Attributes

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

6 reviews

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.

5 FAQ

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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