Liz [BlitzCityDIY]

@blitzcitydiy
2K Followers
140 Following
1.1K Posts
She/her. Music technology, woodworking, knitting, all forms of media and cats.

Printables 3D Modelshttps://www.printables.com/social/40426-blitz-city-diy/models
YouTubehttps://www.youtube.com/c/blitzcitydiy
Adafruit Learn Guideshttps://learn.adafruit.com/u/BlitzCityDIY/guides
GitHubhttps://github.com/BlitzCityDIY
Come to BC this weekend & bring friends and family! The Student Tech Showcase will be during ArtsFest! Drop by lovely new 245 Beacon St as the prototyping lab opens for students to show their #CircuitPython physical computing & #SwiftUI app innovations! Showcase 4/25 1-3pm. All Welcome!
https://drive.google.com/file/d/1VHx5nA1RWhNJ1E2w3zW1vW8dY9T36XaD/view
2026 Arts Fest Schedule.pdf

Google Docs
New episode of The CircuitPython Show is out! Tim Cocks, Dan Cogliano, and Cooper Dalrymple all return to the show and share their experience, tips, and tricks for developing apps, games, and screensavers for the Adafruit Fruit Jam. Find the show wherever you get your podcasts. https://www.circuitpythonshow.com/@circuitpythonshow/episodes/developing-for-the-fruit-jam
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 Fruitris 3:44 Cooper’s excitement for the Fruit Jam 7:24 Dan’s interest in the Fruit Jam Z Machine Moon Miner 8:52 Dan’s screensavers for the Fruit Jam Screensaver bundle 10:48 Coding for othe Fruit Jam 12:20 The Fruit Jam app library Fruit Jam Library 18:02 GPIO and expansion 19:44 Display support Using DVI Video Learn Guide 24:07 Challenges to look out for when developing for the Fruit Jam Mice Learn Guide Keyboard Learn Guide Cooper’s Mystify screensaver 31:01 What advice for someone creating a game or app for the Fruit Jam? Cooper’s Fruit Jam / Pong tutorial 36:48 Wrap-up

The CircuitPython Show

The cat's out of the bag! My latest book, "The Secret Life of Circuits", is available in early access:

https://lcamtuf.coredump.cx/blog/secret/

It's the reference I wish I had when I was starting out. Electrons to embedded systems, 290+ color illustrations and 420+ pages of well-explained theory.

The Secret Life of Circuits

Many of you follow this blog because of the regular features about electronic circuit design.

I wrote up a guide on how to build a set of walkie talkies with esp-now and Arduino. Case design was inspired by some Barbie-themed toy walkie talkies that a friend of mine had when we were little kids

https://learn.adafruit.com/esp-now-walkie-talkies/overview

ESP-NOW Walkie Talkies

Ditch the smart phone and communicate with your buddy by building this set of walkie talkies! A Feather ESP32-S3 Reverse TFT runs Arduino code that uses the ESP-NOW protocol to send and receive I2S audio packets. The w.FL antenna adds extra range to communicate at longer distances indoors or outdoors.

Adafruit Learning System
New project in progress with @ecken - CircuitPython-powered NeoPixel Tetris controlled by a seesaw gamepad. Guide soon #circuitpython
Did the actual quilting today. I used a swirly stitch
i made a video about designing and 3d printing an enclosure for the Flummoxagon puzzle by nervous system: https://youtu.be/vWsXNoem-3I
I 3D Printed an Enclosure for Flummoxagon

YouTube
Two new podcast episodes today! First up is The Bootloader, where @todbot and I share a Bambu Labs 3D printer second screen, photogrammetry, a neat little eink eReader, and more. Find the show wherever you get your podcasts or visit: https://www.thebootloader.net/episodes/2026/ep031/
Episode 31 - Help I'm Alive - The Bootloader

i made a video about designing and 3d printing an enclosure for the Flummoxagon puzzle by nervous system: https://youtu.be/vWsXNoem-3I
I 3D Printed an Enclosure for Flummoxagon

YouTube
Made a new UI built on the circuitpython-bambulabs library for my 4" Qualia display. #CircuitPython #BambuLabs