Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	Youxin Electronics
Model Number	TTP223
Operating Voltage	2.0V - 5.5V DC
Output Mode	Toggle (CMOS)
Sensitivity Adjustment	Via onboard capacitor pad
Response Time	Approx. 60ms
PCB Dimensions	16mm x 16mm
Mounting Hole Diameter	3.0mm
Interface Type	3-Pin Header (VCC, GND, OUT)
Application Range	DIY Electronics, Arduino, Raspberry Pi

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Great replacement for mechanical switches

No more clicking sounds! These capacitive touch sensors are silent and durable. I've installed them in a custom lamp control panel, and they look very modern.

Anonymous

Mar 11, 2026

Rating: 5/5

Reliable and compact

The small form factor makes it perfect for embedding into tight spaces in my robot design. The response time is fast enough for interactive buttons. No issues after weeks of testing.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for my Arduino project

These sensors work flawlessly with my Arduino Uno. The sensitivity is great out of the box, and I was able to detect touch through a thin plastic case. Highly recommended for beginners.

Anonymous

Mar 04, 2026

Rating: 4/5

Good value, minor tweaking needed

Bought a pack of ten for a classroom workshop. Most worked immediately, but two required adjusting the sensitivity capacitor slightly. Overall, excellent value for the price.

Anonymous

Mar 04, 2026

Rating: 4/5

Solid performance

Works well with 3.3V and 5V logic levels. I used them to replace mechanical switches on a custom controller. The only downside is that the soldering pads are a bit small for thick wires.

Anonymous

Mar 02, 2026

Rating: 5/5

Easy to use

I am new to electronics, and this module was very easy to wire up. The documentation provided by the seller helped me understand the pinout quickly. Works exactly as described.

5 FAQ

Q: How do I adjust the sensitivity if it's too high?

A: You can adjust the sensitivity by adding a small capacitor (e.g., 1pF to 50pF) to the designated 'C' pad on the PCB. A larger capacitance generally reduces sensitivity.

Q: Is the output signal digital or analog?

A: The output is digital. It provides a high or low logic level depending on whether the sensor is touched, making it compatible with standard GPIO pins.

Q: Does this come with header pins pre-soldered?

A: No, the module typically comes without header pins soldered to allow for flexible mounting options. You will need to solder your own headers or wires.

Q: What is the maximum current this module can handle?

A: This is a signal sensor module, not a power switch. It outputs a logic signal to a microcontroller and should not be used to drive high-current loads directly.

Q: Can this module detect touch through glass or acrylic?

A: Yes, the TTP223 can detect touch through non-conductive materials like glass or acrylic, provided the material is not too thick (typically under 5mm works best).

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