Elecrow
Capacitive Touch Shield
This Capacitive Touch Shield has 9 build-on capacitive touchpads, and the other 3 electrodes for further usage. With this shield, you can have a total of 12 ...
This Capacitive Touch Shield has 9 build-on capacitive touchpads, and the other 3 electrodes for further usage. With this shield, you can have a total of 12 touch-sensitive buttons. This Shield uses the MPR121 which is a great way to build simple capacitive touch interfaces using the I2C communication, and now it’s even easier to incorporate into your Arduino projects with the touch shield. An on-board logic level converter allows it to work with 5V and 3.3V Arduino boards and a LED to show you the power status. Compares to another touch shield that using digital pins, this shield uses fewer pins, which allows more pins left for other usages.
All the header pins are not soldered, so you can solder them by yourself to use it as Arduino “Shield”, or just solder the necessary pins(Power/GND/I2C/IRQ) to make this board more easy to implement anywhere.
Features
- 12 Channels totally;
- Build-On 9 keypad, 3 reserved pins for external usage.
- Power status indicator
- I2C Communication, use less Arduino pins.
Usage
Jargon buster
Plain-language definitions for the technical terms used above.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IRQ
- Short for interrupt request, a signal pin a device uses to get a microcontroller’s attention when something needs handling. It matters here because I2C communication with the sensor requires connecting the IRQ pin to a suitable input pin.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
Find this product in
Brands
Sensors & Input
Related Tutorials
Free guides on learn.littlebird.com.au
