Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | Resistive Thin-Film |
| Model Number | FSR402 |
| Active Area Diameter | 18.5 mm (0.73 inches) |
| Force Range | 0 to 100 Newtons |
| Resistance Range | >10 MΩ (no force) to ~200 Ω (max force) |
| Thickness | 0.45 mm (0.018 inches) |
| Operating Temperature | -40°C to +85°C |
| Termination Style | Flexible PCB Tail with Gold Plated Contacts |
| Response Time | < 10 milliseconds |
| Typical Applications | Robotics, HMI, Medical Devices, Musical Instruments |
Anonymous
Mar 29, 2026
Rating: 5/5
Compact and effective
The small footprint is a huge plus. I used two of these to create a balance sensor for a self-balancing robot platform. They react instantly to weight shifts.
Anonymous
Mar 20, 2026
Rating: 4/5
Good for prototyping, not heavy industrial
Works perfectly for our initial prototypes and user interface testing. Just keep in mind the force limits; don't exceed 100N or you risk damaging the element. Great for low-to-mid force applications.
Anonymous
Mar 17, 2026
Rating: 5/5
Easy to use for beginners
As someone new to electronics, I found this very forgiving. A simple voltage divider circuit is all you need to start reading values. The documentation online is also very helpful.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my robotic gripper project
These sensors are incredibly responsive and easy to integrate with an Arduino. The thin profile allowed me to embed them directly into the gripper fingers without adding bulk. Highly recommended for hobbyist robotics.
Anonymous
Mar 13, 2026
Rating: 5/5
Durable and reliable
I've been cycling this sensor thousands of times in a test rig and it hasn't shown any signs of fatigue. The flexible film is surprisingly tough. Excellent value for the price point.
Anonymous
Mar 05, 2026
Rating: 4/5
Great sensitivity, needs calibration
The sensor works well out of the box, but you definitely need to write a calibration routine in your code to get linear readings. Once calibrated, it provides consistent pressure data for our prototype.
Q: What is the best way to connect this to a microcontroller?
A: The standard method is to use a voltage divider circuit. Connect one leg of the FSR to VCC, the other leg to an analog input pin, and place a fixed resistor (typically 10kΩ) between the analog pin and Ground.
Q: Can this sensor be bent or curved during installation?
A: Yes, the FSR402 is designed to be flexible. It can be bent to fit curved surfaces, provided the bend radius is not smaller than 6mm to avoid damaging the internal circuitry.
Q: What is the expected lifespan in terms of actuations?
A: Under normal operating conditions within the specified force range, the FSR402 is rated for over 1 million actuations. Lifespan may decrease if the sensor is consistently overloaded beyond 100N.
Q: Does the resistance change linearly with force?
A: The relationship between force and resistance is non-linear (inverse logarithmic). However, you can achieve a more linear response in your software by mapping the values or using a specific pull-down resistor value.
Q: Is this sensor waterproof?
A: No, the FSR402 is not waterproof. It should be protected from moisture and liquids. If used in environments where spills might occur, we recommend applying a conformal coating or a protective membrane.
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