@NutsAboutAmiga

Voodoo2's link doesn't work...

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www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Regarding the batteries: if you have an old laptop, just disassemble that and see for yourself how the magic is done ;)

Last edited by Vistaus on 21-Nov-2013 at 02:17 PM.

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Proud user of AmigaOS 4.1 on an AmigaONE 500. This is the first Amiga I've ever had so I don't know all the ins and outs of AmigaOS yet, so I'm sorry if I'm asking noob questions and stuff.

@TheDaddy

Yes it does, read his comments again, I think he explains to me that I have to login anonymously.

Last edited by NutsAboutAmiga on 21-Nov-2013 at 02:52 PM.

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@TheDaddy

Charger isn't hard:

http://www.batteryspace.com/Smart-Chargers-for-Li-Ion-/-LiMnNi-/-LiNiCoMn-Batteries.aspx

Battery packs can be bought from same place.

If you need original battery for an existing case you need same circuit as original laptop had, which is not very hard. Li-ion is not rocket science. Constant current up to a certain voltage, constant voltage from there on until current drops below a certain point.

If you want to be extremely fancy you make it balance the cells as well.

I would start with trackpad and keyboard, as those usually connect to a circuit you don't have.


Addendum: I'm stocking up on 18650 li-ion cells/holders and chargers to replace batteries in all my ni-cd and ni-mh flashlights and drills and cordless vacuum cleaners and so on and so forth these days. li-ion has finally become mainstream

Last edited by olegil on 21-Nov-2013 at 02:57 PM.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@all

I've actually been a laptop user for some time and have all my old laptops which I'm willing to butcher in the hopes of getting a Sam440ep into.

I would have absolutely no idea where to start though.

I have a:
Toshiba Satellite L450-11X
Fujitsu/Siemens Amilo L7300
Acer Aspire 5920
Acer Aspire 5742Z

A couple of these are quite deep and at first glance could possibly fit a MiniITX Sam440

To create a prototype the onboard memory, sound and graphics could be used.

THOUGHTS?

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1 AmigaOne G4XE (OS4 Pre-Release Update4)
Minimig
Sam440ep + OS4.1FE
Sam460cr + OS4.1FE

@NutsAboutAmiga

The link wasn't working...weird.

Anyway I'll have a look.

Last edited by TheDaddy on 21-Nov-2013 at 04:59 PM.

_________________
www.loriano.pwp.blueyonder.co.uk

If you know let me know how you'd connect the SAM to the battery and the battery to a charger.

I've done the drawings and I'm finishing the CAD for a case but I am no electronic engineer.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

Then hire one. If you have a picoPSU in there it's fairly easy to connect a chain of 3 or 4 li-ion cells to that, and the charger isn't any more difficult. If you require a connection diagram for that I suggest you hire someone rather than get it off someone on the internet for free. You know, Quality Assurance?

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

Quote:

Then hire one.

If I had the means I would do it. I thought we were sharing ideas...my contribution was going to be the case, but never mind.

Thanks anyway.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

http://benheck.com/03-03-2009/darksiders-xbox-360-laptop-for-thq

They sent some design to "Jim Greeley Signs & Awnings" for fabrication of cases.

http://www.signface.com/

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http://lifeofliveforit.blogspot.no/
Facebook::LiveForIt Software for AmigaOS

@TheDaddy

My idea was simple AND shared, it was the next sentence after the one you quoted. Unfortunately, now that I've had a night to think about it, it's also flawed. The charger delivers constant current or constant voltage, this is only useful for when the battery is NOT connected to a load.

What you want is a DC variant, which they also have (edit: but it can't be used because it doesn't work on input voltages higher than the overvoltage cutoff on a 3-cell pack. Don't see why a DC input should be so hard...). The DC in is connected to the DC to the charger AND through an ideal diode (which is an IC, not a diode) to the picoPSU.

The battery is connected to the output of the charger and through another ideal diode to the picoPSU. Make sure the DC in delivers a higher voltage than the battery can give out.

You also need a shutoff on undervoltage to protect the battery.
http://www.all-battery.com/protectioncircuitmodulepcbfor111vli-ionbatterypack3cellswith12alimit-pcb111v12a.aspx

So, cells (or packs), charger and protection, ideal diodes. And a wall-wart that can deliver enough to charge AND supply at the same time.

And all of this is a grand oversimplification as I haven't checked the input range on the picoPSU itself. It has to be able to work from about 8 to 18V and you'll also need a charger that can work from above 16V and a wall-wart of between 16 and 18. This ensures that the battery output will never be higher than the wall-wart. If it is you need a modified ideal-diode which senses the wall-wart for the shutdown of the battery output.

So start looking for wall-warts, DC-in chargers etc and ideal diode circuits. All of these are used in the li-ion community.

Last edited by olegil on 22-Nov-2013 at 10:02 AM.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

And here's everything you need in one easy to use PCB already made (why didn't I find this yesterday? ):
http://www.batteryspace.com/CMB-for-11.1V-Li-Ion-Battery-Pack-10A-limit-RoHS-Compliant-with-DC-char.aspx

Use that one. With an external 14-18V wall wart. I hope your picoPSU can handle 17V, though.

Edit: And there's a high-input picoPSU which fits this solution perfectly. Either the 80-wi-32 or the 120-wi-25 will work fine with any wall-wart laptop PSU between 14 and 18V here.

That was actually easier than I expected. A bit pricey, though. Total cost about 100USD for those two alone.

Last edited by olegil on 22-Nov-2013 at 10:14 AM.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@TheDaddy

Btw, are you thinking of getting the Sam460 changed to be more low-profile? Cause with double-stacked backplate connectors and a standing-up PSU connector it won't be a very portable laptop

Edit: seems it's only USB which is double-stacked, so that's not a problem after all. But still, removing the PCI/PCIe slots and swapping the PSU connector for a horizontal one on the edge would help a lot.

Last edited by olegil on 22-Nov-2013 at 10:21 AM.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

Even in its current form the SAM460 would still be more portable than the XBOX /PS3 variant we've seen, thickness wise at least.

But to get a slimmer version, like you say, you'd need to get rid of the ATX connector, the USB ports shouldn't be a problem (for the thickness).

I'm all for designing the case, as I said I've already done several sketches and got half CAD ready (for my idea) but we have to have a working SAM460 with a reliable/safe supply of power via batteries and charger and fully working on batteries alone for up to 4-8 hours. And a 17" screen.

If we can get all this stuff together I can sort a case out for it.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

I've never had a 4-8 hour laptop myself, is this REALLY a necessity to proceed with the project?

The good news is that you can use the parts I mentioned there and try it out. Wall-wart connected to battery management card connected to picopsu and batteries. It's about a 100 EUR investment and 2 minutes of cabling

I wouldn't even hesitate about that part. For cooling it's also possible to roll your own cooler using sintered heatpipes, but you need a heat spreader on the fan side as well as the CPU side.

The big question, though: how is the 460 with LVDS support?

I think I've helped you reduce the problem to one of mostly mechanical design now

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

Thank you. It's a big task...

How much power would a SAM460 require to work for 4 hours let's say with an SSD as the drive?
How many Li-Ion batteries would we require?

What about the graphics?

So many questions...

Last edited by TheDaddy on 22-Nov-2013 at 12:48 PM.
Last edited by TheDaddy on 22-Nov-2013 at 12:46 PM.

_________________
www.loriano.pwp.blueyonder.co.uk

@TheDaddy

You will need to connect a AMP meter to the Sam460, normally there is somewhere on the battery printed AMPS Per Hour, or something like that, so there for you can calculate the number of batteries need based on amount AMPS the Sam460 needs, and AMP estimate on the battery.

http://answers.yahoo.com/question/index?qid=20090203191551AAKZ0tp

Last edited by NutsAboutAmiga on 22-Nov-2013 at 01:19 PM.
Last edited by NutsAboutAmiga on 22-Nov-2013 at 01:18 PM.

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http://lifeofliveforit.blogspot.no/
Facebook::LiveForIt Software for AmigaOS

@TheDaddy

Maybe this:

http://www.screentekinc.com/

you need some electronics to go whit the laptop display part.

http://www.ieiworld.com/product_groups/industrial/detail_list.aspx?gid=09049535992720993533&cid=09049605030737850288

You need a display overlay for touch sensing, and some electronics for that.

we have a driver:

http://os4depot.net/index.php?function=showfile&file=driver/input/egalaxtouch4a.lha

Supported Vendor/Product ID:
0eef/0001
0eef/0002
0123/0001

there are two vendors and 3 products, supported by the driver.

Anyway I think it might be easier, modify a monitor.

Last edited by NutsAboutAmiga on 23-Nov-2013 at 01:58 AM.
Last edited by NutsAboutAmiga on 23-Nov-2013 at 01:51 AM.
Last edited by NutsAboutAmiga on 23-Nov-2013 at 01:46 AM.

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http://lifeofliveforit.blogspot.no/
Facebook::LiveForIt Software for AmigaOS

@1Mouse

Quote:

Surely a 440 with flattened RAM would be the ideal board.

Not sure about ideal but certainly the best available choice.

http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=28132&forum=33

Best option, as I already mentioned, would be custom designed replacement board for an existing laptop model.

@NutsAboutAmiga

The 460 has LVDS, no need for a converter board.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.