Datasheet

Motion Sensor

We can sense motion with an accelerometer. This

sensor detects

acceleration

which means it can be used

to detect when its being moved around, as well as

gravitational pull in order to detect orientation.

The LIS3DH 3-axis XYZ accelerometer is in the dead

center of the board and you can use it to detect tilt,

gravity, motion, as well as 'tap' and 'double tap' strikes

on the board. The LIS3DH is connected to an internal

I2C pinset (not the same as the ones on the pads) and

has an optional interrupt output on digital pin #36

Capacitive Touch

The chip in the CPX has a built in ability to perform

capacitive touch readings. This is a great way to sense

human touch without additional components. Even

animals will work if its directly touching their skin!

On the Express you get seven capacitive touch pads. All

pads but A0 can do it. (A0 is used for the audio output

pad so cannot do captouch). Since we use the chip's

built-in hardware support, you will use the provided

MakeCode/Arduino/CircuitPython library code to

perform the readings

Switches & Buttons