Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	KEYES
Model Number	KY-038
Sensor Type	Flexible Piezoresistive
Operating Voltage	3.3V - 5V DC
Output Signal	Analog Voltage
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Active Area Diameter	18mm
Force Range	0g to 10kg (approx.)
Interface Type	3-Pin Header (VCC, GND, SIG)
Package Includes	1x Sensor Module, 1x FPC Cable

6 reviews

Anonymous

Mar 26, 2026

Rating: 4/5

Great value for learning

Excellent module for understanding pressure sensing. It took a little calibration to get steady readings, but once set up, it responds well to touch and weight changes.

Anonymous

Mar 24, 2026

Rating: 5/5

Sensitive and durable

I've been using this for a digital scale prototype. The sensitivity is impressive for the price point. The thin film feels sturdy enough for repeated testing.

Anonymous

Mar 23, 2026

Rating: 4/5

Good integration with IDE

The analog output is very linear within the mid-range. You need to write your own mapping code for specific weight units, but the hardware does its job perfectly.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for robotics grippers

This sensor works flawlessly with my Arduino Uno project. The resistance-to-voltage conversion is smooth, and the flexible film makes it easy to mount on curved surfaces of my robot hand.

Anonymous

Mar 04, 2026

Rating: 5/5

Compact and effective

Small footprint makes it ideal for wearable tech projects. I attached it to a shoe insole to track step pressure, and the data logs are consistent.

Anonymous

Mar 03, 2026

Rating: 3/5

Needs careful wiring

The sensor works, but the connector pins are a bit fragile. Make sure you solder carefully or use a breadboard gently. Once connected, the performance is solid.

5 FAQ

Q: Is there a library available for this specific model?

A: While there isn't a brand-specific library, it functions as a standard analog sensor. You can use basic analogRead() functions or generic force sensor libraries available in the Arduino IDE.

Q: What is the maximum weight this can accurately measure?

A: The sensor is optimized for low to medium force applications, typically up to 10kg. Beyond this range, the readings may saturate or become non-linear.

Q: Does this module come with the connecting wires?

A: Yes, the package includes a short FPC cable to connect the sensor film to the breakout board module.

Q: Can this sensor measure dynamic force like tapping?

A: Absolutely. The piezoresistive element reacts quickly to changes in pressure, making it suitable for detecting taps or sudden impacts.

Q: Can I cut the flexible film to make it smaller?

A: No, cutting the active area of the thin film will damage the conductive traces and render the sensor non-functional. Please use the sensor as provided.

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