Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	FSR402
Sensor Type	Resistive Thin Film
Active Area Diameter	18 mm
Force Range	0.1 kg to 10 kg
Operating Voltage	3.3V - 5V DC
Interface	Analog Output
Material	Flexible Polymer Thick Film
Thickness	< 0.5 mm
Response Time	< 10 ms
Application	Robotics, Wearables, Touch Interfaces

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Excellent value for money

Bought a pack for a wearable health monitor prototype. They are thin, durable, and provide consistent data across multiple units.

Anonymous

Mar 31, 2026

Rating: 4/5

Good sensitivity, needs calibration

The sensor works well once calibrated. It detects slight pressure changes accurately, though you need to write a good smoothing algorithm for stable readings.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable for prototyping

We use these in early-stage product development. They hold up well under repeated testing cycles and provide clear analog signals.

Anonymous

Mar 22, 2026

Rating: 4/5

Solid performance

Works as advertised. The only downside is that the resistance curve is non-linear, but that is expected for this type of technology.

Anonymous

Mar 21, 2026

Rating: 5/5

Great for educational projects

Used these in our university robotics course. Students found them easy to wire up and the force feedback was immediate and reliable.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for my robotic gripper project

These sensors are incredibly responsive and easy to integrate with Arduino. The flexibility allows them to conform perfectly to curved surfaces on my robot hand.

5 FAQ

Q: What is the maximum weight this sensor can measure before breaking?

A: While the optimal range is up to 10 kg, the sensor can physically withstand higher loads. However, accuracy decreases significantly beyond 10 kg, and excessive force may damage the thin film over time.

Q: Do I need a specific resistor for the voltage divider circuit?

A: A 10kΩ pull-down resistor is commonly recommended for general-purpose applications with the FSR402, but you can adjust this value based on your specific force range requirements.

Q: Can this sensor detect very light touch, like a feather?

A: The FSR402 has a minimum detection threshold of approximately 0.1 kg (100g). It is not sensitive enough to detect extremely light touches like a feather.

Q: Can these be cut to size to fit smaller areas?

A: No, cutting the sensor will damage the internal circuitry and render it non-functional. Please select a model with an active area that fits your design needs.

Q: Is this compatible with Raspberry Pi?

A: Yes, it is compatible. Since the sensor outputs an analog signal, you will need an external ADC (Analog-to-Digital Converter) module to interface it with a Raspberry Pi.

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