Adafruit 1602 8-Key Capacitive Touch Sensor Breakout - I2C or SPI

The Adafruit 8-Key Capacitive Touch Sensor Breakout gives any microcontroller with I2C the power of touch. Using the CAP1188 chip to handle the triggering and filtering of the capacitive touch sensors means the MCU can get on with more important tasks. This is a very capable chip with configurable sensitivity, automatic recalibration and individual thresholds for each touch pad. All very useful features which would be time consuming to implement yourself. Each touch channel has an LED attached that lights up when its sensor is touched, which is a nice feature when you are debugging your project. You can set the board to one of 5 x I2C addresses and attach up to 40 x sensors to one I2C bus. The touch pads can be as simple as a piece of copper foil attached to the board by a single wire.

Supplied as a fully assembled and tested board plus strips of 0.1in. header pins for you to solder on as required. Adafruit provide a free tutorial and software library to help get you started. The library is aimed at the Arduino but it's well laid out and should be simple to port to other microcontrollers.

* 8 x touch channels each with its own feedback LED * Multi-touch support * Press and hold feature for volume controls * Consumes 5µA in sleep mode and 50µA in standby mode * Communicate via I2C or SPI * Dimensions: 42 x 18mm (1.6 x 0.7in.) * Adafruit part no.: 1602

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