November 04, 2024

Welcome Kevin Santo Cappuccio

29 minutes

Welcome to the show

For detailed show notes and a transcript, visit TheBootloader.net

Join our newsletter! Keep up with the show and what Paul and Tod are up to. Visit The Bootloader’s newsletter page to browse the archives or subscribe.

Welcome to our second guest, Kevin Santo Cappuccio, the creator of Jumperless.

6:20 The UNO Plus+ (Kevin #1)

The UNO Plus+ from John Loeffler is what the Arduino UNO should’ve been all along. It’s the same shape and hardware as the Arduino UNO, with the added bonus of LEDs on every pin to show you the state.

10:36 Manyfold (Paul #1)

Manyfold is a self-hosted solution to organize and share your files for 3D

printing. It’s also connected to the Fediverse, allowing you to follow instances (aka server) or

creators. You can run it in single-user mode or multi-user. You can also make files public or private,

which is great for saving models you might have paid for but don’t or can’t share publicly.

Suported file formats include 3MF, Blender,

FreeCAD, OpenSCAD, STEP, STL, OBJ, GCode, BMP, GIF, JPG, PNG, SVG, and even video files in MP4 or MPEG.

It also support Markdown, PDF, and text files.

Demo instance

Public instances

GitHub repository

FLOSS Weekly podcast episode with James Smith

13:52 Quake on a SparkFun Thing Plus Matter board (Tod #1)

next-hack.com got Quake running on a Feather-sized board

The folks at nexxt-hack.com have Quake running on a SparkFun Thing Plus Matter board.

This board is in the Feather format (0.9“ x 2“) and sports a MGM240P wireless module

for doing Bluetooth and Matter wireless protocols. This module also sports a EFR32MG24 chip,

which is a 32-bit ARM Cortex-M33 processor at 39 MHz, 1.5MB flash and 256 kB of RAM.

(This is essentially the same specs as the new RP2350 from RasPi, so maybe we’ll see Quake on an Adafruit Feather soon?)

After proving the idea using the SparkFun board, they designed a complete Quake-playing

gamepad with built-in screen, joysticks, sound, and battery.

This time using the Arduino Nano Matter board (which has a similar MGM240-series module on it) Oh also: you can do BLE-based multiplayer and it runs at 35 fps at 320 x 240.

SparkFun Thing Plus Matter board

Writeup on the Silabs.com tech blog

Next-hack gamepad using Arduino Nano Matter board

Next-hack gamepad design files

18:00 Evolvable Hardware (Kevin #2)

Evolvable Hardware

Been around since 1990

Developed at the University of Sussex by Adrian Thompson

Used a XE6200 FPGA (100 gates - 10x10 FPGA)

Project IceStorm is reverse engineering a modern FPGA

23:18 FlexiPi Kickstarter (Paul #2)

The FlexiPi is a new Raspberry Pi Pico with a few tricks up its sleeve. First - it’s flexible,

hence the name and wafer thin. It also includes a few upgrades from the original Raspberry Pi Pico, including using USB-C instead of Micro-USB and a programmable Neopixel built-in. Otherwise, the pinout stays the same as the popular Pico.

Kickstarter campaign

Tom’s Hardware coverage

Update Since recording, the FlexiPi Kickstarter project was suspended by Kickstarter and the reasons why are unknown. To stay updated on the project, you can sign up for their newsletter here.

25:11 EMMG MIDI Synth (Tod #2)

A hacker in our community, Johnathan Bisson / @bjonnh, created the

EMMG Midi Synth as

a teaching tool for a Workshop on MIDI and music synthesis at the

Pumping Station One hackerspace in Chicago

The workshop taught what MIDI is, from down at the signalling level to how it’s used by performers. The board each student got was custom-designed. It has 8 pots, 12 captouch pads, an OLED display and stereo audio out, all driven with a USB-C 16MB Pico clone. The workshop also talks about how GPIOs work and how capsense works. Looks like it was pretty great!

EMMG MIDI Synth homepage

Workshop notes

Workshop slides

Pra32-u synth engine

pico-test-synth – my test platform for playing with synths on a Pico

picoslidertoy

eight_by – my yet-to-used take of adding 8-pots to a single analog in using

analog mux chip

Enjoying the show? You can now sponsor the show, learn more at www.circuitpythonshow.com. Thank you for your support!

...more

View all episodes

By Paul Cutler and Tod Kurt

33 ratings