3333: Circuit Playground Express - ATSAMD21

Summary

Circuit Playground Express is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to program.

Start your journey with Microsoft MakeCode block-based or Javascript programming. Then, you can use the same board to try CircuitPython, with the Python interpreter running right on the Express. As you progress, you can advance to using Arduino IDE, which has full support of all the hardware down to the low level, so you can make powerful projects.You can even use code.org CS Discoveries to learn all about coding right in your browser!

Because you can program the same board in 4 different ways - the Express has great value and re-usability. From beginners to experts, Circuit Playground Express has something for everyone. If you are looking for our original, Arduino-only Circuit Playground, check out the Circuit Playground Classic.

The board is round and has alligator-clip pads around it so you don't have to solder or sew to make it work. You can power it from USB, a AAA battery pack, or with a Lipoly battery (for advanced users). Circuit Playground Express has built-in USB support. Built in USB means you plug it in to program it and it just shows up, no special cable or adapter required. Just program your code into the board then take it on the go!

  • 10 x mini NeoPixels, each one can display any rainbow color

  • 1 x Motion sensor (LIS3DH triple-axis accelerometer with tap detection, free-fall detection)

  • 1 x Temperature sensor (thermistor)

  • 1 x Light sensor (phototransistor)

  • 1 x Sound sensor (MEMS microphone)

  • 1 x Mini speaker (magnetic buzzer)

  • 2 x Push buttons, left and right

  • 1 x Slide switch

  • 8 x alligator-clip friendly input/output pins

  • Includes I2C, UART, and 4 pins that can do analog inputs/PWM output

  • All 8 pads can act as capacitive touch inputs

  • Green "ON" LED so you know its powered

  • Red "#13" LED for basic blinking

  • Reset button

Specifications

Manufacturer Adafruit Industries LLC
Category Open Source MCU Platforms
Eval Board Part Number 1528-2280-ND
Eval Board Supplier Adafruit Industries LLC
IDE Arduino IDE, with Software Add-on
CircuitPython
MakeCode
Speed 48 MHz
Bits 32 Bit
Memory, Flash/RAM 2 MB / 32 kB
Digital I/O 8 I/O, 5 PWM
Interface I²C x1
IrDA
UART x1
USB Device
Analog Outputs (DACs) 1 x 10 Bit
Analog Inputs (ADCs) 8 x 12 Bit
DMA Channels 0
Features 10 x NeoPixel Output
Accelerometer, 3-Axis
Arduino UNO Form Factor Compatible
Light Sensor
Microphone
Speaker
Temperature Sensor
Timers
Radio -
Interrupt Pins 8
I/O Voltage 3.3 V
Voltage In 3 ~ 6 V
Touch Sensing Pins 7
Program/Debug Interface USB Type-Micro B
Area 2026² mm, 3.14² In
Main I.C. Base Part ATSAMD21
Design Author Adafruit
Date Created By Author 2017-10
Date Added To Library 2019-08

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