Page 1 of 2

3D printed Dual Drive Box

Posted: Mon Sep 10, 2018 9:50 am
by Alesh
Hi, I just wanted to share my 3D printed enclosure that I created for my floppy drives and Kryoflux.
https://www.thingiverse.com/thing:3089895

Re: 3D printed Dual Drive Box

Posted: Tue Sep 11, 2018 2:29 am
by rcade
That's really nice! I can only print small stuff with mine...

Re: 3D printed Dual Drive Box

Posted: Tue Sep 11, 2018 6:02 pm
by Alesh
rcade wrote:
Tue Sep 11, 2018 2:29 am
That's really nice! I can only print small stuff with mine...
Thanks, I have made it as big as my printer can print. I was thinking of maybe doing similar design, but only with single 3,5" drive - it would be smaller and without need for the power supply. And if you really want to get printed something bigger, you can use some online service like 3D hubs or such.

Re: 3D printed Dual Drive Box

Posted: Wed Sep 12, 2018 9:31 am
by npomarede
Nice all-in-one drive box. I would be very interested if you create a 3.5 only version, I think I could try to print it at work :)

Nicolas

Re: 3D printed Dual Drive Box

Posted: Wed Sep 12, 2018 1:48 pm
by mr.vince
Verrrry nice. Going to print a test of this...

Re: 3D printed Dual Drive Box

Posted: Thu Sep 20, 2018 8:20 pm
by Alesh
So, here is what i have for the 3.5" only version: https://a360.co/2xAYX0h
But i'm not sure if the KryoFlux board can, or is meant to provide power to the Floppy Drive from the USB or the barrel jack.
I think it may be possible if the drive is 5V only (some 3.5" floppy drives need 12V) and does not require much current - there is a fuse on the USB input, but i don't know what value. Looking in the schematic, it looks like connectors PWR_FDD1 and PWR_FDD2 can't be powered from the barrel jack, unless pins 1 and 3 are shorted on the 5V_VR/5V_FDD2 jumper selector, which i don't think is intended to be done. And in case you do short pins 1 and 3, the input voltage is regulated by tiny 800mA regulator without heatsink, so i'm not sure, if it will be able to provide enough power for some floppy drives. Of course you can bypass it by bridging VR_D solder pad, but then it will have no overvoltage protection if you accidentally plug in wrong power supply. My conclusion is that it can be done, but you must know what you are doing.
I'll put it on the thingiverse when I know that everything will fit inside and it works.

Re: 3D printed Dual Drive Box

Posted: Thu Sep 20, 2018 8:41 pm
by mr.vince
Alesh wrote:
Thu Sep 20, 2018 8:20 pm
But i'm not sure if the KryoFlux board can, or is meant to provide power to the Floppy Drive from the USB or the barrel jack.
This is very clearly described in the manual. Briefly: USB ports are limited to 500mA, this is what the board advertises. Floppy drives can draw up to 1A (1000mA) when spinning up the motor. This can permanently damage your USB ports. Also, running external power through the board is possible but will void your warranty as a PSU could easily damage the board by generating voltage spikes. It's simply not recommended and reserved for edge cases which are usually discussed with support.

My conclusion is: it can be done, but even if you know what you're doing... refrain from this.

Hope this helps.

Re: 3D printed Dual Drive Box

Posted: Sun Dec 16, 2018 12:37 am
by Alesh
So I finally completed the 3.5" only version. I decided to make the power supply similar to previous version with the difference that the 12V supply is external. This way it can be used with floppy drives that need 12V.
https://www.thingiverse.com/thing:3287420

Re: 3D printed Dual Drive Box

Posted: Fri Feb 22, 2019 5:33 pm
by Dominus
Both cases are very nice. And great detailed instructions o the smaller case.
What I don't understand about the small box is that you even connect the KryoFlux' "Floppy disk drive connector" (next to the usb connector) to the power. What is the purpose of this? Isn't that potentially harmful?
The floppy drive gets its power directly if I don't completely misunderstand your layout.

Re: 3D printed Dual Drive Box

Posted: Sat Feb 23, 2019 5:44 pm
by Alesh
Dominus wrote:
Fri Feb 22, 2019 5:33 pm
Both cases are very nice. And great detailed instructions o the smaller case.
What I don't understand about the small box is that you even connect the KryoFlux' "Floppy disk drive connector" (next to the usb connector) to the power. What is the purpose of this? Isn't that potentially harmful?
The floppy drive gets its power directly if I don't completely misunderstand your layout.
The idea behind the "Floppy disk drive connector" (i think even by design) is to power the KryoFlux board and not the FDD itself - for example if you have the board installed in your pc case. I have it connected just to have the board powered from same souce as the FDD, but i think it should work with just the power provided by USB port. There is an protection diode on the USB 5V input so there should not be any current flow from the board to your USB port if the board is powered from power jack or molex/berg connectors.