Scott Shawcroft, CircuitPython's project lead, returns to the show. Paul and Scott discuss CircuitPython's move to Zephyr, a look back at ten years of CircuitPython, what the future might hold, and more.

Follow the show on Bluesky [https://bsky.app/profile/circuitpythonshow.com] or follow Paul on Bluesky [https://bsky.app/profile/paulcutler.org] or Mastodon [https://hachyderm.io/deck/@prcutler)].

Support the show! Join the Supporter tier and get early access to episodes, exclusive content, and more. Visit CircuitPythonshow.com/Support [https://circuitpythonshow.com/support] to learn more.

Show Notes

00:00 Intro

00:39 CircuitPython and Zephyr

2:45 How is the progress moving CircuitPython to Zephyr?

3:30 How are LLMs helping?

7:08 Ten Years of CircuitPython

9:54 The Fruit Jam and the future of CircuitPython

14:03 RP2350 Gameboy Cartridge

18:13 Running a CircuitPython game on the cart

19:48 Wrap-up

Scott Shawcroft Part 2

Tod Kurt returns to the show and shares how to build custom CircuitPython firmware using GitHub Actions. Tod also shares SerialPlotster and his latest hardware creation.

Show Notes

00:57 Using GitHub Actions to build CircuitPython

3:51 CircuitPython Custom on GitHub [https://github.com/todbot/CircuitPython_Custom] repository

 * CircuitPython Custom configuration web page [https://todbot.github.io/CircuitPython_Custom/]


9:24 The CLI display

10:37 Adding custom modules

11:42 How to run CircuitPython Custom

14:34 SerialPlotster [https://github.com/todbot/SerialPlotster]

 * Download [https://github.com/todbot/SerialPlotster/releases/tag/0.3]


19:32 New hardware?

20:40 Creating synth engines

21:32 Wrap-up

 * todbot.com [https://todbot.com]
 * The Bootloader [https://thebootloader.net]


Tod Kurt Part 3

Show Notes

1:22 Michael’s start with electronics

2:38 ScrollKit

 * Scrollkit.dev [https://scrollkit.dev]


5:33 How ScrollKit works

7:08 Scrollkit’s hardware

8:09 How over-the-air-updates work

8:49 Graphics in ScrollKit

10:42 Challenges to overcome

15:09 The ScrollKit simulator

16:35 Theme Park Waits

17:33 What’s next for ScrollKit?

18:18 Which board?

18:51 Wrap-up

 * Michael’s homepage [https://czei.org]


Michael Czeiszperger

Michael “T-Rex” Kadie joins the show and discusses the T-Rex Talk family of assistive devices built with CircuitPython.

1:25 Michael’s start with computers

1:56 How Michael started building communication devices in the 90s

4:46 The T-Rex Talk 3.0

8:55 Using AI to help

9:58 Using the Fruit Jam as an assistive device

13:27 The training game

13:56 The Sip-N-Puff [https://www.tssfaa.com/sip-n-puff.html]

16:38 The CircuitPython reading light

17:07 Jay Leno’s antique electric car - with CircuitPython

21:21 Wrap-up

 * Michael’s website [https://www.tssfaa.com]
 * GitHub repository [https://github.com/mkadie/NeedsBoard]
 * YouTube channel [https://www.youtube.com/@but_Idigress]


Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Michael "T-Rex" Kadie

Michael “T-Rex” Kadie joins the show and discusses the T-Rex Talk family of assistive devices built with CircuitPython.

1:25 Michael’s start with computers

1:56 How Michael started building communication devices in the 90s

4:46 The T-Rex Talk 3.0

8:55 Using AI to help

9:58 Using the Fruit Jam as an assistive device

13:27 The training game

13:56 The Sip-N-Puff [https://www.tssfaa.com/sip-n-puff.html]

16:38 The CircuitPython reading light

17:07 Jay Leno’s antique electric car - with CircuitPython

21:21 Wrap-up

 * Michael’s website [https://www.tssfaa.com]
 * GitHub repository [https://github.com/mkadie/NeedsBoard]
 * YouTube channel [https://www.youtube.com/@but_Idigress]

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Tom Fox joins the show and shares his creation, the SPOKE board.

Show Notes

00:00 Intro

00:36 Tom’s start with computers and electornics

1:25 Discovering CircuitPython

2:31 The SPOKE board

 * SPOKE [https://www.spokeboard.com]


4:11 Whom is the SPOKE for?

5:38 The SPOKE Mini

7:25 What students have made with the SPOKE

9:15 What were the challenges bringing the SPOKE to life?

10:33 The SPOKE online editor

13:53 What’s next for SPOKE?

14:59 Where to learn more?

 * YouTube [https://www.youtube.com/@Spokeboard]
 * Instagram [https://www.instagram.com/spokeboard]
 * Tom’s home page [https://vulpeslabs.org]


15:26 How much does the SPOKE cost?

15:38 Which board?

16:22 Wrap-up

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Tom Fox

Tom Fox joins the show and shares his creation, the SPOKE board.

Show Notes

00:00 Intro

00:36 Tom’s start with computers and electornics

1:25 Discovering CircuitPython

2:31 The SPOKE board

 * SPOKE [https://www.spokeboard.com]

4:11 Whom is the SPOKE for?

5:38 The SPOKE Mini

7:25 What students have made with the SPOKE

9:15 What were the challenges bringing the SPOKE to life?

10:33 The SPOKE online editor

13:53 What’s next for SPOKE?

14:59 Where to learn more?

 * YouTube [https://www.youtube.com/@Spokeboard]
 * Instagram [https://www.instagram.com/spokeboard]
 * Tom’s home page [https://vulpeslabs.org]

15:26 How much does the SPOKE cost?

15:38 Which board?

16:22 Wrap-up

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Paul is joined by three former guests: Tim Cocks, Dan Cogliano, and Cooper Dalrymple who share their experience developing apps, games, and screensavers for the Adafruit Fruit Jam and Fruit Jam OS.

Show Notes

00:00 Welcome

00:38 FruitJamOS

 * Cooper’s best practices [https://relic-se.github.io/Fruit_Jam_Pong/]
 * Fruitris [https://adafruit-playground.com/u/relic_se/pages/fruit-jam-fruitris-tetris]


3:44 Cooper’s excitement for the Fruit Jam

7:24 Dan’s interest in the Fruit Jam

 * Z Machine [https://learn.adafruit.com/zork-and-the-z-machine]
 * Moon Miner [https://danthegeek.com/moon-miner/]


8:52 Dan’s screensavers for the Fruit Jam

 * Screensaver bundle [https://danthegeek.com/2026/02/23/screensaver-bundle-for-the-fruit-jam-os-released/]


10:48 Coding for othe Fruit Jam

12:20 The Fruit Jam app library

 * Fruit Jam Library [https://github.com/relic-se/Fruit_Jam_Library]


18:02 GPIO and expansion

19:44 Display support

 * Using DVI Video Learn Guide [https://learn.adafruit.com/using-dvi-video-in-circuitpython]


24:07 Challenges to look out for when developing for the Fruit Jam

 * Mice Learn Guide [https://learn.adafruit.com/using-a-mouse-with-usb-host]
 * Keyboard Learn Guide [https://learn.adafruit.com/using-a-keyboard-with-usb-host]
 * Cooper’s Mystify screensaver [https://github.com/relic-se/Fruit_Jam_Screensaver_Mystify]


31:01 What advice for someone creating a game or app for the Fruit Jam?

 * Cooper’s Fruit Jam / Pong tutorial [https://relic-se.github.io/Fruit_Jam_Pong/]


36:48 Wrap-up

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Developing for the Fruit Jam

Paul is joined by three former guests: Tim Cocks, Dan Cogliano, and Cooper Dalrymple who share their experience developing apps, games, and screensavers for the Adafruit Fruit Jam and Fruit Jam OS.

Show Notes

00:00 Welcome

00:38 FruitJamOS

 * Cooper’s best practices [https://relic-se.github.io/Fruit_Jam_Pong/]
 * Fruitris [https://adafruit-playground.com/u/relic_se/pages/fruit-jam-fruitris-tetris]

3:44 Cooper’s excitement for the Fruit Jam

7:24 Dan’s interest in the Fruit Jam

 * Z Machine [https://learn.adafruit.com/zork-and-the-z-machine]
 * Moon Miner [https://danthegeek.com/moon-miner/]

8:52 Dan’s screensavers for the Fruit Jam

 * Screensaver bundle [https://danthegeek.com/2026/02/23/screensaver-bundle-for-the-fruit-jam-os-released/]

10:48 Coding for othe Fruit Jam

12:20 The Fruit Jam app library

 * Fruit Jam Library [https://github.com/relic-se/Fruit_Jam_Library]

18:02 GPIO and expansion

19:44 Display support

 * Using DVI Video Learn Guide [https://learn.adafruit.com/using-dvi-video-in-circuitpython]

24:07 Challenges to look out for when developing for the Fruit Jam

 * Mice Learn Guide [https://learn.adafruit.com/using-a-mouse-with-usb-host]
 * Keyboard Learn Guide [https://learn.adafruit.com/using-a-keyboard-with-usb-host]
 * Cooper’s Mystify screensaver [https://github.com/relic-se/Fruit_Jam_Screensaver_Mystify]

31:01 What advice for someone creating a game or app for the Fruit Jam?

 * Cooper’s Fruit Jam / Pong tutorial [https://relic-se.github.io/Fruit_Jam_Pong/]

36:48 Wrap-up

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Paul is joined by Abby Bergman and Esha Patel who both recently completed the Physical Computing - Interactive Art, Robotics, & Tech for Good course taught by Professor John Gallaugher at Boston College.

Abby and Esha share their experiences and projects taking the course.

Show Notes

00:00 Welcome

00:56 Professor Gallaugher’s Physical Computing - Interactive Art, Robotics, & Tech for Good course

1:42 Abby’s motivation for taking the class

 * Early Childhood Maker Literacies – DevTech Research Group [https://sites.bc.edu/devtech/research/early-childhood-maker-literacies/]


2:38 Esha’s motivation for taking the class

3:32 What was a surprise about the class?

5:20 Esha’s Interactive Hopscotch project

 * Interactive Hopscotch [https://www.instructables.com/Interactive-Hopscotch/]
 * Adaptive Tic Tac Toe [https://www.instructables.com/Adaptive-Tic-Tac-Toe/]


7:38 Abby’s Very Hungry Caterpillar

 * Interactive Very Hungry Caterpillar With RFID and Button Input - Assistive Tech [https://www.instructables.com/Interactive-Very-Hungry-Caterpillar-With-RFID-and-/]


10:29 Soldernig challenges

11:36 The Festival of Lights

12:26 What advice would you share to someone thinking of taking the course?

14:29 Wrap-up

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com [https://www.circuitpythonshow.com/pages/sponsors]. Thank you for your support!

Physical Computing - Interactive Art, Robotics, & Tech for Good

Paul Cutler (@prcutler) · Zencastr

Paul Cutler (@prcutler)

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

The CircuitPython Show

A bi-weekly podcast loading you up with news, project updates and product talk from the maker and tech scenes.  Hosted by Tod Kurt and Paul Cutler.