This is CircuitPython 7.3.0-rc.2, the third release candidate for CircuitPython 7.3.0. It is considered stable, and is available as a release candidate for testing before the final release of 7.3.0.
Notable changes to 7.3.0 since 7.2.5
Experimental mDNS support.
USB to to Serial/JTAG support for REPL on appropriate boards.
Initial experimental USB host support.
Merge MicroPython 1.18 changes.
Preliminary zlib module support. gzip module will be added later.
RP2040 PIO: Background write to a PIO state machine. Looping is possible.
RP2040 PIO: wrap and wrap_target support.
keypad: scan keystates immediately on creation.
Improve NeoPixel timings on many ports, to handle a wider range of devices.
Add floppyio, used in conjunction with a library.
Allow TileGrid bitmap to be changed.
Module support matrix includes frozen modules for each board.
f-strings available in all builds.
Download from circuitpython.org
Firmware downloads are available from the downloads page on circuitpython.org. The site makes it easy to select the correct file and language for your board.
Installation
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).
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 RT10xxx
stm: ST non-STM32F4 chip families
Changes since 7.3.0-rc.1
Fixes and enhancements
Turn on f-strings for all builds. #6415. Thanks @dhalbert.
Port and board-specific changes
Broadcom
Espressif
i.MX
nRF
RP2040
SAMx
STM
Individual boards
Documentation changes
Build and infrastructure changes
Translation additions and improvements
New boards since 7.3.0-rc.1
Known issues
See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for:
Thank you to all who used, tested, and contributed since 7.3.0-rc.1, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: Milton Survival Issue: Two New Python Versions, Visualize WiFi and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey
