BF350 High Precision Strain Gauge Pressure Sensor Module
BF350 350 Ohm High Precision Resistance Strain Gauge Pressure Sensor Module
The BF350 is a high-precision resistive strain gauge sensor module designed for measuring minute deformations in materials. When bonded to a surface, its 350-ohm resistance changes proportionally to applied strain, making it ideal for building custom pressure sensors, load cells, and force measurement systems. With a gauge factor of 2.0, it offers reliable performance for engineering and DIY projects.
Key Specifications
| Specification | Value |
|---|---|
| Sensor Type | Resistive strain gauge |
| Resistance | 350 Ω ±0.1% |
| Gauge Factor | 2.0 ±1% |
| Grid Material | Constantan |
| Backing Material | Modified phenolic |
| Temperature Range | -30°C to +80°C |
What You Can Build With This
- DIY digital kitchen scale using an HX711 amplifier and Arduino
- Custom load cell for small robotic grippers
- Pressure-sensitive mat for occupancy detection
- Material stress analysis jig for engineering labs
Compatibility
This strain gauge works with any microcontroller capable of reading a Wheatstone bridge, typically via an external ADC like the HX711 module. Common pairings include Arduino Uno, ESP32, and Raspberry Pi Pico. For best results, use a 5V excitation and a differential amplifier with at least 24-bit resolution to detect minute resistance changes.
Wiring Notes
Connect the strain gauge in a quarter-bridge configuration with three fixed resistors (e.g., 350 Ω each) to form a Wheatstone bridge. Use shielded, short leads to minimize noise. The signal output is in millivolts; an amplifier like HX711 is necessary before feeding into a microcontroller's ADC.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, when used with a suitable amplifier module like HX711, it easily interfaces with Arduino boards for data acquisition.
How do I attach it to a surface?
Use cyanoacrylate adhesive (super glue) to bond the gauge firmly to a clean, degreased metal or composite surface. Follow proper strain gauge installation techniques for accurate readings.
Can I measure pressure directly with this sensor?
This sensor measures strain; to measure pressure, attach it to a diaphragm or structure that deforms under pressure. Calibration will be required.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items