Lmst

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.

The open enclosure of my device. The microSD module is now in front, in the center.

The box, closed. The slot for the microSD is in the groove of the box, where top and bottom join and the LED is.

I have been asked "what would it take to make the #Fujinet daisy-chainable" on #AppleII , so I tried to answer the question and share what I learnt during #BurgerDisk development:

https://www.colino.net/wordpress/en/archives/2026/01/18/handling-daisy-chaining-storage-on-apple-ii/

#retroComputing

Testing @slaine 's assembled #BurgerDisk PCB. It works first time!

A picture of a PCB on top of two floppy disk drives. it's connected via a flat cable to the unit right under it.

#3dprinting the enclosure for @slaine 's #BurgerDisk

A photo of the 3D printer's bed, just started printing the enclosure. It's still at first layer so the print is still translucent.

I built a second #BurgerDisk unit for a friend, so I took the opportunity to test that one could chain BurgerDisks behind BurgerDisks. (Yo_dawg.jpg)

#RetroComputing #AppleII

A picture of the longest daisy chain I ever made. Apple IIc => Unidisk 3.5 => BurgerDisk => BurgerDisk => Disk //c

Don't mind me, just copying A2Desktop from its 800kB floppy to a directory in my brand new 32MB /APPLICATIONS volume, which lives on a microSD card in my #BurgerDisk

#RetroComputing #AppleII

This is indeed the final-final version! It works 🤩

#RetroComputing #AppleII #BurgerDisk

Picture of a messy desk with a BurgerDisk being assembled

#BurgerDisk update: I have received the "final-final-last-version" of the PCBs. They seem correct. I am very impatient and took the afternoon off to assemble the first one !
#retrocomputing #appleII

A pile of 10 unassembled PCBs, and adapter PCBs.

Happy with the last version of my #BurgerDisk enclosure, so here's a short video about it: https://makertube.net/w/1xs42Yj6jzMabaYpB3VArp

#RetroComputing

Seems like this PLA is a little bit translucent. The LED is in the middle of the enclosure there, and it illuminates the whole box. This is not what I want. I'm taking advice.

#BurgerDisk #RetroComputing #AppleII

Print of the night. Seems good!
#BurgerDisk #RetroComputing

The full printed enclosure sitting on my laptop. It looks quite like a floppy disk drive of the period. The PCB fits inside well and the DB19 support/holder does its job of keeping it sturdy.

Well it seems I'm gonna get to bed.
#BurgerDisk #RetroComputing #AppleII

As expected, my first test of a 3D-printed enclosure for the #BurgerDisk is far from perfect. But it is better than I expected! (this is my first 3D model and it probably sucks in numerous ways).

#RetroComputing #AppleII #3Dprint

#BurgerDisk

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