device.
Q: What is the maximum supply voltage this sensor can handle?
A: The OPT101 operates safely within a range of 2.7V to 5.5V. We recommend using 3.3V or 5V for most microcontroller applications.
Q: Can I use this outdoors?
A: Yes, the operating temperature range is -40°C to +85°C. However, the component itself is not waterproof, so you must enclose it in a weatherproof housing for outdoor use.
Q: Is this sensitive to infrared light?
A: The spectral response peaks in the visible range around 650nm. While it has some sensitivity to near-infrared, it is primarily designed for visible light detection.
Q: Does this module output digital or analog signals?
A: This module outputs an analog voltage signal proportional to the light intensity detected. You will need an ADC (like on an Arduino) to read the value.
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