The TTP229 16 Key Capacitive Touch Switch Digital Keypad Module features 16 capacitive touch keys on a 65mm x 50mm board, communicating over a 2-wire serial interface, operating from 2.4V to 5.5V, delivering accurate digital signals with a 4.0 second calibration time at startup. This ttp229 16 key capacitive keypad’s 65mm x 50mm footprint accommodates all 16 touch pads in a standard 4×4 grid arrangement, giving project builders a fixed panel planning dimension for enclosure cutout or surface-mount integration.
The ttp229 16 key touch module’s 4×4 grid maps naturally to numeric keypad layouts — digits 0 through 9 plus function keys — making it a practical choice for PIN code entry, access control panels, and calculator interfaces where users already expect a familiar telephone or ATM-style key arrangement. This ttp229 keypad module’s 2-wire serial output transmits all 16 key states sequentially over just two connections, keeping wiring clean regardless of the key count.
this ttp229 touch sensor’s 65mm x 50mm physical size is noticeably larger than smaller single or 4-channel touch modules, so builds with very constrained panel space may need to evaluate whether the full 16-key layout fits the available enclosure before ordering. This StemVolt module is well-suited for engineers building PIN access control panels and practical 16-key numeric input electronics projects.
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Features:
- 65mm x 50mm board houses 16 keys in a standard 4×4 grid
- 2-wire serial output keeps wiring simple across all 16 keys
- 4×4 layout maps naturally to numeric keypad arrangements
- 4.0 second startup calibration establishes 16-channel baseline
- 2.4V to 5.5V compatible with Arduino and battery-powered designs
Pin diagram of TTP229 16 Key Module:
Technical specifications:
 Applications:
- TTP229 used for Arduino PIN code access control build
- College project uses ttp229 16 key capacitive keypad for serial demo
- Smart locker uses ttp229 16 key touch module for India numeric PIN panel
- Calculator project uses ttp229 keypad module for full numeric touch input
- ATM simulator uses Capacitive Touch Switch 16 key for teaching project
Package includes:
- 1 x TTP229 16 Key Capacitive Touch Switch Digital Keypad Module
Deepak Taneja –
Safe packaging and smooth UPI payment ensured a hassle-free purchasing experience, while customer care support was available for setup and project-related assistance
Mrinal Grover –
Received this touch keypad module in excellent condition, all 16 touch keys responded accurately and smoothly, making it perfect for my electronics project.
kanak Goel –
16 touch-sensitive inputs, making it ideal for electronics projects, smart control panels, password systems, and arduino-based applications
Ishaan Verama –
Suitable for interactive user interfaces, access control systems, and STEM projects requiring multiple capacitive touch keypad inputs with reliable performance
Tara Solanki –
Worth every rupee
Ajayraj Kharbanda –
Fast shipping service
Saisha Bhasin –
Genuine quality product