Force sensor round 15mm - short connector - Pololu 2728

• The inner diameter is 18.3 mm
• Diameter of the measured area: 15 mm
• Weight: 0.25 g

More details in thedocumentation.

The sensor reduces its resistance when the force put to the round tip, increases. Due to this phenomenon, and the use of microcontroller with analog to digital converter, you can build a sensor that measures the force. The measurement can be displayed, for example, on the LCD display.

In the absence of the force affecting on sensor, the resistance is about 1M Ω. Putting on of a few-gram, changes the resistance to few kΩ. The measurements are very stable and the results are repeatable when the applied force is constant (there's no problems with hysteresis).

Measurement system and graphs of the voltage dependance and resistance from the applied force.

The product is compatible with Arduino

Online, you can find a tutorial along with a sample code for Arduino onthe bildr.

• round 5 mm (0.2")
• round 13 mm (0.5")
• square 38 mm (1.5")
• longitudinal (length of 61 cm)

• The website of the manufacturer of Pololu 2728
• Documentation of the sensor
• User manual