CircuitPython 7.2.0 Release Candidate 2 Released! @circuitpython

From the GitHub release page:

This is CircuitPython 7.2.0-rc.2, the second release candidate for CircuitPython 7.2.0. It is considered stable, but we want to give time for further testing before the final release of 7.2.0. (7.2.0-rc.1 was skipped due to a release error.)

Notable additions to 7.2.0 since 7.1.1

  • Continuing work on Raspberry Pi Broadcom board support.
  • Espressif ESP32-S3 and ESP32-C3 support, including BLE.
  • RP2040 PIO sideset support.
  • board.STEMMA_I2C() available on all boards with STEMMA connectors.
  • binascii.crc32().
  • vectorio.contains().
  • Turkish translation.

Download from

Firmware downloads are available from the downloads page on The site makes it easy to select the correct file and language for your board.


To install follow the instructions in the Welcome to CircuitPython! guide. To install the latest libraries, see this page in that guide.

Try the latest version of the Mu editor for creating and editing your CircuitPython programs and for easy access to the CircuitPython serial connection (the REPL).

Port status

CircuitPython has a number of “ports” that are the core implementations for different microcontroller families. Stability varies on a per-port basis. As of this release, these ports are consider stable:

  • atmel-samd: Microchip SAMD21, SAMx5x
  • cxd56: Sony Spresense
  • espressif: Espressif ESP32-S2
  • nrf: Nordic nRF52840, nRF52833
  • raspberrypi: Raspberry Pi RP2040
  • stm: ST STM32F4 chip family

These ports are considered alpha and will have bugs and missing functionality:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-S3, ESP32-C3
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xx
  • stm: ST non-STM32F4 chip families

Changes since 7.2.0-rc.0

Fixes and enhancements

  • Fix REPL display on integrated displays when CircuitPython restarts. #6076, #6077. Thanks @kmatch98.

Port and board-specific changes

  • (none)

Individual boards

  • (none)

New boards since 7.1.1

  • Adafruit ESP32-S2 Camera: #5832. Thanks @ladyada.
  • Adafruit QT Py ESP32-S3 no PSRAM: #5832. Thanks @ladyada.
  • AIThinker ESP32-C3S-Kit-2M: #6032. Thanks @prplz.
  • Diodes Delight Piunora. #5819. Thanks @tannewt.
  • Espressif ESP32-C3 DevKitM-1. #5885. Thanks @tannewt.
  • Espressif ESP32-S2 DevKitC-1-NR42. #5998. Thanks @anecdata.
  • Espressif ESP32-S3 Box. #5691, #5674, #5661. Thanks @jepler.
  • Espressif ESP32-S3 DevKit C-1-nopsram. #5691, #5655. Thanks @jepler.
  • Espressif ESP32-S3 DevKit C-1. #5655. Thanks @jepler.
  • HiiBot IoTs2. #6058. Thanks @Neradoc.
  • JPConstantineau BlueMicro833. #5664. Thanks @jpconstantineau.
  • JPConstantineau PyKey 18 Numpad. #5699. Thanks @jpconstantineau.
  • JPConstantineau PyKey 44 Ergo. #5699. Thanks @jpconstantineau.
  • JPConstantineau PyKey 60. #5699. Thanks @jpconstantineau.
  • JPConstantineau PyKey 87 TKL. #5699. Thanks @jpconstantineau.
  • Oak Development Technologies Cast-Away RP2040. #5666. Thanks @skerr92.
  • Pimoroni Tiny 2040 (2MB). #5684. Thanks @ZodiusInfuser.
  • Raspberry Pi Zero W. #5800, #5819. Thanks @tannewt.
  • Raspberry Pi Zero. #5800, #5819. Thanks @tannewt.
  • Seeeduino Xiao RP2040. #5696, #5519. Thanks @jpconstantineau and @prplz.
  • Seeeduino Xiao nRF52840. #5753. Thanks @0hotpotman0.
  • SparkFun Thing Plus STM32. #5597. Thanks @NathanY3G.
  • Unexpected Maker FeatherS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
  • Unexpected Maker ProS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
  • Unexpected Maker TinyS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
  • Waveshare RP2040-Zero. #5820. Thanks @CharString.

Documentation changes

  • (none)

Build and infrastructure changes

  • Use git describe --long when generating stubs. #6064. Thanks @dhalbert.

Translation additions and improvements

  • (none)

Known issues

  • See for other issues, including issues still to be addressed for 7.x.x.


Thank you to all who used, tested, and contributed, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

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