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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 2nd Jul 2019, 7:15 pm   #221
SiriusHardware
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Location: Newcastle, Tyne and Wear, UK.
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Default Re: MK14 schematic revisions

Happy Birthday!

That does seem astoundingly cheap, it's a shame around half of it is for carriage. It's not that long ago that to have a one-off or small run of PCBs made would have cost well into three figures, that's why nothing I make ever gets further than veroboard.

I'll drop you a PM about this later.
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Old 2nd Jul 2019, 11:29 pm   #222
Timbucus
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Default Re: MK14 schematic revisions

Happy Birthday to you... thanks for sharing that as at least I know what to expect in the way of costs when I eventually get to a PCB with the things I am working on... I I stand by my earlier offer to chip in with the cost and build one if you will permit me...
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Old 16th Jul 2019, 1:32 am   #223
Slothie
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Default Re: MK14 schematic revisions

Hi! Sorry about the radio silence. The boards have arrived and look great, but I managed to hurt my back and have found it painful to sit up let alone scrabble about looking for components
I've offered a couple of you some of my spare components and I'm working on a "price list" as I discover components but it may be a while before I recover enough to find the rest.
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Old 16th Jul 2019, 9:44 am   #224
SiriusHardware
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Default Re: MK14 schematic revisions

Who knew working on MK14 projects would be so dangerous?

(I'm thinking foot / ankle problems last year, eye problems and now back problems). Maybe you need to take up a gentler pastime?

Will look out for a parts list from you presumably via PM or email - anything you can't currently find or reach, I'm sure I can have fun trying to unearth for myself. None of this is super urgent, and certainly not worth you wrenching your back (again) for.
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Old 16th Jul 2019, 10:47 am   #225
Slothie
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Exclamation Re: MK14 schematic revisions

I actually did my back in by lifting shopping bags out of a cart and into my car. Who knew milk and vegetables could be so heavy! I should go back to eating junk food, thats a lot safer!
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Old 16th Jul 2019, 7:56 pm   #226
Timbucus
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Default Re: MK14 schematic revisions

Owch - had a week in bed once getting a sock out of the tumble dryer... hope it is better soon. I have quite a lot of odd parts already as well as I bought several of some chips and passives.
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Old 17th Jul 2019, 3:28 am   #227
Slothie
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Default Re: MK14 schematic revisions

Well I've given this a thorough inspect and aside for a couple of trivial silkscreen errors (Dated 2018 not 2019, U11 label overprinting part no) all seems good.
(Sorry the images are a bit fuzzy I had to crop and compress them to death to get them under the 100k limit. If you want so see bigger images try http://www.ianrolfe.com/page/mk14-rev-vi-boards/)
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Old 17th Jul 2019, 9:26 am   #228
SiriusHardware
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Default Re: MK14 schematic revisions

In time, that minor screen print error may make these ones especially collectable, like banknotes or stamps with similar small errors.
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Old 17th Jul 2019, 8:42 pm   #229
Timbucus
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Default Re: MK14 schematic revisions

Looking good, looks like an MK14 so it is an MK14 - over 40 years later - impressive achievement since that first advert in January 1978... in the Feb 1978 issue of Practical Wireless

I was going to link to American Radio but, the PDF links are broken for that magazine at the moment. So here is a capture...

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