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Dan Cogliano

@cogliano.bsky.social
72 followers 61 following 235 posts

Engineer, maker, geek and magician, in no particular order.

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Dan Cogliano @cogliano.bsky.social · 01/10/2026
Happy #Oktoberfest month! This is a card design I did a few years ago for an #accordion themed deck of cards. Bonus points if you can guess the song on the flag.
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Dan Cogliano @cogliano.bsky.social · 29/09/2026
Welcome to #ColecoJam, a #Colecovision emulator for the @adafruit.com #FruitJam. The project includes the emulator, a cartridge reader and a 3D printed case (video includes title screen in the upcoming release). #RetroGames danthegeek.com/colecojam/
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Dan Cogliano @cogliano.bsky.social · 28/09/2026
I’m happy with my first attempt at a 3d printed case for the #ColecoJam. It still needs a few tweaks but I’m closer than I thought I would be. #ColecoVision @adafruit.com #FruitJam.
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Dan Cogliano @cogliano.bsky.social · 24/09/2026
This is really interesting: a recent community project where a #Colecovision "Mr. Do" cartridge was disassembled, enhanced with improved sound, graphics, sprites and more, and re-assembled into a new cartridge/ROM version with the name "Mr. Do Arcade". It also works with #ColecoJam. mrdoarcade.com
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Dan Cogliano @cogliano.bsky.social · 24/09/2026
The Fruit Jam now runs a #Colecovision emulator too, with #ColecoJam. danthegeek.com/colecojam/
danthegeek.com
ColecoJam Project – Dan The Geek
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Dan Cogliano @cogliano.bsky.social · 23/09/2026
Adding a screen saver to the next release of #ColecoJam, the #Colecovision emulator for the @adafruit.com #FruitJam. I thought I add this short transition instead of just enabling the screensaver.
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Dan Cogliano @cogliano.bsky.social · 22/09/2026
In the latest version of my #Colecovision emulator, #ColecoJam, I have added a logo to the cartridge menu, and now pressing button 1 on the @adafruit.com #FruitJam while in a game will return immediately to the cartridge menu, no reboot required.
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Dan Cogliano @cogliano.bsky.social · 19/09/2026
Has been one year already? This week marks the one year anniversary of my initial release of #Zork / #ZMachine for the #FruitJam. It is written in @circuitpython.org and can run standalone or with Fruit Jam OS. learn.adafruit.com/zork-and-the...
learn.adafruit.com
Fruit Jam, Zork and the Z Machine
In the 80s before ChatGPT, gamers had another way to have conversations with their computers: Zork and Z Machine games.
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Dan Cogliano @cogliano.bsky.social · 18/09/2026
#ColecoJam now supported!
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Dan Cogliano @cogliano.bsky.social · 18/09/2026
The latest release of #ColecoJam for the @adafruit.com #FruitJam includes support for additional controllers and support for the upcoming Pico-bootLoader version. A big shoutout to @frenskefrens.bsky.social for making this release happen. github.com/cogliano/Ada...
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Reposted by Dan Cogliano
gallaugher @gallaugher.bsky.social · 17/09/2026
Built my own BirdBuddy with an ESP32-S3 and #CircuitPython. I'll be polishing this with full build tutorial, but proof of concept seems to work. youtu.be/HVIMTLtxEno?...
youtu.be
Bird Identifier Demo
YouTube video by Build With Prof. G.
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Dan Cogliano @cogliano.bsky.social · 17/09/2026
An early prototype of a push-button phone. #batman #batphone #1960s
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Dan Cogliano @cogliano.bsky.social · 16/09/2026
Oh my, my @bsky.app feed is lately looking like a flashback to the #1980s. Now where did I put that #HallandOats LP?
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Dan Cogliano @cogliano.bsky.social · 16/09/2026
You can still play this game 41 years later with a Z Machine emulator like mine for the @adafruit.com #FruitJam . learn.adafruit.com/zork-and-the...
learn.adafruit.com
Fruit Jam, Zork and the Z Machine
In the 80s before ChatGPT, gamers had another way to have conversations with their computers: Zork and Z Machine games.
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Dan Cogliano @cogliano.bsky.social · 14/09/2026
Playing around with renderings of my #colecojam case for my #colecovision emulator for the @adafruit.com #fruitjam.
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Dan Cogliano @cogliano.bsky.social · 13/09/2026
Getting close to finishing my first pass of my #ColecoJam case design. #colecovision @adafruit.com #FruitJam danthegeek.com/2026/09/11/d...
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Dan Cogliano @cogliano.bsky.social · 11/09/2026
Atari's Centipede game running on #ColecoJam, a #Colecovision emulator running on the credit card size @adafruit.com #FruitJam. danthegeek.com/colecojam/
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Dan Cogliano @cogliano.bsky.social · 11/09/2026
WIP: For the next phase of my #ColecoJAM project, I am designing a case for the @adafruit.com #FruitJam and my cartridge reader shield. I started with Adafruit's case design in Fusion and modifying it to fit and look like a mini #Colecovision console.
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Reposted by Dan Cogliano
The Bootloader @thebootloader.net · 09/09/2026
Join our small - but growing - community on Discord. @todbot.com and @paulcutler.org are planning their first livestream Q&A and it will happen soon in Discord. Join here: discord.com/invite/e2Ue5...
discord.com
Join the The Bootloader and The CircuitPython Show Discord Server!
A Discord server for the maker and programmer community and to discuss recent podcast episodes from The Bootloader and The CircuitPython Show. | 14 members
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Dan Cogliano @cogliano.bsky.social · 07/09/2026
A new release of ColecoJam is now available, fixing a few nagging issues (at least to me). github.com/cogliano/Ada...
github.com
Release 1.2: Fix random crash, hidden bullets issue · cogliano/Adafruit_ColecoJam
The latest Learn Guide is available here: https://danthegeek.com/2026/08/25/colecojam-learn-guide/ This release (Build 64) has the following change: Fixed random crash (Time Pilot game) Improvemen...
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Dan Cogliano @cogliano.bsky.social · 06/09/2026
Look at what I got for my birthday! What synth @circuitpython.org projects should I make for this , @dcdalrymple.com and @todbot.com?
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Dan Cogliano @cogliano.bsky.social · 05/09/2026
Here are a few #Colecovision screen shots from the #ColecoJam emulator, running on the credit card sized #FruitJam from @adafruit.com. More info at danthegeek.com/colecojam/
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Dan Cogliano @cogliano.bsky.social · 02/09/2026
I saved the boxes. #colecovision
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Dan Cogliano @cogliano.bsky.social · 28/08/2026
My #ColecoJam project emulating a #Colecovision is coming soon to the pico-bootloader, a method for selecting and loading a chosen emulator.
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Dan Cogliano @cogliano.bsky.social · 28/08/2026
Here is a pretty accurate description of my #ColecoJam project found in a #Colecovision group on Facebook. www.facebook.com/share/p/19Cs...
facebook.com
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Dan Cogliano @cogliano.bsky.social · 27/08/2026
Version 1.1 of ColecoJam is now available. It fixes an invisible sprite issue that I discovered after recording this video. Watch how the first 2 lives where lost with invisible bullets. This has been fixed. I also noticed a similar issue in Spy Hunter. Available here: github.com/cogliano/Ada...
github.com
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Dan Cogliano @cogliano.bsky.social · 25/08/2026
Latest version of #ColecoJam is available here, which includes support for audio through HDMI and the Colecovision Game Cartridge Adapter. #Colecovision @adafruit.com #FruitJam. github.com/cogliano/Ada...
github.com
Release 1.0: Sound now plays through HDMI · cogliano/Adafruit_ColecoJam
The latest Learn Guide is available here: https://danthegeek.com/2026/08/25/colecojam-learn-guide/ This release has the following additions/changes: The audio is now routed through the HDMI cable,...
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Dan Cogliano @cogliano.bsky.social · 25/08/2026
Next version of #ColecoJam will route sound through the HDMI, no external speaker needed. Also, my cartridge reader will be supported, so you can play either from a game ROM or the inserted cartridge. (sound on!) @adafruit.com #FruitJam #colecovision
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Dan Cogliano @cogliano.bsky.social · 22/08/2026
Screenshot of Galaxian by Atari running on my #Colecovision emulator #ColecoJam on the @adafruit.com #Fruitjam.
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Dan Cogliano @cogliano.bsky.social · 22/08/2026
In this live episode of the Bootloader podcast, @paulcutler.org and @todbot.com talk about highlights of CircuitPython from the past year, including my #Zork and Moon Miner games for the @adafruit.com #Fruitjam (link below is now live).
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Dan Cogliano @cogliano.bsky.social · 22/08/2026
Here is my blog post on my new Colecovision emulator for the Adafruit Fruit Jam. @Adafruit.com #FruitJam #ColecoJam #Colecovision
danthegeek.com
A Colecovision Emulator for the Fruit Jam (Or, How to Create a Game Emulator using Claude in 7 days)
After finishing my Colecovision game cartridge shield for the Adafruit Fruit Jam, my next quest was to find a Colecovision game emulator for the Fruit Jam. Unfortunately, I could not find any so I thought about writing one. I knew what was needed in a Colecovision emulator and have written C++ programs before, but I… Read More »
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Dan Cogliano @cogliano.bsky.social · 21/08/2026
My Colecovision emulator (source code and uf2 file) is now available for download on GitHub. The official name of the emulator is "ColecoJam". github.com/cogliano/Ada...
github.com
GitHub - cogliano/Adafruit_ColecoJam
Contribute to cogliano/Adafruit_ColecoJam development by creating an account on GitHub.
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Dan Cogliano @cogliano.bsky.social · 21/08/2026
This is my first demo of the #Colecovision emulator running on the @adafruit.com #FruitJam. It not only shows video, game ROM and controller support in the emulator but also how bad I am at playing Defender (sound is working but not in video).
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Dan Cogliano @cogliano.bsky.social · 21/08/2026
WIP: Could this be a #Colecovision emulator for the @adafruit.com #FruitJam, complete with SD Card support for storing game ROMs, sound and controller support? (Yes. Yes it is.)
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Dan Cogliano @cogliano.bsky.social · 02/08/2026
My documents are being held hostage by my inkjet printer, refusing to print a black and white document until I cough up $50 for a magenta cartridge.
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Dan Cogliano @cogliano.bsky.social · 26/07/2026
This was NOT in my bucket list but a lot of fun: playing the National Anthem at a baseball game … on the #accordion !
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Dan Cogliano @cogliano.bsky.social · 24/07/2026
Moon Miner sighting!
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Reposted by Dan Cogliano
Vláďa Smitka @smitka.bsky.social · 24/07/2026
Hey @cogliano.bsky.social, I tweaked your Moon Miner for @circuitpython.org a bit, and now it runs at 95 FPS on FruitJam and even plays on the @raspberrypi.com RP2040 🙂. Really nice game! #picogame
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Dan Cogliano @cogliano.bsky.social · 18/07/2026
WIP: At my third (and hopefully last one for a while) revision of my @adafruit.com #FruitJam shield to read #ColecoVision game cartridges and write them to an SD card. The good news is I now have a new set of coasters to use around the house using the PCBs from revisions 1 and 2.
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Dan Cogliano @cogliano.bsky.social · 18/07/2026
Shoutout to @jlcpcb.bsky.social : tried out the service for the first time and the time it took from placing the order, manufacturing the PCBs, and arriving at my door from the other side of the world was 7 days. SEVEN DAYS!!! Wasn’t expecting that quick of a turnaround.
Photo of PCBs
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Dan Cogliano @cogliano.bsky.social · 11/07/2026
I came across this age verification screen in both the app and browser versions of Bluesky while traveling in Texas. It gave me a reason to try out the Opera browser and it’s VPN feature.
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Dan Cogliano @cogliano.bsky.social · 01/07/2026
July marks @adafruit.com #FruitJam 's 1st birthday! I've been having a lot of fun creating projects for it. There are tons of things you can do with it, including programming it with @circuitpython.org . Here are just a few examples (incl. my Zork game emulator): learn.adafruit.com/search?q=fru...
An AI generated picture of an Adafruit Fruit Jam in the shape of a birthday cake with a candle on top and a piece cut out.
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Dan Cogliano @cogliano.bsky.social · 29/06/2026
Woohoo! My #ColecoVision shield for the @adafruit.com #FruitJam is Project of the Week in this week's CircuitPython newsletter. www.adafruitdaily.com/2026/06/29/p...
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Dan Cogliano @cogliano.bsky.social · 29/06/2026
WIP update: my @adafruit.com #FruitJam shield for reading a #Colecovision cartridge sits higher than the default top plate due to the header pin plastic housing on the shield bottom. I added standoff extenders and 3d printed button and switch extenders and now shield is firmly attached to the FJ.
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Dan Cogliano @cogliano.bsky.social · 25/06/2026
WIP on #ColecoVision cartridge reader shield for the @adafruit.com #FruitJam: Success! PCBs arrived, parts soldered and initial cartridge reading @circuitpython.org script works! (I can see the game title in the raw data.) Next up is enhance code to write the cartridge data to an SD card.
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Dan Cogliano @cogliano.bsky.social · 24/06/2026
Going through a box of old projects I know immediately what #epaper / #eink display projects I was working on last (and want to resurrect again).
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Dan Cogliano @cogliano.bsky.social · 11/06/2026
In the pre-internet days, anybody else besides me use CompuServe?
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Dan Cogliano @cogliano.bsky.social · 05/06/2026
WIP: received my #ColecoVision game cartridge PCB shield for the @adafruit.com #FruitJam. Discovered the edge connector was not tall enough unless you break the cartridge casing. There are taller edge connectors but use a different footprint so PCB design updated and now waiting again for new PCBs.
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Dan Cogliano @cogliano.bsky.social · 02/06/2026
This is upsetting. @adafruit.com has disabled their blog site due to legal threats. I hope this is only for the short term and it will be back soon.
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Dan Cogliano @cogliano.bsky.social · 20/05/2026
A beautiful day for the #BlueAngels in #Annapolis today!
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