Circuit Playground Express 4-H
The Circuit Playground Express is Adafruit’s flagship educational board designed for CircuitPython. It brings the “batteries included” approach includes an assortment of functionality built-in. It is one of the best beginner boards available. If you are new to hardware, then this is a great board to start with. This version includes 4-H branding approved by the USDA.
Here’s some of the great goodies baked in to each Circuit Playground Express:
- 10 x mini NeoPixels, each one can display any 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). Can also act as a color 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, labeled 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 analog inputs, multiple PWM output
- 7 pads can act as capacitive touch inputs and the 1 remaining is a true analog output
- Green “ON” LED so you know its powered
board.D13LED for basic blinking
- Reset button
- ATSAMD21 ARM Cortex M0 Processor, running at 3.3V and 48MHz
- 2 MB of SPI Flash storage, used to store code and libraries.
- MicroUSB port for programming and debugging
- USB port can act like serial port, keyboard, mouse, joystick or MIDI!
- Programmable in multiple environments including Microsoft MakeCode, CircuitPython, Code.org CSD, and the Arduino IDE
- Circuit Playground Express Overview
- 4-H STEMLab Curriculum: Circuit Playground Express Soil Moisture Sensor
- Soil Moisture Sensor Tutorial: YouTube Introduction and Adafruit Online Tutorial
- Adafruit Learning System tutorials on the Circuit Playground Express
- Microsoft Tutorials and Projects with MakeCode
- Adafruit Circuit Playground Express board (4-H Green with logo)
- Circuit Playground Express board (black)
- Adafruit Circuit Playground Express base kit (black)
- Shop4-H.org base kit
Other 4-H Links
- Adafruit attends the 2018 National 4-H Youth Maker Summit in Chevy Chase, Maryland
- Microsoft teams with Brown County 4-H - WBAY video (YouTube)
- The Adafruit Connection to 4-H: 4-H, electronics, makers, holland lops, silkie chickens & more
This is the latest stable release of CircuitPython that will work with the Circuit Playground Express 4-H.
Start here if you are new to CircuitPython.
Built-in modules available: _pixelbuf, analogio, audiobusio, audiocore, audioio, bitbangio, board, busio, countio, digitalio, errno, gamepad, math, microcontroller, neopixel_write, nvm, os, pulseio, pwmio, random, re, rotaryio, rtc, storage, struct, supervisor, time, touchio, usb_hid, usb_midi
This is the latest unstable release of CircuitPython that will work with the Circuit Playground Express 4-H.
Unstable builds have the latest features but are more likely to have critical bugs.
Built-in modules available: adafruit_bus_device, adafruit_pixelbuf, analogio, atexit, audiobusio, audiocore, audioio, bitbangio, board, busio, countio, digitalio, errno, getpass, math, microcontroller, neopixel_write, nvm, onewireio, os, pulseio, pwmio, rainbowio, random, rotaryio, rtc, storage, struct, supervisor, time, touchio, traceback, usb_cdc, usb_hid, usb_midi
Every time we commit new code to CircuitPython we automatically build binaries for each board and language. The binaries are stored on Amazon S3, organized by board, and then by language. Try them if you want the absolute latest and are feeling daring or want to see if a problem has been fixed.
All previous releases are listed on GitHub, with release notes, and are available for download from Amazon S3. They are handy for testing, but otherwise we recommend using the latest stable release. Some older GitHub release pages include the same binaries for downloading. But we have discontinued including binaries as assets on newer release pages because of the large number of files for each release.
Install/Repair UF2 Bootloader
Latest version: v3.13.0
The bootloader allows you to load CircuitPython, Makecode, and Arduino programs. The bootloader is not CircuitPython.
Update UF2 Bootloader
Latest version: v3.13.0
The bootloader allows you to load CircuitPython, Makecode, and Arduino programs. The bootloader is not CircuitPython. You can check the current version of your bootloader by looking in the INFO_UF2.TXT file when the BOOT drive is visible (FEATHERBOOT, CPLAYBOOT, etc.).
To update, first save the contents of CIRCUITPY, just in case. Then double-click the reset button to show the BOOT drive. Drag the update-bootloader .uf2 file to the BOOT drive. Wait a few tens of seconds for the bootloader to update; the BOOT drive will reappear. Check INFO_UF2.TXT to verify that the bootloader version has been updated. Then you will need to reload CircuitPython.