Lmst

https://www.colino.net/wordpress/archives/2026/03/07/more-apple-ii-chainable-hard-drives/

@colin_mcmillen Wow, ton lecteur Apple Disk IIc est encore superbe, pas jaune quoi. Comparé au #BurgerDisk, il fait pas du tout tache. C'est un original Apple (je vois la pomme sur le dessus au fond) ou une belle réplique récente ?

The upgraded microsd modules are very satisfying. Now you don't need nails or spoons to insert or eject them!
#BurgerDisk

This is all the assembled units for the Kickstarter! #phew
#RetroComputing #AppleII #BurgerDisk

A pile of 32 Burgerdisk units, stacked on the nightstand in the basement. Next to them, on the couch, are 10 kits in a box.

News about #BurgerDisk: The Kickstarter is over! I am rather overwhelmed by the level of support. I didn't expect that.
Luckily I've been soldering things in advance so I now have not much more to do than to finish assembly and test each unit.
#RetroComputing

I am very much back on my bullshit
#RetroComputing #BurgerDisk #AppleII

A Tinkercad screen of a small sibling for the BurgerDisk. It's very small and aims at being plugged at the back of the computer, with the next device in chain.

There are 99 solder points per #BurgerDisk PCB, plus 39 per adapter.
This evening I did 350. I must limit myself to avoid back pain 🧓
#RetroComputing

Excuse the mess! :D

I'm beta testing a #burgerdisk by @colin_mcmillen on my Delta #apple2e clone.
It's wired to a SmartDisk][ card, and so far it's been working great. I could even daisychain it to a #FloppyEmu!

https://github.com/colinleroy/BurgerDisk
https://www.kickstarter.com/projects/colinleroymira/burgerdisk/

Photo of a BurgerDisk without a case, connected to a big motherboard via a flat cable. A homebrew keyboard can be seen on the desk. The device is surrounded by cables and other accessories.

I received black filament and 3d printed a black #BurgerDisk enclosure. The imperfections of printing are more visible than on white boxes, but I think it still does look good?

It's easier when a hardware patch involves removing a component rather than adding one

#RetroComputing #BurgerDisk

A closeup of my PCB, where D1 has been replaced by a wire

I have started soldering and assembling some #BurgerDisk units for the kickstarter... But I've run out of Arduinos and will soon be out of PCBs, and MicroSD modules. I'll have to wait for the postman to continue!
#RetroComputing

Picture of my "workbench" (which is a table) with 5 of my hard drives being assembled. They're in various levels of completion. Some lack an Arduino.

#BurgerDisk news: there seems to be interest in my device, so I've opened a small Kickstarter! we'll see how it goes 🙂

https://www.kickstarter.com/projects/colinleroymira/burgerdisk/

#RetroComputing #AppleII

Back to assembly now, I've (barely) started on a #BurgerDisk utility that would allow manipulating volumes from the host - format volumes, change volumes' image, etc.
For now it's only able to enumerate Smartport units.

A very small program's output on the Apple //c's green monitor. It lists all units found and their names:
Slot 5:
Unit 1 size 800kB - DISK 3.5
Unit 2 size 32767kB - BurgerDisk
Unit 3 size 32767kb - BurgerDisk
Unit 4 size 800kB - BurgerDisk
Slot4:
Unit 1 size 1024kB - RAMCARD

#BurgerDisk v2 PCB, much cleaner and made from a schematic, is validated 🥳 I took the opportunity to make a better enclosure mount too, and it is also validated!

The new PCB, assembled (without the Nano). Almost everything is lined up and I find it satisfying

The inside of the new enclosure, with the PCB inside. The mounting holes are 8mm, and on the top side of the enclosure (not seen here) are matching "pegs" that come down to maintain the PCB in place.

I'm interested of people's opinion on the Micro vs full-size SD card after reading the article (especially the opinion of people who would be interested by the device).
#RetroComputing #AppleII #BurgerDisk

I've been thinking about the best way to make an enclosure that would fit every possible version of the #BurgerDisk. I'm starting to be happy with the results!
https://www.colino.net/wordpress/archives/2026/01/25/burgerdisk-enclosure-and-the-cardinality-of-options/
#RetroComputing #AppleII

#Kicad question I can't figure out by myself. I'm trying BOM/CPL file generation to automate #BurgerDisk assembly, with some positive results.
One thing I can't figure out: how can I tell via BOM/CPL files that I want two 1x15 female headers in the Arduino footprint?

Screenshot of JLCPCB's simulation of my assembled PCB. Everything is fine apart from missing headers for the Arduino, which I don't know how to do.

Teaser: the v2 enclosure will come with an indentation so that one will be able to stick a little 🏳️‍🌈 Apple logo!

#BurgerDisk #AppleII #RetroComputing

I've released #BurgerDisk v1.1. The PCB, enclosure and firmware are updated.
The main difference is that the new PCB is able to withstand being plugged into an old DiskII controller without frying and without a configuration jumper.
The second difference is that the microSD slot is now in the front of the enclosure.

I expect to release v2.0 quite soon, with a functionally identical PCB, redesigned with Kicad. It will come with another enclosure update, allowing for a sturdier mount.

The v1.1 firmware is compatible with the v1.0 PCB and vice versa.

More information at https://www.colino.net/wordpress/en/burgerdisk-an-apple-ii-smartport-hard-drive/

#RetroComputing #AppleII

The new BurgerDisk PCB, assembled. The jumpers are gone, and there is an optocoupler and two resistors instead.

Update on the #BurgerDisk SD slot. Having the slot at the back was impractical. Plus, it made us solder the microSD module to the PCB.

#burgerdisk

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