On-board Features of the Circuit Playground Express (CPX)
Table of contents
NeoPixels
NeoPixels are programmable chips that have three separate LED sources: one red, one blue and one green. Each of the color channels can be controlled over 256 levels of brightness, which means that over 16 million (\(256^3=16,777,216\)) colors can be selected.
Details of programming the NeoPixels on the Circuit Playground Express are provided on a separate page
Sensors
The Circuit Playground Express has the following on-board sensors, which are described on separate pages (click on the links).
- Motion sensor (LIS3DH triple-axis accelerometer)
- Temperature sensor (thermistor)
- Light sensor (phototransistor)
- Sound sensor (MEMS microphone)
Buttons
The Circuit Playground Express has a reset button and two momentary buttons for user input.
Slide Switch
The Circuit Playground Express has a two-position slide switch for user input.
Analog Output
The Circuit Playground Express has a small MEMS speaker. It also has a exposed pad connected to an internal digital to analog converter. The pad can be connected to an external speaker for playing sounds.