TTP229 16-Channel Capacitive Touch Sensor Module with I2C Interface
TTP229 16-Channel Capacitive Touch Sensor Module – I2C & 2-Wire Serial Interface
The 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.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 2.4V to 5.5V DC |
| Communication Interface | I2C / 2-wire serial (selectable via jumper) |
| Number of Sensing Pads | 16 |
| Sensing Method | Self-capacitance |
| Scan Cycle | ~32 ms for all keys |
| Dimensions | 50 × 30 × 2 mm |
What You Can Build With This
- 16-key touch numeric keypad for security systems
- Touch-controlled LED light panel with color mixing
- Interactive touch game console using Arduino
- Capacitive touch MIDI controller for music production
Compatibility
The 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.
Wiring Notes
Connect 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.
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 Uno?
Yes, 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.
Can I chain multiple TTP229 modules on one I2C bus?
The 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.
Does it detect touch through a 2mm acrylic panel?
Yes, 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.
📦 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.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
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