Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	Risym
Model Number	RS-Photo-01
Operating Voltage	3.3V - 5V DC
Detection Component	LDR (Light Dependent Resistor)
Output Signal	Digital Switching Output (TTL)
Sensitivity Adjustment	Potentiometer Included
Indicator LED	Yes, Power and Status LEDs
PCB Dimensions	32mm x 14mm
Mounting Holes	3mm Diameter
Application Scope	Smart Cars, Light Switches, Robotics

6 reviews

Anonymous

Mar 25, 2026

Rating: 4/5

Compact and effective

Small form factor fits perfectly in tight spaces. The only minor issue is that the LED indicator is quite bright at night, but a piece of tape solved that easily.

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for my Arduino robot car

This sensor module worked flawlessly out of the box. The sensitivity adjustment potentiometer makes it very easy to calibrate for different lighting conditions in my smart car project.

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable light detection

I used this for an automatic night light project. It detects dusk accurately and the digital output is clean without any bouncing issues. Highly recommended for beginners.

Anonymous

Mar 08, 2026

Rating: 4/5

Good value, clear instructions needed

The hardware quality is solid and the response time is quick. I deducted one star because it would be nice to have a printed guide on how to wire it specifically for 3.3V systems.

Anonymous

Mar 06, 2026

Rating: 5/5

Great for photoelectric switches

Exactly what I needed for a custom photoelectric switch setup. The threshold adjustment is smooth and holds its setting well even after vibration testing.

Anonymous

Mar 03, 2026

Rating: 5/5

Bulk purchase success

Bought ten of these for our school robotics club. Every single unit functioned correctly. The mounting holes are well-placed for standard chassis setups.

5 FAQ

Q: Can this module be directly connected to a Raspberry Pi GPIO pin?

A: Yes, as long as you configure the input voltage to 3.3V. The digital output is TTL compatible, making it safe for Raspberry Pi usage.

Q: Is the output analog or digital?

A: This specific module provides a digital switching output (High/Low). If you require analog values representing exact light levels, please check our analog LDR sensor variants.

Q: Does this come with jumper wires?

A: The package typically includes the PCB module only. Jumper wires are sold separately, but standard 2.54mm pitch headers are used for easy connection.

Q: How do I adjust the sensitivity?

A: There is a blue potentiometer on the board. Rotate it clockwise to increase sensitivity (trigger in brighter light) or counter-clockwise to decrease it (trigger only in darker conditions).

Q: What is the range of light intensity this sensor can detect?

A: The LDR component reacts to visible light changes. While it does not provide a specific Lux value without calibration, it effectively distinguishes between dark, dim, and bright environments for switching purposes.

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