Putting together a GOTEK, what do I need...

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LordVaderUK
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Putting together a GOTEK, what do I need...

Post by LordVaderUK » Thu Mar 14, 2019 3:25 pm

Hi all,

Getting back into retro computing and having fun. I now have a BBC B+ and an Electron. I've bought a GOTEK drive, plus an LCD display and a rotary dial. However I assume I'll also need some other bits, like a ribbon cable, some wiring, headers (is that what they're called?) to solder onto the motherboard, connectors for the rotary knob, power connector, etc.

Firstly, I have no idea what I'll need. I've looked on YouTube and found a couple of videos on there but they are really, really poor. One video is basically 20 minutes of the back of some guy's hand as he solders, you can't see a thing!

Is there a DIY GOTEK shopping list somewhere? And second question, where should I order this stuff, RS? Farnell? Somewhere else?

I know there is the option to buy a full modded GOTEK but I want to give this a go myself as a bit of a project.

Thanks in advance.

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Thu Mar 14, 2019 3:40 pm

LordVaderUK wrote:
Thu Mar 14, 2019 3:25 pm
Firstly, I have no idea what I'll need. I've looked on YouTube and found a couple of videos on there but they are really, really poor. One video is basically 20 minutes of the back of some guy's hand as he solders, you can't see a thing!
That'd be me :)

You can't complain if it's free! :D

Check the wiki:
https://github.com/keirf/FlashFloppy/wiki

You need a rotary encoder, and an OLED display and some wires. Rotary encoders are best found on ebay. Here's one with a knob and nuts. Which makes it easier: https://www.ebay.co.uk/itm/261857741214

OLED, something like this:
https://www.ebay.co.uk/itm/192843230556

Feel free to make a video of you fitting it all :) :D

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Re: Putting together a GOTEK, what do I need...

Post by LordVaderUK » Thu Mar 14, 2019 3:42 pm

Hi Danielj, thanks for the quick reply - sorry if that was you on the video I meant no disrespect, it was more an expression of frustration that I couldn't find the info I needed on the internet! You're way ahead of me, I am a total beginner. Thank you for the links :wink:

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Thu Mar 14, 2019 3:56 pm

No problem - I made it (as best I could, I have to say I'd never done anything like that before, it's certainly not as easy so many make it look!) as there was absolutely nothing that gave any indication of how to fit these things, and people were charging a rather large premium for doing something that I figured most people could probably do themselves with a bit of encouragement :)

Ignore the back of my hands though, the soldering's not really the important bit, that's fairly self explanatory, the only tricky bits are cutting the window of the gotek to the right size for the OLED if you want to use the whole display, and wiring up the rotary encoder appropriately.
Last edited by danielj on Thu Mar 14, 2019 3:57 pm, edited 1 time in total.

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Re: Putting together a GOTEK, what do I need...

Post by LordVaderUK » Thu Mar 14, 2019 4:32 pm

Thanks - however my queries are more basic I think... I've ordered the rotary knob and the OLED display. But I have no connectors, pin headers, or wires to plumb it all together. I found RS Components very confusing (bearing in mind I don't know anything), to the point that I couldn't even work out what to search for. Is there a shopping list somewhere?!

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Thu Mar 14, 2019 4:43 pm

Not really as these things change... Let me have a look a bit later for the basic stuff and point you in the right direction.

d.

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tricky
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Re: Putting together a GOTEK, what do I need...

Post by tricky » Thu Mar 14, 2019 6:15 pm

You need to get power to the GOTEK, this can come internally or from the external power connector on the beeb (there is a thread with a part number).
I would update the firmware to the latest FlashFloppy firmware - there is a reasonable video.
You also need a floppy ribbon cable, the non-twisted part, or I think it might even work with a twist!
You can put my bbcmicro.co.uk menu on until you get your oled etc working from this thread.

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Thu Mar 14, 2019 6:52 pm

OK - not on my phone anymore :) The question is how much do you want to spend? The neat way to connect the encoder to the main board is to put headers in, then crimps onto the wires to the encoder, then plug them in. The cheap (and quicker) way to do it is just to solder wires from the encoder directly through the holes on the main board. Likewise with programming, the cheap way to do it is with an unbent paper clip to link the holes together temporarily (no need to solder it, just put pressure on it), and use the USB A-A cable method outlined in the wiki.

If you decide to go the neat route, you need rather more kit, I can point you in the right direction. Wire-wise, you just need hookup wire - ebay hookup wire, pick your colour, and you'd be fine with 18AWG as a thickness.

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Re: Putting together a GOTEK, what do I need...

Post by SpaceFlightOrange » Thu Mar 14, 2019 11:59 pm

I used jumper cables like these:

Female-Female Jumper Cables (Amazon)

I have loads of them from many years tinkering with Breadboards and the Raspberry Pi. I soldered on the headers at the back of the Gotek board (2 rows, one with 5 pins and one with 2 or 3, mine has 3), used the jumper cables to create the links, and flashed using the USB A-A cable method. was really easy, though it has to be done on the command line on a Mac. I also just happened to have an unused A-A cable in work (never seen one before, never seen one since).

I then sacrificed a few of the jumper cables for the encoder, by cutting one connector off and soldering to the encoder.

fitting the OLED, just requires careful measuring and a steady hand when cutting. a fine junior hacksaw blade, sharp craft knife and some small files will get it nice and neat.

The encoder Danielj mentions above is the one I use, from the same seller. definitely recommended.

Oh, and I definitely recommend Tricky's menu. It's really good!
Last edited by SpaceFlightOrange on Fri Mar 15, 2019 12:11 am, edited 5 times in total.

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tricky
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Re: Putting together a GOTEK, what do I need...

Post by tricky » Fri Mar 15, 2019 6:45 am

One thing with my menu is that it uses indexed (?) Mode, is probably best kept on a separate stick so that you can use nice directories and file names on the other unless FF has added new features.

PS I received one of those 40 way cales yesterday that I ordered to make power leads for my gotek and audio leads for my D2As.
Last edited by tricky on Fri Mar 15, 2019 6:49 am, edited 1 time in total.

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Re: Putting together a GOTEK, what do I need...

Post by LordVaderUK » Fri Mar 15, 2019 3:48 pm

danielj wrote:
Thu Mar 14, 2019 6:52 pm
OK - not on my phone anymore :) The question is how much do you want to spend? The neat way to connect the encoder to the main board is to put headers in, then crimps onto the wires to the encoder, then plug them in. The cheap (and quicker) way to do it is just to solder wires from the encoder directly through the holes on the main board. Likewise with programming, the cheap way to do it is with an unbent paper clip to link the holes together temporarily (no need to solder it, just put pressure on it), and use the USB A-A cable method outlined in the wiki.

If you decide to go the neat route, you need rather more kit, I can point you in the right direction. Wire-wise, you just need hookup wire - ebay hookup wire, pick your colour, and you'd be fine with 18AWG as a thickness.
Neat please :-)

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Re: Putting together a GOTEK, what do I need...

Post by rharper » Fri Mar 15, 2019 4:00 pm

I have a Gotek with a small OLED screen and rotary button in the case but also this one with a larger screen and push button switch.
You will need to solder in headers such as here, https://www.ebay.co.uk/itm/5x-GOTEK-ENC ... ctupt=true for the 8 (5+3) that do not come as standard.
I found Dupont cables useful for making the connections rather than soldering.
Ray :)
gotek2.jpeg
gotek1.jpeg
Raycomp

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Fri Mar 15, 2019 6:05 pm

LordVaderUK wrote:
Fri Mar 15, 2019 3:48 pm
Neat please :-)
In that case, it's the pin headers (2.54mm pin header - e.g. https://www.toby.co.uk/board-to-board-p ... in-header/ - other suppliers are available!), and the dupont cables people have listed above. Or you can use crimps on the wire mentioned above, something like:
https://uk.rs-online.com/web/p/pcb-conn ... s/9094366/

And then a crimping tool:
https://www.ebay.co.uk/itm/153093979142

And then either heat-shrink tubing (which is what I used in that video) or the plastic covers for the connector contacts. I'd personally use heatshrink as it means you can tuck things in more easily.

The ready made dupont leads might be easier and rather cheaper!

d.

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Re: Putting together a GOTEK, what do I need...

Post by oPless » Fri Mar 15, 2019 11:50 pm

This is what I bought:

Gotek
* https://www.amazon.co.uk/gp/product/B015IQ5MCG/

OLED (2 pack)
* https://www.amazon.co.uk/gp/product/B07BDFXFRK/

Rotary Encoder (5 pack)
* https://www.amazon.co.uk/gp/product/B06XT58ZW9

Cable (longer ones are available)
* https://www.amazon.co.uk/gp/product/B01FEXLXN0/

The multi packs seem to be cheaper than my investigations on eBay at the time.

Also I have pin headers, and dupont cables

Dupont cable selection (4" and 8")
* https://www.amazon.co.uk/gp/product/B06WV7XHJ9
* https://www.amazon.co.uk/gp/product/B01EV70C78

Pin headers
* https://www.amazon.co.uk/gp/product/B079KH2JYN


I tend to buy for future projects in mind, but often they work out cheaper than buying smaller quantities. YMMV etc.

edit:

As for firmware I can't recommend reflashing the stock firmare with flash floppy enough (mentioned above)
Last edited by oPless on Fri Mar 15, 2019 11:51 pm, edited 1 time in total.

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1024MAK
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Re: Putting together a GOTEK, what do I need...

Post by 1024MAK » Sat Mar 16, 2019 7:52 am

A lot of the bits, such as pin headers, DuPont cables, ribbon cable etc. are available from the smaller, hobby friendly electronics suppliers such as ESR.

See also this thread which lists various suppliers.

Mark

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Re: Putting together a GOTEK, what do I need...

Post by BrianR. » Sat Mar 16, 2019 12:04 pm

oPless
You may find that the rotary encoders mounted on a PCB that you are buying will not fit into the Gotek case.
On the Goteks I have assembled, I had to desolder the encoder from the PCB and wire it in directly. In future I will buy the 'bare' encoder.
Mark at RetroClinic sells suitable PCBs for mounting the encoder, and these will fit into the Gotek;
https://www.ebay.co.uk/itm/5x-GOTEK-ENC ... SwK65bs1pR
Last edited by BrianR. on Sat Mar 16, 2019 12:07 pm, edited 1 time in total.

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danielj
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Re: Putting together a GOTEK, what do I need...

Post by danielj » Sat Mar 16, 2019 12:20 pm

You can either desolder them completely or just one half and bend the pcb 90 degrees, hooking the encoder back in with short wires.

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Re: Putting together a GOTEK, what do I need...

Post by oPless » Sat Mar 16, 2019 8:17 pm

BrianR. wrote:
Sat Mar 16, 2019 12:04 pm
oPless
You may find that the rotary encoders mounted on a PCB that you are buying will not fit into the Gotek case.
On the Goteks I have assembled, I had to desolder the encoder from the PCB and wire it in directly. In future I will buy the 'bare' encoder.
Mark at RetroClinic sells suitable PCBs for mounting the encoder, and these will fit into the Gotek;
https://www.ebay.co.uk/itm/5x-GOTEK-ENC ... SwK65bs1pR
I strip the cases anyway, I'm planning to mount mine internally in my Beeb, and my +3 just needs some 3d printed mounts :P

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