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Add Touch Input Without Mechanical Buttons
The Capacitive Touch Sensor CAP1188 8 Key Breakout I2C or SPI is a capacitive touch sensor with i2c designed for touch interfaces, hidden controls, touchless panels, and human input projects. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Interface: I2C.
Why you’ll love it
- Compact size: 42mm x 18mm (1.6" x 0.7")
- Useful spec: 2.5g
- Easy wiring: I2C
- Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
- Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards
- Project-ready sensing: obstacle detection, touchless triggers, object counting, and simple automation
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Capacitive Touch Sensor CAP1188 8 Key Breakout I2C or SPI | capacitive touch sensor with I2C | Current item |
| Capacitive Touch 12-Key Sensor Breakout MPR121 | capacitive touch sensor with I2C | 12-key input, I2C interface |
| Capacitive Touch Sensor - Toggle | capacitive touch sensor | capacitive touch input |
| Capacitive Touch Module | capacitive touch sensor with digital output | capacitive touch input |
What you can build
This sensor is a good fit for hidden control panels, touch lamps, menu buttons, smart mirrors, and interactive displays.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus an I2C cable or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include I2C cables, pull-up friendly boards, OLED displays, and logging modules, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Capacitive Touch Sensor CAP1188 8 Key Breakout I2C or SPI |
|---|---|
| Dimensions | 42mm x 18mm (1.6" x 0.7") |
| Weight | 2.5g |
| Interface | I2C |
| Category | proximity presence sensors |
Wiring & usage notes
Connect VCC, GND, SDA, and SCL to your controller. Use the correct board voltage and I2C address in your code.
What’s in the box
1 × Capacitive Touch Sensor CAP1188 8 Key Breakout I2C or SPI
Frequently Asked Questions
What does the Capacitive Touch Sensor CAP1188 8 Key Breakout I2C or SPI measure?
It is designed to measure touch input from a finger or conductive surface.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this I2C sensor?
This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.
What affects accuracy?
Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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