{"product_id":"fsr-402-force-sensitive-resistor-compoden","title":"FSR 402 Force Sensitive Resistor | Compoden","description":"\u003ch1\u003eFSR 402\u003c\/h1\u003e\n\u003cp\u003eThe FSR 402 is a round force-sensitive resistor with a 14.7 mm active area that decreases its resistance as physical pressure increases. It is widely used in touch interfaces, musical instruments, and robotics for analog force feedback. The sensor is thin, flexible, and requires only a simple voltage divider circuit to interface with microcontrollers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eActive Area Diameter\u003c\/td\u003e\n\u003ctd\u003e14.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.46 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eActuation Force\u003c\/td\u003e\n\u003ctd\u003e~0.1 N\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eForce Sensitivity Range\u003c\/td\u003e\n\u003ctd\u003e0.1 N – 100 N\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResistance Range\u003c\/td\u003e\n\u003ctd\u003eInfinite (no load) to ~300 Ω (max load)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePressure-sensitive MIDI drum pads and music controllers\u003c\/li\u003e\n  \u003cli\u003eGrip force detection in robotic hands and prosthetics\u003c\/li\u003e\n  \u003cli\u003eMuscle activity monitoring for physiotherapy wearables\u003c\/li\u003e\n  \u003cli\u003eCustom touch-sensitive buttons for interactive art\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe FSR 402 works with any analog-capable board, including Arduino, ESP32, Raspberry Pi (with ADC), and STM32. A typical setup uses a 10 kΩ pull-down resistor and a 5V supply, scaling the analog voltage from 0V (no touch) to near Vcc (hard press). It fits standard breadboards and perfboards with minimal soldering.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect one terminal of the FSR to 5V, the other terminal to a 10 kΩ resistor to ground, and the junction point to an analog input. Do not exceed 100 N of force, as this can permanently deform the sensor. For consistent readings, ensure the contact surface is flat and clean.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery 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.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the FSR 402 is straightforward to use with Arduino. Wire it with a 10 kΩ resistor in a voltage divider configuration and read the analog pin using analogRead(). The sensor provides a relative force reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it measure weight accurately?\u003c\/summary\u003e\u003cp\u003eThe FSR 402 is not designed for precision weight measurement. It detects relative pressure changes and can be calibrated for approximate force, but for gram-level accuracy a load cell is a better choice.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work with 3.3V logic?\u003c\/summary\u003e\u003cp\u003eYes, the sensor works with 3.3V. The output voltage will scale proportionally; you may adjust the pull-down resistor value (e.g., 10 kΩ remains suitable) to optimise the analog reading range on a 3.3V ADC.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery 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.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445149327725,"sku":"CDN-0880","price":180.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_0da941aa-5b43-4b51-a984-3678bfeddeef.jpg?v=1781513536","url":"https:\/\/compoden.com\/products\/fsr-402-force-sensitive-resistor-compoden","provider":"Compoden","version":"1.0","type":"link"}