Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	FSR402 / RFP602
Sensor Type	Resistive Thin Film
Active Area Diameter	18 mm (0.75 inches)
Force Range	0.2 N to 20 N
Operating Voltage	3.3V to 5V DC
Output Signal	Analog Voltage
Cable Length	Long Tail (approx. 15 cm)
Thickness	< 0.5 mm
Interface Compatibility	Arduino, Raspberry Pi, ESP32
Application	Touch Switches, Pressure Mapping, Robotics

6 reviews

Anonymous

Mar 28, 2026

Rating: 4/5

Good sensitivity, easy to calibrate

I used this for a custom keyboard switch prototype. It took a little bit of code calibration to get the thresholds right, but once set up, the sensor is very reliable. Great value for the price.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable for prototyping

We ordered several of these for our lab. They are consistent across units and handle the wear and tear of student projects well. The long tail version is definitely preferred over the short pin versions.

Anonymous

Mar 13, 2026

Rating: 4/5

Great for learning sensors

Bought this for a university project on human-machine interfaces. It was easy to integrate and the documentation provided by the seller was helpful. Slightly sensitive to temperature changes but manageable.

Anonymous

Mar 13, 2026

Rating: 5/5

Plug and play with microcontrollers

Connected directly to an ESP32 analog pin. No extra components needed other than what's on the module. The output voltage scales linearly with pressure in the specified range.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for my robotics project

This module works exactly as described. The long tail cable made it very easy to connect to my Arduino without needing extension wires. The voltage conversion is smooth and responsive to light touches.

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent build quality

The thin film feels durable despite being so flexible. I've tested it with repeated presses and it hasn't lost accuracy. The included breakout board simplifies the circuit design significantly.

5 FAQ

Q: What is the maximum weight this sensor can detect before saturating?

A: The sensor is designed for forces up to approximately 20 Newtons (about 2 kg or 4.4 lbs). Applying force beyond this range may result in saturated output or potential damage to the thin film.

Q: Does this module require an external resistor to work?

A: No, this voltage conversion module has the necessary resistors built onto the PCB, so you can connect it directly to your microcontroller's analog input.

Q: How do I mount this sensor to a surface?

A: The back of the sensor has an adhesive layer. For best results, clean the surface with alcohol before peeling the backing and pressing firmly. Avoid bending the sensor at sharp angles near the tail connection.

Q: Can I cut the long tail cable to make it shorter?

A: Yes, you can cut the cable to your desired length. However, please ensure you strip and re-tin the ends carefully if you plan to solder them to a connector, avoiding damage to the insulation.

Q: Is this compatible with 3.3V logic systems like the Raspberry Pi?

A: Absolutely. The module operates comfortably within the 3.3V to 5V range, making it fully compatible with both 3.3V and 5V microcontrollers without level shifters.

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