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Forum Index : Microcontroller and PC projects : PicoMite VGa PCB Release version

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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 5731
Posted: 01:10pm 11 Jan 2022
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No faults  








PicoMiteVGA.zip

ZIP contains a ZIP with the gerbers ready to send to JLC
Bill of materials, DesignSpark design files and printable schematic

NB: lots of bits on the PCB are optional depending on use - see BOM for details
Edited 2022-01-11 23:18 by matherp
 
Plasmamac

Senior Member

Joined: 31/01/2019
Location: Germany
Posts: 210
Posted: 08:28am 12 Jan 2022
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Thanks  for your work . Mfg
Plasma
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 1529
Posted: 09:07am 12 Jan 2022
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Very nice board, Peter. :)

My mini version is currently partially back to design stage to make sure that it fits both variations of the 90x70x28 box that I have. It would be a pity to make it specific to one box, especially as you don't know which version will turn up!
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 5731
Posted: 11:25am 15 Jan 2022
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Minor tweak to better centre the cut-out for the box

PicoMiteVGA.zip
Edited 2022-01-15 21:27 by matherp
 
thwill

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Joined: 16/09/2019
Location: United Kingdom
Posts: 2089
Posted: 11:25am 21 Jan 2022
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Hi Peter,

A couple of questions on the BOM if I may:

For the SD card does R42 2R2 resistor really need to be 1% metal-film ? I already have the same value in 5% carbon-film. I have generally bought the carbon-film for hobbyist dicking about because I can read the colours easier.

For the Audio C25 and C26 I have 47 nf in a different (coloured) package, white and looking most like this https://www.ebay.co.uk/itm/142777705141 but with the marking "47n J100", are these any good to me - I've no idea where they came from.

Best wishes,

Tom
CMM2 Welcome Tape, Creaky old text adventures
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 1529
Posted: 12:12pm 21 Jan 2022
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The type of resistor for the 2R2 doesn't matter.

Your capacitors will be fine too.

None of these components are doing a precision job. It's nice (but not critical) if they will fit in the space though. :)
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
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