TTP229 4-Key Capacitive Touch Module
The TTP229 4-Key Capacitive Touch Module provides a modern and reliable alternative to traditional push buttons by offering capacitive touch technology. Designed with the efficient TTP229 capacitive sensing IC, this module responds quickly to finger contact and eliminates the mechanical wear found in traditional switches.
It’s compact and simple to integrate into embedded systems, interactive interfaces, DIY projects, or anywhere you need a sleek, touch-based input method. Compatible with 3.3V and 5V logic, it pairs effortlessly with a wide range of microcontrollers including NodeMCU and Raspberry Pi.
🛠 Technical Details
| Specification | Details |
|---|---|
| IC Chip | TTP229 |
| Number of Keys | 4 Capacitive Touch Pads |
| Interface Type | Digital (active-low per key) |
| Operating Voltage | 2.4V – 5.5V |
| Current Consumption | Ultra-low standby current |
| Response Time | < 60 ms |
| Touch Sensitivity | Adjustable via onboard jumper |
| Output Mode | Direct output for each key |
| Dimensions | 35mm × 29mm |
| Mounting | 4 Mounting holes |
| Weight | ~6g |
💡 Use Cases & Applications
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📟 Smart User Interfaces: Replace mechanical buttons in touch panels or control stations.
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🧠 DIY Smart Home Projects: Use for light control, door locks, or smart mirrors.
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🎮 Custom Game Controllers: Add sleek inputs to Arduino-based gaming systems.
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🚀 Wearables & Compact Projects: Ideal for low-profile, minimalistic input on portable devices.
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📲 IoT Control Panels: Integrate into projects using IoT Modules for touch-based data entry or mode switching.
🛠️ Pair With (Internal Links)
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🔌 Power Supplies – To ensure stable voltage for sensitive capacitive sensing
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🧩 Electronics Components – For pull-up resistors and logic converters if needed
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🧠 Raspberry Pi Accessories – Use it as a sleek UI for embedded Linux systems
🎥 YouTube Tutorial
📺 How to Use TTP229 Capacitive Touch with Arduino:
👉 Watch Now
⚠️ Precautions & Tips
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⚙️ Do not touch multiple keys at once to avoid false triggering.
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📏 Keep wires short to reduce electrical noise interference.
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🧼 Use clean fingers or a stylus — dirty or wet surfaces may reduce accuracy.
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🔧 Avoid placing near metallic surfaces unless grounded to avoid ghost touches.
🏁 Summary & CTA
The TTP229 4-Key Capacitive Touch Module is a modern, low-power solution for input systems where tactile feedback is less critical. Its seamless integration, quick response time, and professional aesthetic make it ideal for hobbyists and product designers alike.
👉 Order now from Electroway and upgrade your interface game with capacitive touch!
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