CAP1188 8-Key Capacitive Touch Sensor Module SPI I2C 3V–5V

CAP1188 8-Key Capacitive Touch Sensor Module with SPI & I2C Interface

Add reliable, responsive touch input to your next electronics project with the CAP1188 8-Key Capacitive Touch Sensor Module. Built around the CAP1188 IC, this compact module detects touch across 8 independent capacitive channels and communicates via both SPI and I2C interfaces, making it easy to integrate with Arduino, Raspberry Pi, and other microcontroller platforms.

Operating across a wide 3V–5V voltage range, this module is flexible enough for both 3.3V and 5V systems. Each channel also features an onboard LED indicator so you can instantly visualize touch events during prototyping and development.

Key Features

• 8 Independent Capacitive Touch Channels – detect simultaneous multi-key touch inputs
• Dual Interface Support – SPI and I2C for maximum compatibility
• Wide Voltage Range – works at 3V and 5V logic levels
• Onboard LED Indicators – one LED per channel for instant visual feedback
• SMD Construction – compact, low-profile design for space-constrained builds
• Customizable Sensitivity – configure touch thresholds to suit your application
• Arduino & Raspberry Pi Compatible – works with popular development platforms right out of the box

Specifications

• IC: CAP1188
• Operating Voltage: 3V – 5V DC
• Interface: SPI / I2C
• Touch Channels: 8
• LED Outputs: 8 (one per channel)
• Package Includes: SMD module

Package Options

• Available in 1-piece, 2-piece, or 3-piece quantities to suit your project needs

What's in the Box

• 1× (or selected quantity) CAP1188 8-Key Capacitive Touch Sensor Module

Great for Use With

This module pairs perfectly with other DIY electronics components. Browse related items in our store:

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Frequently Asked Questions

Q: What microcontrollers are compatible with the CAP1188 8-Key Capacitive Touch Sensor Module?

A: The CAP1188 module is compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and most other microcontrollers that support SPI or I2C communication at 3V or 5V logic levels. A dedicated Arduino library is available to simplify integration.

Q: Can I use both SPI and I2C on the same module?

A: The CAP1188 module supports both SPI and I2C interfaces, but they are used one at a time. You select the desired interface by connecting the appropriate pins. Refer to the CAP1188 datasheet for pin configuration details for each protocol.

Q: What is the purpose of the onboard LEDs on the CAP1188 module?

A: Each of the 8 touch channels has a corresponding onboard LED that illuminates when that channel detects a touch event. This makes it easy to visually verify touch detection during prototyping without needing additional code or hardware.

Q: How many touch inputs can be detected simultaneously?

A: The CAP1188 IC supports multi-touch detection across all 8 channels. You can configure the module to recognize simultaneous key presses, making it ideal for keyboard, control panel, or interactive interface applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.