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More on DIY RiscPC laptop

By Chris Williams. Published: 4th Jan 2005, 22:12:03 | Permalink | Printable

Warning: Contains gory photos of electronics

DIY Laptop photoRico Naf has sent us further details of his DIY laptop, made from a ripped up RiscPC. Rico's portable project won Best Show of Ingenuity of 2004, in a poll of drobe.co.uk readers.

Rico, a Swiss RISC OS user, lists component prices and other details on the web page devoted to his efforts. It wasn't his intention to build a home made laptop at first, but the engineer grew tired of "all the attempts from commercial companies and their excuses".

Describing his project, he says: "The PSU is a switching step down regulator for 5V and a step up for 12V - that's for the motherboard and hard disc. The LCD has its own PSU built in. The charger is made up from four LM317 regulators. It's a bit tricky to explain: basically it consists of two charger modules working in parallel with a by-pass regulator, so that when the unit is operating, it can charge and feed the PSU at the same time."

Rico adds that he carries his RiscPC to and from his workshop every day, but hasn't had a chance to try it out properly in the wilderness yet, as it's a bit nippy where he lives.

Links


DIY laptop webpage - photos, contact details

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Discussion

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Glorious work!

 is a RISC OS UserGollum on 4/1/05 11:42PM
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This really does look exceptionally clever. I wish I had the talent to do something like this :-o .

 is a RISC OS Userflypig on 5/1/05 12:02AM
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At last years GAG (German Archimedes Group) meeting we had one member with a portable Risc PC too. He opted for a bit bigger case (one of those metal photo stuff ones I'd say) which makes it making it a portable device quite a bit easier. Apart from that both solutions look pretty similar to me. So in case you want a portable Risc PC you could consider a bigger case which makes fitting things easier and offers more space to a bigger battery.

 is a RISC OS Userhzn on 5/1/05 7:32AM
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I do like the strong looking business briefcase style.

It looks more practical than my XP laptop set up. I think so because it is such a nuisance unzipping and unpacking all the bits and pieces of the compact common market style ones.

How's the Iyonixs laptop project you mentioned in your "DIY Laptop webpage" link coming along?

 is a RISC OS UserSawadee on 5/1/05 8:06AM
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The DIY IYONIX laptop might be a bit tricky due to the two PCI cards needed. It might be a space problem and you need both.

 is a RISC OS Userhzn on 5/1/05 8:28AM
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I've thought about doing what Rico's done for a while now. What I would love to know is the part number (RS / farnell etc) for the right angled adaptor Rico's used to get the strongarm card to lay flat. I've looked at RS's online catalogue as well as farnell and all the pictures look too simmilar :( Also, come to think about it, has anyone who's tried this found any timing problems with the SA with a longer connector?

 is a RISC OS UserMooJuicey on 5/1/05 10:41AM
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No cheating with an adaptor, the SA-card is hand soldered. Video RAM is the size issue. I don't know how well it will go with a PCI-card. I still have to do the USB-card with many tiny wires.

 is a RISC OS User1234 on 5/1/05 2:19PM
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1234:

It's easier to "cheat" with PCI ;-)

- there's plenty of right angled brackets out there...

 is a RISC OS UserROHC on 5/1/05 3:35PM
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I dont think I'd have the heart to solder 96 wires from the SA board to the motherboard. My soldering's good, but the thought of mucking it up....ouch. I suppose using short lengths of ribbon cable might make it managable though.

The only bit I'd planned to possibly solder would be wires off the motherboard to the screen for the Analogue VGA, save having a cable going round the back to the 15w socket.

 is a RISC OS UserMooJuicey on 5/1/05 8:38PM
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