{"product_id":"ttp229-16-channel-capacitive-touch-sensor-module-with-i2c-interface","title":"TTP229 16-Channel Capacitive Touch Sensor Module with I2C Interface","description":"\u003ch1\u003eTTP229 16-Channel Capacitive Touch Sensor Module – I2C \u0026amp; 2-Wire Serial Interface\u003c\/h1\u003e\n\n\u003cp\u003eThe TTP229 is a capacitive touch sensor module providing 16 touch-sensitive inputs. It detects finger contact through non-conductive surfaces and communicates over I2C or a simplified 2-wire serial interface. This module is ideal for adding intuitive touch controls to Arduino, ESP32, and Raspberry Pi projects.\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\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.4V to 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C \/ 2-wire serial (selectable via jumper)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNumber of Sensing Pads\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing Method\u003c\/td\u003e\n\u003ctd\u003eSelf-capacitance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eScan Cycle\u003c\/td\u003e\n\u003ctd\u003e~32 ms for all keys\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e50 × 30 × 2 mm\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\u003e16-key touch numeric keypad for security systems\u003c\/li\u003e\n  \u003cli\u003eTouch-controlled LED light panel with color mixing\u003c\/li\u003e\n  \u003cli\u003eInteractive touch game console using Arduino\u003c\/li\u003e\n  \u003cli\u003eCapacitive touch MIDI controller for music production\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe TTP229 works with any microcontroller offering I2C or two GPIOs for the serial mode. It operates at 3.3V and 5V logic levels, pairing seamlessly with Arduino Uno, Nano, ESP32, and Raspberry Pi. For Raspberry Pi, use 3.3V I2C directly; the module accepts 3.3V signals safely.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground. For I2C, wire SDA and SCL to the corresponding microcontroller pins; the module includes onboard pull-up resistors. No additional components are needed for basic touch detection.\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 Uno?\u003c\/summary\u003e\u003cp\u003eYes, the TTP229 works perfectly with the Arduino Uno. Connect VCC to 5V, GND to GND, SDA to A4, and SCL to A5 for I2C communication.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I chain multiple TTP229 modules on one I2C bus?\u003c\/summary\u003e\u003cp\u003eThe module supports configurable I2C addresses via solder jumpers, allowing up to four TTP229 devices on the same I2C bus. Simply configure each module's address pads before wiring them together.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it detect touch through a 2mm acrylic panel?\u003c\/summary\u003e\u003cp\u003eYes, the capacitive sensing works reliably through non-conductive materials up to 5mm thick. For thicker panels, you can increase sensitivity by changing the external capacitor on the module.\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":53444961141101,"sku":"CDN-0396","price":110.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_f3856ff1-accd-4aab-991b-df01571e809a.jpg?v=1781512531","url":"https:\/\/compoden.com\/products\/ttp229-16-channel-capacitive-touch-sensor-module-with-i2c-interface","provider":"Compoden","version":"1.0","type":"link"}