Flex Sensor 2.2"
by Spectra Symbol / clone
SKU: PSA-CMP-FLEX
No reviews yetTypical India street price
₹250–₹550
Bend → resistance change — gloves, bridges, posture.
Interface: Analog
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Concept
Carbon ink on a substrate cracks microscopically when bent, raising resistance.
A little theory
Use as half a divider with 47 kΩ. analogRead maps to angle roughly. In the classroom, treat Flex Sensor 2.2" as a beginner part using Analog. Typical India street price is about ₹250–₹550. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
One pin 5 V, other to A0 + pulldown resistor to GND.
Classroom & project use
- Smart glove
- Door-bend alarm
- Bio-mech labs
Buying in India
Precautions
- Don’t crease sharply
- Not waterproof
Specifications
| Length | 2.2" |
| Type | Resistive flex |
| Category | Sensors |
| Difficulty | Beginner |
| Voltage | 3.3–5V (voltage divider) |
| Interface | Analog |
Pinout
VCC | GND | AO (and DO if comparator module)
