Datasheet

Features of the Circuit Playground Express:
 10 x mini NeoPixels, each one can display any colour
 1 x Motion sensor (LIS3DH triple-axis accelerometer with tap
detection, free-fall detection)
 1 x Temperature sensor (thermistor)
 1 x Light sensor (phototransistor). Can also act as a colour sensor
and pulse sensor.
 1 x Sound sensor (MEMS microphone)
 1 x Mini speaker with class D amplifier (7.5mm magnetic
speaker/buzzer)
 2 x Push buttons, labelled A and B
 1 x Slide switch
 Infrared receiver and transmitter - can receive and transmit any
remote control codes, as well as send messages between Circuit
Playground Expresses. Can also act as a proximity sensor.
 8 x alligator-clip friendly input/output pins
 Includes I2C, UART, 8 pins that can do analogue inputs, multiple
PWM output
 7 pads can act as capacitive touch inputs and the 1 remaining is a
true analogue output
 Green "ON" LED so you know it's powered
 Red "#13" LED for basic blinking
 Reset button
 ATSAMD21 ARM Cortex M0 Processor, running at 3.3V and 48MHz
 2 MB of SPI Flash storage, used primarily with CircuitPython to
store code and libraries.
 MicroUSB port for programming and debugging
 USB port can act like serial port, keyboard, mouse, joystick or MIDI!
Outer Diameter: ~50.6mm / ~2.0"
Weight: 8.9g