All About TTP223 Capacitive Touch Sensor
🔗 PCBWay (Sponsor): only $5 for 10 pcbs from https://www.pcbway.com/?from=CZcouple
Stop using clunky buttons for your Arduino projects. Instead, why not use the TTP223 capacitive touch sensor. The sensor detects your finger just like your phone screen. But the best part? It works through plastic, glass, and wood.
In this tutorial, I will cover everything you need to know about the TTP223 capacitive touch sensor module.
⚡Components Required
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🔗 1 x TTP223: https://s.click.aliexpress.com/e/_c3UT3PPb
🔗 1 x FNIRSI DPS-150: https://s.click.aliexpress.com/e/_c3EPIPtP
🔗 1 x FNIRSI HS-02 Smart Soldering Iron: https://s.click.aliexpress.com/e/_c3K4TF9v
⏱️ Video Elements
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00:00 - Introduction & Demo
01:07 - Module Breakdown & Hardware Specs
02:24 - Operating Voltage
02:56 - Understanding Jumper Pads A & B (Toggle vs Momentary)
04:15 - Microcontroller Integration (Arduino / ESP32) Code + Wiring
04:52 - Troubleshooting Tips (Ghost Touches & Power Noise)
⚡ Quick Tech Specs
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• Operating Voltage: 2.0V – 5.5V (3.3V recommended for MCU compatibility)
• Idle Current: ~1.5µA (ideal for battery projects)
• Logic Output: High / Low configurable via Jumpers A & B
📌 Jumper Settings Quick Reference:
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• A Open, B Open: Active HIGH, Momentary (Default)
• A Soldered, B Open: Active LOW, Momentary
• A Open, B Soldered: Initially LOW, Toggle / Self-Locking
• A Soldered, B Soldered: Initially HIGH, Toggle / Self-Locking
⚡ Thanks
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Full Blog Post: https://diy-projects4u.blogspot.com/2026/10/TTP223.html
GitHub: https://github.com/tarantula3/TTP223/
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#TTP223 #Arduino #Electronics #ESP32 #DIYTech #Microcontroller #TouchSensor