In the kickoff of season 6, John Fletcher joins the show. John shares how he ported CircuitPython to web assembly, how it works, and how using Claude Code helped.

Follow the show on Mastodon [https://www.circuitpythonshow.com/@circuitpythonshow/follow] and Bluesky [https://bsky.app/profile/circuitpythonshow.com].

Show Notes

00:00 Intro

00:23 John’s start with computers

4:07 John’s Discord nickname

5:05 CircuitPython and web assembly

6:43 How CircuitPython works in the browser

7:46 Advantages to using CircuitPython in the browser

9:25 Windows Subsystem for Linux

10:25 Using Claude Code

10:49 Managing the prompts

12:48 How to test CircuitPython in the browser

 * The CircuitPython web-editor with web assembly [https://github.com/johnnohj/web-editor]

13:33 Where to learn more

 * John’s GitHub repositories [https://github.com/johnnohj]

John Fletcher

In the final episode of season 5, Justin Myers joins the show. Justin shares how he created the new connectionmanager library for networking in CircuitPython.

Follow the show on Mastodon [https://www.circuitpythonshow.com/@circuitpythonshow/follow] or Bluesky [https://bsky.app/profile/circuitpythonshow.com] for news of when the show will return.

Show Notes

00:00 Intro

00:21 Justin’s start with computers

1:11 Discovering electronics

2:15 Discovering CircuitPython

3:02 ConnectionManager

4:55 How does connectionmanager work?

7:10 What were the challenges in creating connectionmanager?

8:35 Software testing framework

11:21 Which board?

13:25 Wrap-up

Justin Myers

Cooper Dalrymple, who recently was a guest on the Audio Effects Panel Discussion, joins the show. He shares how he got started with electronics, his music background, what’s next for CircuitPython’s audio effects, and more.

00:00 Welcome

00:26 Cooper’s start with computers and electronics

1:31 Discovering CircuitPython

5:57 Cooper’s music background

8:18 Designing hardware

13:26 Advantages between CircuitPython and Arduino

19:03 What’s next in audio effects?

21:41 Learn more about Cooper [https://dcdalrymple.com]

 * Tindie Store [https://www.tindie.com/stores/relic/]
 * YouTube [https://www.youtube.com/@relic985]
 * GitHub [https://github.com/relic-se]

23:02 Which board?

24:04 Wrap-up

Cooper Dalrymple

Tim Cocks, better known as foamyguy in the Adafruit community, shares his experiences in designing games for CircuitPython. Tim and Paul also discuss some recent games Tim has worked on.

00:00 Intro

00:16 Tim’s start with computers

1:48 Discovering CircuitPython

8:16 Challenges designing games for microcontrollers

13:16 1D Chomper [https://learn.adafruit.com/1d-chomper-tabletop-arcade-game/overview]

15:44 Blinka Says [https://learn.adafruit.com/blinka-says-tabletop-arcade-game/overview]

18:58 Karel the Robot [https://learn.adafruit.com/karel-the-robot-in-circuitpython]

23:24 Which microcontroller?

25:42 Wrap-up

Designing Games for CircuitPython with Tim "foamyguy" Cocks 

Cooper Dalrymple, Jeff Epler, Mark Komus, and Tod Kurt join the show to discuss the new audio effects available in CircuitPython.

00:00 Welcome

00:19 Mark’s inspiration for adding audio effects [https://github.com/adafruit/circuitpython/issues/8974]

1:46 Mark’s drum gist

4:23 The new audio effects available in CircuitPython

8:02 LFOs

10:30 Synthio vs Audio Effects

11:36 MP3 Bass and Treble Control

12:48 The RP2350

17:34 RP2350 vs RP2040

18:11 Audio on Espressif

19:50 Guitar pedals

26:59 Future projects

29:59 CircuitPython Karaoke

30:42 CircuitPython Audio Effects Tricks

32:38 Wrap-up

Audio Effects Panel Discussion

Liz Clark and Noe Ruiz join the show and share how they collaborate on projects, where they get inspiration, and share some of their favorite projects.

Follow the show on Mastodon [https://www.circuitpythonshow.com/@circuitpythonshow/follow] or Bluesky [https://bsky.app/profile/circuitpythonshow.com].

Show Notes

00:00 Intro

00:21 Project inspirations

4:17 Iterating on a project

6:09 Working together to improve a project

8:01 Noe’s favorite project - Adabot [https://learn.adafruit.com/adabot-rp2040]

9:41 Liz’s favorite project - the Midi Fighter [https://learn.adafruit.com/raspberry-pi-pico-led-arcade-button-midi-controller-fighter]

11:00 The MX Guitar [https://learn.adafruit.com/guitar-synth-with-circuitpython-synthio]r

15:12 The The CircuitPython Motorized Camera Slider [https://learn.adafruit.com/circuitpython-motorized-camera-slider]

17:09 The Jack-o-lantern PropMaker [https://learn.adafruit.com/propmaker-jack-o-lantern]

19:24 The NFC Rapsberry Pi Media Player [https://learn.adafruit.com/nfc-raspberry-pi-media-player]

24:02 The RP2350 Audio Reactive Video Synth [https://learn.adafruit.com/feather-rp2350-audio-reactive-video-synth]

29:18 Wrap-up

Project Collaboration with Liz Clark and Noe Ruiz

Jan Goolsbey and Tod Kurt return to the show and share their experience in writing libraries and drivers for the CircuitPython Community Bundle.

Follow the show on Mastodon [https://www.circuitpythonshow.com/@circuitpythonshow/follow] or Bluesky [https://bsky.app/profile/circuitpythonshow.com] and join our newsletter [https://buttondown.com/circuitpythonshow].

Guests:

 * Jan Goolsbey - Jan’s GitHub repositories [https://github.com/CedarGroveStudios]
 * Tod Kurt Tod’s GitHub repositories [https://github.com/todbot]

00:00 Welcome

00:18 The CircuitPython Community Bundle

2:01 When is your code is ready for the bundle?

2:50 Creating a library using cookiecutter

 * Creating and sharing a CircuitPython library Learn Guide [https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library]

9:01 Documentation requirements

11:15 Submitting a library to the Community Bundle

14:22 Circup

15:37 Advice for someone sharing their first library

19:03 Can a library move to the Adafruit CircuitPython Bundle?

22:46 Licensing

24:10 Libraries Jan and Tod have written

 * PaletteFader [https://github.com/CedarGroveStudios/CircuitPython_PaletteFader]
 * RuhRohRotaryIO [https://github.com/todbot/CircuitPython_RuhRohRotaryIO]

29:22 Hidden gems in the Community Bundle

 * Atari Punk Console [https://github.com/CedarGroveStudios/CircuitPython_PunkConsole]

34:17 Wrap-up

Writing a CircuitPython Library for the Community Bundle

CircuitPython core developer Dan Halbert joins the show and shares how to build CircuitPython from source.

Dan was previously a guest on episode 28 [https://www.circuitpythonshow.com/@circuitpythonshow/episodes/dan-halbert].

Follow the show on Mastodon [https://www.circuitpythonshow.com/@circuitpythonshow/follow] or Bluesky [https://bsky.app/profile/circuitpythonshow.com] and join our newsletter [https://buttondown.com/circuitpythonshow].

00:00 Intro

00:24 When would someone want to build CircuitPython?

2:23 The pre-requisites for building CircuitPython and the Building CircuitPython Learn Guide [https://learn.adafruit.com/building-circuitpython]

5:15 Building for different hardware ports using git submodules

6:46 Usage of Python in the build process and virtual environments

9:11 Asking for help in the Adafruit Discord

9:34 Adding a new board to CircuitPython and How to Add a Board Learn Guide [https://learn.adafruit.com/how-to-add-a-new-board-to-circuitpython]

13:58 Obtaining a vendor ID and product ID

16:49 Adding the board to circuitpython.org and its Learn Guide [https://learn.adafruit.com/how-to-add-a-new-board-to-the-circuitpython-org-website]

18:13 Advice for building CircuitPython (XKCD [https://xkcd.com/1987/])

21:10 Wrap-up

Building CircuitPython with Dan Halbert

Welcome to a new episode of The CircuitPython Show! Bradán Lane joins the show for a second time and shares his process, tips, and tricks for designing a PCB that uses CircuitPython.

We’re now on Bluesky! [https://bsky.app/profile/circuitpythonshow.com]

00:00 Welcome

 * Bradán Lane homepage [https://bradanlane.com]
 * Bradán on The CircuitPython Show episode 19 [https://www.circuitpythonshow.com/@circuitpythonshow/episodes/bradan-lane]

00:24 Recommended tools

 * EasyEDA [https://easyeda.com]
 * KiCad [https://www.kicad.org]

2:54 Where to start when designing a board?

4:24 Finding open source hardware examples and schematics

 * Adafruit [https://www.adafruit.com]
 * Solder Party [https://www.solder.party]

7:02 Designing a board to support CircuitPython

9:00 The board layout and its constraints

12:28 Creating a feature board aka the kitchen sink

14:12 Picking out parts and components

17:14 Placing parts on the board

19:19 Advice for new board designers

20:37 The DC NextGen Graffiti Badge [https://dcnextgen.org/badge/workshop0.html]

25:28 Getting CircuitPython to run on a board

29:39 Wrap-up

Designing a PCB with Bradán Lane

Jan Goolsbey joins the show for his second visit. He shares how he built a weather monitoring system using sensors, weather APIs, display devices, CircuitPython, and Adafruit IO.

Jan was previously a guest on episode 33 [https://www.circuitpythonshow.com/@circuitpythonshow/episodes/jan-goolsbey].

The CircuitPython Show is now on Bluesky! [https://bsky.app/profile/circuitpythonshow.com]

Show Notes

00:00 Intro

00:16 Welcome Jan

00:28 The start of the weather system

2:09 How to solve the corrosion problem

4:50 Internet connected sensors with a PyPortal and Adafruit IO

7:43 Adding external weather conditions from an API to Adafruit IO

9:47 Evolving into a combined weather system

12:40 Discovering Apple WeatherKit integration in Adafruit IO+ [https://adafruit-playground.com/u/CGrover/pages/aio-weather-a-premium-alternative-for-local-observations]

14:00 Version 1 [https://adafruit-playground.com/u/CGrover/pages/display-aio-local-weather-conditions-matrixweather-system] of the weather system architecture

14:52 What were the challenges in the new architecture?

17:20 Multiple display devices and Adafruit IO throttling

20:55 Version 2 architecture: Remix [https://adafruit-playground.com/u/CGrover/pages/remix-cedar-grove-weather-architecture-v2-0]

22:34 The user interfaces

27:09 What’s next?

29:09 Wrap-up

Correction: Jan referred to Jerry Needell as working at Apple instead of Adafruit.

Follow Jan on Bluesky [https://bsky.app/profile/cedargrovestudios.bsky.social].

View Jan’s projects on the Adafruit Playground [https://adafruit-playground.com/u/CGrover].

Building a weather system with Jan Goolsbey

An independent podcast with the people in and around CircuitPython. Created and hosted by Paul Cutler.