Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Chip Model | TTP224 |
| Channel Count | 4 Independent Channels |
| Operating Voltage | 2.0V to 5.5V DC |
| Response Time | Approx. 60ms at VDD=3V |
| Output Type | Direct Drive / Toggle Mode Selectable |
| PCB Dimensions | 28mm x 22mm |
| Mounting Hole Size | 3mm Diameter |
| Interface | Standard 2.54mm Pitch Header |
| Sensitivity Adjustment | Via External Capacitor (Optional) |
| Application Scope | DIY Electronics, Home Automation, Control Panels |
Anonymous
Mar 15, 2026
Rating: 4/5
Great for learning
As a beginner, I found this module very forgiving. It helped me understand capacitive sensing without dealing with complex raw sensor data. The only downside is the silk screen is a bit small to read.
Anonymous
Mar 09, 2026
Rating: 5/5
Stable performance
Been running this module continuously for two weeks in a test rig. No drift or loss of sensitivity observed. The build quality of the PCB looks professional with clean solder joints.
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect for my Arduino project
This module worked flawlessly with my Arduino Uno. The sensitivity is great right out of the box, and it detects touch through a thin plastic case easily. Wiring was straightforward using the provided pinout diagram.
Anonymous
Mar 05, 2026
Rating: 5/5
Easy integration with ESP32
Connected this to an ESP32 for a smart home light switch prototype. The voltage range supports 3.3V logic directly without level shifters. Code examples found online made integration a breeze.
Anonymous
Mar 03, 2026
Rating: 5/5
Reliable and compact
I've used these in three different projects now. They are compact enough to fit behind small panels and the response time is very fast. Highly recommend for anyone building custom touch interfaces.
Anonymous
Mar 02, 2026
Rating: 4/5
Good value, minor sensitivity tweak needed
Overall a solid sensor module. I had to add a small capacitor to one channel to reduce false triggers in my noisy environment, but once adjusted, it works perfectly. Great price for four channels.
Q: Does this come with header pins soldered?
A: No, the module usually ships with unsoldered header pins included in the package to allow for flexible mounting options. You will need to solder them yourself if you want to use a breadboard.
Q: Can this module detect touch through glass or acrylic?
A: Yes, the TTP224 can typically detect touch through non-conductive materials like glass or acrylic up to approximately 3-5mm thick, depending on the material density and sensitivity settings.
Q: What is the maximum current this module can sink or source?
A: The module's output pins are designed for logic signaling. They can typically source/sink around 8mA to 10mA, which is sufficient for driving an LED or a microcontroller input, but not for driving high-power loads directly.
Q: Is the output active high or active low?
A: The output mode can be configured. By default, many modules ship in direct drive mode where the output goes high upon touch, but you can often select toggle mode or adjust polarity via specific pin configurations described in the datasheet.
Q: Can I use this with a 5V Raspberry Pi GPIO?
A: Yes, the module operates within 2.0V to 5.5V. However, ensure your Raspberry Pi GPIO tolerance matches the output voltage. For 5V operation, a logic level converter is recommended to protect the Pi's 3.3V GPIO pins.
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