Adafruit Industries

Notes document is available here, with timecodes: https://github.com/adafruit/adafruit-circuitpython-weekly-meeting/blob/main/2026/2026-09-14.md

Join here for the chat all week: http://adafru.it/discord

The CircuitPython Weekly normally is held at 2pm US ET/11am us PT on Mondays. Check the #circuitpython-dev channel on Discord for notices of change in time and links to past meetings. Meeting times are also available in iCal format using the following link: https://raw.githubusercontent.com/adafruit/adafruit-circuitpython-weekly-meeting/master/meeting.ical.

CircuitPython development is sponsored by Adafruit. Please support them by purchasing hardware from https://adafruit.com.

Reminders: Podcast available on most services. Let us know if we’re missing some.

Visit the Adafruit shop online - http://www.adafruit.com

0:00 Housekeeping

1:52 Community News

5:05 State of CircuitPython, Libraries & Blinka

14:29 Hug Reports

19:58 Status Updates

32:07 In the Weeds

36:04 Wrap-up

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LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

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We got tired of using crummy USB hubs. Do they have individual port control? Maybe...maybe not! Do they have voltage and current monitoring? Never! What about XH or USB A for fixed connections that don't flop out? I2C control or EEPROM for configuration? Proper protected input ports with 5V overcurrent/overvoltage protection? ESD and overcurrent protection on each port? YES YES YES, it's time for PORT AUTHORITY, the stackable USB hub we always wanted! Starring the USB2514 hub, TPS259470A eFuse, and TPS2117 power mux to select between USB self- or external power.

Visit the Adafruit shop online - http://www.adafruit.com

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LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

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Join Scott as he discusses dynamic pin muxing in the Zephyr port. For example, pin muxing allows user code to use any I2C on any capable pins. He'll also answer any questions folks have.

Visit the Adafruit shop online - http://www.adafruit.com

Thanks to dcd for timecodes

0:00 Getting started

0:37 join the discord #live-broadcast-chat channel on http://adafru.it/discord

1:00 Scott welcomes you to the deep dive, working for open source hardware company http://www.adafruit.com/

1:38 Circuit Python (CP) runs on microcontrollers

2:52 "Snake Acceleration", (using micropyton v1.28 native modules to speed things up) in CP v10.4

5:10 The new bootloader hopefully will go into CP v10.4 also

6:00 Github adafruit/circuitpython insights

6:30 Picogame and CI speedup

7:45 CP is a fork of micropython

8:54 Zephyr Pin Muxing / github zephyr "Introduce Dynamic pinctrl" #18255

9:19 Zephyr device tree file zephyrproject-rtos / zephyr / boards / adafruit / feather_nrf52840 dtsi example

12:20 CP allows specifying pins at run time ( https://learn.adafruit.com/circuitpython-essentials/circuitpython-i2c )

13:30 Goal is to get zephyr port to allow dynamic pin control

14:20 nRF54LM20 datasheet

16:34 iMX RT1011 adafruit.com/product/4950 pin names, mapped to

17:07 main guide ( learn.adafruit.com/adafruit-metro-m7-with-airlift )

17:27 Follow D10 to cpu on fab print https://learn.adafruit.com/assets/119301

17:50 schematic trace D10 net name to GPIO_06 on iMX RT1010 https://learn.adafruit.com/assets/119300

19:20 pins.c in board folder

20:39 i.MX RT1010 datasheet block diagram / IOMUX / pin muxing background

26:28 down in the weeds with the i.MX RT1010 processor reference manual

28:55 Chapter 10-12 IOMUX Controller (Port / Pin / Pad )

30:00 Intel 8080 die shot - example ioring / pad

30:50 RT1011 IORING pad and IOMUX

32:39 IOMUXC functional description / peripheral to pad muxing

35:19 GPIOMUX diagram and scheme

36:40 GPIO pad structure

38:30 settings to connect function to chips pin, and board pin

39:30 github adafruit circuitpython / ports / mimxrt10xx / common-hal / busio / I2C.c

40:50 common_hal_busio_i2c_construct() parameters

41:00 #if CIRCUITPY_REQUIRE_I2C_PULLUPS and "No pull up found" exception

42:11 searching the mcu_i2c sda and scl lists

43:30 refer to datasheet

43:23 and lists in periph.c

45:17 goals for zephyr

46:36 compare to nRF54LM20A data sheet

53:17 peripher and subsystem assignment 8.9.4 ( Nordic PSEL )

54:30 dynamic_bus.h dynamic_bus_i2c_allocate(), spi, and uart API

57:54 dynamic_bus_gpio.c implementation

58:45 zephyr dts structures

59:41 stm32c0 arm m0 small package wrinkle

1:02:43 alternate function mapping

1:03:47 wrap up pin muxing background

1:04:00 discord ( see above ) live all week, also, deep divers role

1:05:21 see you next week

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LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

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Meet CircuitPython Turbo from Adafruit. CircuitPython Turbo gives the busiest parts of your Python project a faster way to run. "Turbo" translated selected Python functions into instructions the chip can execute directly, while Python keeps handling the rest. In one recorded test, a Mandelbrot calculation ran nearly 20 times faster on an Adafruit Metro RP2040. That does not make everything 20 times faster, but it can free up time for animation, graphics, and responding to input. Explore real hardware demos, see how it works, and try it yourself. Keep the readable code, speed up the demanding parts, and build something worth watching. Go Blinka!

Speed off into the project with the Adafruit Learning guide:

https://learn.adafruit.com/circuitpython-turbo?view=all

CircuitPython Turbo uses mpy-cross to compile selected Python functions ahead of time into architecture-specific native .mpy modules. Keep code.py as the coordinator while imported modules handle computational hotspots. Native mode retains Python objects; Viper supports machine-word integers and pointers for tighter loops. On Adafruit Metro RP2040, a fixed-point 160 × 120 Mandelbrot benchmark dropped from 8,335.3 ms as bytecode to 422.9 ms with Viper: 19.71× faster computation. The source remains available as an import-time fallback when compiled modules are absent. Explore the toolchain, compare outputs, and measure your complete application: faster arithmetic does not eliminate display, storage, or communication delays.

Same snake, less waiting 🐍

#circuitpython #adafruit #python

This week @adafruit Pedro is back with progress on the e-ink display project. Noe is in the progress of writing up a guide for the Franky candy dispenser project. This weeks time lapse features a smiley stitched mask.

Feather RP2040 PropMaker:

https://www.adafruit.com/product/5768

LED Glasses Starter Kit

https://www.adafruit.com/product/5255

Timelapse Tuesday:

Smiley Stitched Mask By ONI.FORGE

https://makerworld.com/en/models/1902039-smiley-tpu-stitched-fabric-horror-halloween-mask

https://youtu.be/KXWCsn7SEzU

#newproducts

JP’s Product Pick of the Week 9/8/26 RECAP

Adafruit 2.23" Monochrome OLED Bonnet for Raspberry Pi

https://www.adafruit.com/product/4567

Visit the Adafruit shop online - http://www.adafruit.com

-----------------------------------------

LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

-----------------------------------------

#newproducts

JP’s Product Pick of the Week 9/8/26

Adafruit 2.23" Monochrome OLED Bonnet for Raspberry Pi

https://www.adafruit.com/product/4567

Deep discount during livestream

Visit the Adafruit shop online - http://www.adafruit.com

-----------------------------------------

LIVE CHAT IS HERE! http://adafru.it/discord

Adafruit on Instagram: https://www.instagram.com/adafruit

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

-----------------------------------------

Visit the Adafruit shop online - http://www.adafruit.com

-----------------------------------------

LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

-----------------------------------------

Notes document is available here, with timecodes: https://github.com/adafruit/adafruit-circuitpython-weekly-meeting/blob/main/2026/2026-09-08.md

Join here for the chat all week: http://adafru.it/discord

The CircuitPython Weekly normally is held at 2pm US ET/11am us PT on Mondays. Check the #circuitpython-dev channel on Discord for notices of change in time and links to past meetings. Meeting times are also available in iCal format using the following link: https://raw.githubusercontent.com/adafruit/adafruit-circuitpython-weekly-meeting/master/meeting.ical.

CircuitPython development is sponsored by Adafruit. Please support them by purchasing hardware from https://adafruit.com.

Reminders: Podcast available on most services. Let us know if we’re missing some.

0:00 Housekeeping

01:47 Community News

03:59 State of CircuitPython, Libraries & Blinka

11:12 Hug Reports

14:09 Status Updates

19:30 In the Weeds

26:07 Wrap-up

Visit the Adafruit shop online - http://www.adafruit.com

-----------------------------------------

LIVE CHAT IS HERE! http://adafru.it/discord

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/

-----------------------------------------

Every week we'll 3D print designs from the community and showcase slicer settings, use cases and of course, Time-lapses! This Week:

Smiley Stitched Mask

By ONI.FORGE

makerworld.com/en/models/1902039-smiley-tpu-stitched-fabric-horror-halloween-mask

Bambu X1C

PolyMaker PLA

10hr 28mins

X:155 Y:146 Z:166mm

.2mm layer / .4mm Nozzle

10% Infill / 1mm Retraction

200C / 60C

164g

230mm/s

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LIVE CHAT IS HERE! http://adafru.it/discord

Adafruit on Instagram: https://www.instagram.com/adafruit

Shop for parts to build your own DIY projects http://adafru.it/3dprinting

3D Printing Projects Playlist:

https://www.youtube.com/playlist?list=PLjF7R1fz_OOWD2dJNRIN46uhMCWvNOlbG

3D Hangout Show Playlist:

https://www.youtube.com/playlist?list=PLjF7R1fz_OOVgpmWevin2slopw_A3-A8Y

Layer by Layer CAD Tutorials Playlist:

https://www.youtube.com/playlist?list=PLjF7R1fz_OOVsMp6nKnpjsXSQ45nxfORb

Timelapse Tuesday Playlist:

https://www.youtube.com/playlist?list=PLjF7R1fz_OOVagy3CktXsAAs4b153xpp_

Connect with Noe and Pedro on Social Media:

Noe's Twitter / Instagram: @ecken

Pedro's Twitter / Instagram: @videopixil

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Visit the Adafruit shop online - http://www.adafruit.com/?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting

Subscribe to Adafruit on YouTube: http://adafru.it/subscribe

Adafruit Monthly Deals & FREE Specials

https://www.adafruit.com/free?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting

Join our weekly Show & Tell on G+ Hangouts On Air: http://adafru.it/showtell

Watch our latest project videos: http://adafru.it/latest?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting

3DThursday Posts: https://blog.adafruit.com/category/3d-printing?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting

New tutorials on the Adafruit Learning System: http://learn.adafruit.com/?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting

Music by Dan Q https://soundcloud.com/adafruit

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