MARCHintosh 2026 Projects

[Trash80toG4]

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only had to slice the PSU side off for this build, but then random bits of metal and a ton of JB weld to fill in all the gaps. printed a cover for the IO shield area as thats where i put the sff power supply. The case is actually a 15x15x7 junction box that had to be cut with a grinder

In this shot it looks like you had the same kind of offset slot problem I have, in the other not so much?



Difficult to show the 3.8mm offset required to fit the 9500/PEx boards. But easy enough to see that the rightmost slot edge will be a perfect overlay for the resultant gap.

After the grlf flies home Sunday I can get down to the grinder/cutoff nitty gritty.

Crosshatched sections show the absolute minimum I could do in case mod, but will be doing a bit more to fair the new black slot section in across the back. DB-25 Port A will work for the SCSI connector if I file the ear out a little, even less as shown for the speaker/microphone ports above ALARMS. The indented slots for the backplane cover plate extensions had to be done, so opening things up a bit more than the crosshatched indications will be done.





These two shots detail the further cutback I need to do for to the tan plastic Netra board supports for fitting the PEx mobo. Will work nicely supporting the Board's Memory/ROM slots.

 

[Mu0n]

I added an about screen to my FireJam project

https://tinkerdifferent.com/threads/digesting-midi-in-with-c-on-68k-macs-video.5134/post-45390

 

[geerlingguy]

My MARCHintosh has been busy, some year I'll join in GlobalTalk, but for now I'm using it as an excuse to work through the backlog of old Macs I have sitting on shelves un-inventoried...

So far:

1. I finally put together my Pico Micro Mac — the V2 version that required some extra soldering work. Fun, definitely enjoyable, especially as a Raspberry Pi Pico connoisseur!
2. My Dad and I were lucky to get a Docklite from Juicy Crumb, and so we installed it in his old iMac 2010 21". Excited to hear they're also working on a way to get the Combo drive working—he will actually find a lotta use for it, as unlike me, he's okay with 1080p displays still
3. I just finished recapping an Xserve G5 PSU (huge thanks to House of Moth for assistance!), and now I'm trying to figure out the best way to do lights out management of the G5 — I know the Xeons had ipmitool support, but it doesn't look like the G5 has a BMC? Shucks.

In the coming weeks, I hope to finish up a video I've been working on a while, on my favorite Mac laptop of all time (and some runners-up), with a few special guest appearances. Then if I can finish it, a video on how I made my first YouTube video — using a similar FireWire + G4 setup I used back then... and then showing a neat new tool that might get some of us to pull our old DV cameras out of the closet! (Hint: it's called the Firehat!)

I've been enjoying all the other projects I see on here, the live streams, etc. — and with this leading up to Apple's 50th, it's been a great month of nostalgia for the computers that I grew up using!

 

[theirongiant]

Someone on the Wireshark Discord pointed me to this GitHub repo with a very complete Lua plugin for decoding AURP traffic — legacy AppleTalk.

GitHub - bytex64/aurp-dissector: A Lua Wireshark dissector for the AppleTalk Update-Based Routing Protocol

A Lua Wireshark dissector for the AppleTalk Update-Based Routing Protocol - bytex64/aurp-dissector

github.com

It's been rather interesting to sniff "vmenet0" of my virtual Quadra 800 acting as an Apple Internet Router. Especially with 100+ nodes in the GlobalTalk network. I can only see the traffic going in and out of my node, and since most of us are directly connected to other AIR nodes, it's pretty much limited to traffic I'm generating like browsing file shares, sending or receiving routing updates, pinging other networks and devices, etc. Nevertheless, AppleTalk is a very descriptive protocol.

 

[Null]

This is my first ever Marchintosh. I only started using apple products last year. Before that I was a windows user since 3.11.

So to keep it simple for my first I got a PowerBook G4 1.67. I upgraded the ram to max, placed a mSata drive in it. I’m really struggling to get macOS installed on it by the only way I have which is usb. I don’t own any other older Mac or any FireWire things. So I’m currently waiting for a retail copy of leopard in the mail.

My end goal is to see how far I can push it to run modernish browser, do basic email/word processor stuff. Once I get all that I’m turning my attention to turn it into a retro gaming machine for anything 90s RPG related.

 

[mac27]

My project for Marchintosh this year was a video project! I am still fairly new to video production, so this particular episode was a challenge but I learned a lot while putting it together.

This is a ~45min long video showing a CIB 20th Anniversary Mac system. I believe it is the longest / most comprehensive video of this system presently on YouTube, though I could be wrong. So if you're into that sort of thing feel free to give me some feedback on the vid.

 

[sunvalleylaw]

My Marchintosh Project as a vintage newbie is to figure out how to connect up all the various Serial/MIDI pieces (Roland PC-200, Opcode Studio 2 interface, cables, microphone) I have collected to my Mac SE/30 with 64 MB RAM, BlueSCSI and FloppyEMU, get something like Opcode Studio Vision or early Cubase or Logic and get it all running for some simple music/sequencer/DAW play. The Treasure Valley Vintage Computing Club (https://tvvcc.org/) has an expo on April 18 and I hope to have it up and running to present, along with a couple other machines I plan to bring with games. (Apple IIe, likely running Oregon Trail, Beige G3 266 running Myst and Launch CD mags). You can see the Mac SE/30 and in the background, bits of the Beige G3, in this video. First time I fired that SE/30 up!

 

[MacOfAllTrades]

RELEASED: MacDoom SE/30!
Started a thread to discuss: https://tinkerdifferent.com/threads/released-macdoom-for-se-30.5154/
Feedback welcome!

Git repo here: https://github.com/retrospectmike/MacDoomSE30 seee RELEASES page for download of .sit file. Pop it onto a System 7.5.3 system and have fun.

Edit — WHUPS. forgot to make the repo public — fixed!

 

[Byte Knight]

We're halfway through #MARCHintosh! Have you called your local #GlobalTalk BBS yet? It's a breeze to set up and get on - full details here:
http://crowsnestbbs.ddns.net/cn/

 

[falecore]

Project “Tseep”: Power Mac 9600 as a Nocturnal Migration Listening Station

Happy #Marchintosh2026!

I wanted to take a moment and share my #Marchintosh2026 project that bridges 90s Mac workstation muscle with modern avian research: transforming my Power Mac 9600/500 G3 into a dedicated Nocmig (nocturnal migration) recording and analysis station.

The Mission:

I am an avid “birder” (birdwatcher) and live in southern coastal New York, directly on the Atlantic Flyway. Every spring, millions of birds migrate overhead under the cover of darkness, emitting "flight calls" to stay in contact. These faint, high-frequency “tseeps" “seeps” and "zeeps" (6-9kHz) are often the only way to track species movement at night. To catch them, I’m installing a custom-built "Bucket Mic" on a ledge outside my attic window, positioned with a clear view facing South/Southwest to intercept the migrants as they push north.

The Rig:

Computer: Power Mac 9600/350 (500MHz G3 card 320MB RAM) and BlueSCSI v2 with high-endurance SD card for 8-hour continuous 16-bit/44.1kHz writes.

The "Ear": A DIY "Bucket Mic" setup—a 5-gallon plastic pail lined with acoustic foam to reject ground noise, sealed with a "drum-tight" plastic wrap and pantyhose acoustic window.

The Pill: I’m building a high-gain pre-amp around a PUI Audio AOM-5024L-HD-R capsule and a TI TLV271 op-amp (SOT-23 on a PA0084 DIP adapter). It’s powered by a dedicated 9V rail to keep the noise floor low enough to catch birds at 2,000 feet.

The Workflow:

I’m using AppleScript to automate the recording schedule (dusk-to-dawn). The 9600 should be able to successfully record and analyze high-resolution FFT spectrogram in software like SoundEdit 16 and Audacity 1.2.6.

I’ve been in touch with Harold Mills (who wrote the original Tseep/Zeep detectors at Cornell in the 90s) and the Macaulay Library to hunt down the original Mac-ported detection algorithms. If those are lost to time (anybody know someone who did acoustics research at Cornell in the early 90’s???), the 9600 will still serve as my manual "Spectrogram Hunter" to ID species by their visual signatures.

However, for the most difficult IDs—like distinguishing between the confusing warblers — I’ll likely export clips to a modern machine for analysis. Tools like BirdNET or Cornell’s Raven Pro will serve to verify species when the classic spectrogram shapes are too similar to call by eye.

Waiting on my Mouser order to finalize the "pill" pre-amp. Will update once the first "seeps" are captured!
I am open to any and all input from the community!

-fal3core

#Marchintosh #Marchintosh2026 #VintageMac #CitizenScience #PowerMac9600 #Nocmig #TinkerDifferent

 

[MacOfAllTrades]

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I loved every byte of this post. What a genuine idea. And man that setup shot takes me back. I grew up with my first computer a 7500/100 power Mac which had that outrigger case lik the two in the middle. And then my dad upgraded us to the PowerPC G3 minitower just like that one on the left. I loved those two computers and have so many wonderful memory feelings of just endless fascination with those two computers. That picture takes me back. That little glowing green power button on the minitower just amazed me so much. I remember the thrill I had “modding” the hardware by replacing that green light with a red one. Haha I know it’s tame but I remember sweating bullets worrying I was going to somehow fry the computer for my tiny mod. Mom yelling at me in the background telling me to stop.
Hard to believe I remember a handful of years ago helping clean out my mom’s house by taking that minitower to the street corner for the trash truck to pick it up. It would only be a year or so later when I’d get into retro computing and think boy that was stupid….. It happens.