This BF350 strain gauge sensor module uses a BF350 sensor to measure mechanical stresses in solid materials. This BF350 strain gauge sensor module includes an adjustable amplifier circuit to make it suitable for interfacing directly to a microcontroller ADC input and requires only a single 5V power supply. 

Specification of BF350:

1. Model: BF350-3AA / 1.5AA
2. Sensitivity coefficient: 2.0
3. Strain limit: 2%
4. Gate wire: length x width 2×3.5mm
5. Base dimensions: length x width 5×4.5mm
6. Base material: modified phenolic substrates.
7. Gate wire material: constantan
8. Resistance: 350 Ohm
9. Fatigue Life:> 10 million times
10. Flux: ordinary solder rosin
11. Reverse protection diode ~ (to prevent power reversed)
12. Board with a blue LED power indicator
13. Analog Output: The higher the curvature, the greater the output voltage.
14. Output analog voltage: 0-3.5V
15. Board size: 32 X 17mm
16. Behind the printed board pin definitions (Bending strain gauge, you can change the output voltage)