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Printing a handheld PC

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robertojones Page Icon Posted 2021-05-05 8:37 AM
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Mike -

The hinge parts are screwed into both base and lid (using heat-set thread inserts) - I'll put together a little mockup later today and photograph it.

I'm using FreeCAD at present so my parts are in the native .FCStd format - I'd imagine something like STEP or IGES would be best for getting the parts into your software but I can of course try others. I'll send you the STLs as well but as I'm sure you know these are harder to edit or take dimensions from in CAD.
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mikeschn Page Icon Posted 2021-05-05 10:42 AM
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Yes, stp would work!

Mike...
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robertojones Page Icon Posted 2021-05-05 6:47 PM
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As promised, photos showing my hinge design -

Please excuse the mess of wires - This side carries 2 sets of USB wires as well as two signal lines for the display controls.

The red part of the hinge is made from flexible filament - flexi PLA in this case but TPU would probably work here as well.

The photos show the hinge parts in various states of disassembly - Hopefully you can see from this how the hinge works.





(HPC Hinge 1.jpg)



(HPC Hinge 2.jpg)



(HPC Hinge 3.jpg)



Attachments
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Attachments HPC Hinge 1.jpg (54KB - 0 downloads)
Attachments HPC Hinge 2.jpg (39KB - 0 downloads)
Attachments HPC Hinge 3.jpg (35KB - 0 downloads)
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stingraze Page Icon Posted 2021-08-12 9:14 PM
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I found something that looks like a BlackBerry Passport.

Inspired by N-O-D-E. ( https://www.youtube.com/watch?v=SO4amBc0Tbw )


3D printer files available.
Image from:
https://www.thingiverse.com/thing:3910972

Edited by stingraze 2021-08-12 9:20 PM




(black_handheld.jpg)



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stingraze Page Icon Posted 2021-08-30 10:46 AM
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I thought this was pretty cool.
Sort of like Vaio type U.



https://hackaday.com/2021/08/30/raspberry-pi-and-esp32-s2-team-up-fo...

Edited by stingraze 2021-08-30 11:02 AM
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stingraze Page Icon Posted 2021-09-09 11:35 AM
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There's a board called Radxa Zero, which is like a "Raspberry Pi Zero killer".
It may help in making a tiny footprint Handheld PC.



Official site:
https://wiki.radxa.com/Zero

- 512 MB LPDDR4 RAM, no storage, Ampak AP6212 - US$15
- 1 GB LPDDR4 RAM, no storage, Ampak AP6212 - US$20
- 2 GB LPDDR4 RAM, 8 GB eMMC flash storage, Ampak AP6256 - US$30
- 4 GB LPDDR4 RAM, 16 GB eMMC flash storage, Ampak AP6256 - US$45
Info from:
https://www.notebookcheck.net/Radxa-Zero-A-powerful-Raspberry-Pi-Zer...

According to the above YouTube video, it can be configured up to 128GB.
Not available quite yet, it seems but will be soon.

Edited by stingraze 2021-09-09 11:35 AM
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ntware Page Icon Posted 2021-09-09 3:06 PM
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Nice finding. The problem with these chinese SoC based boards is software. Pretty much all chinese SoC vendors are only focused in Android, leaving none or very little support for linux. Take Allwinner chips for example, none of them has mainline kernel support, which is a big fiasco. The community works hard doing reverse engineering and wizardry to port drivers to mainline kernel, but they're not the chip manufacturers, so it is a super hard task, and once done it is definitely not the most optimized option. In the end, a very good chip may run with 50% or 60% of its power just because it doesn't have the right drivers.
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robertojones Page Icon Posted 2021-09-09 6:48 PM
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stingraze - 2021-09-09 11:35 AM

There's a board called Radxa Zero, which is like a "Raspberry Pi Zero killer".
It may help in making a tiny footprint Handheld PC.



Nice find! I do like how many RAM / storage options they offer. The spec is quite impressive for the size too. I can't seem to see any sort of power management circuitry on the board (please correct me if wrong) so it looks as though, like the Raspberry Pi, power management / battery handling is left to the user / builder. Like ntware I do have some doubts about software support, mostly due to getting burnt with two different Allwinner-based boards (Pine64 and OLinuxino) but I'll be watching this one with interest.

Either way, it can't hurt to have more options...

My own project is progressing very slowly now, I'm having to incorporate a new battery management board (yet again) so loads of packaging /wiring considerations. I'm optimisitic, but if I can't make Pi+peripherals work reliably with an 8A supply I think it may be time to give up.
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stingraze Page Icon Posted 2021-09-10 3:43 AM
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ntware - 2021-09-10 12:06 AM

Nice finding. The problem with these chinese SoC based boards is software. Pretty much all chinese SoC vendors are only focused in Android, leaving none or very little support for linux. Take Allwinner chips for example, none of them has mainline kernel support, which is a big fiasco. The community works hard doing reverse engineering and wizardry to port drivers to mainline kernel, but they're not the chip manufacturers, so it is a super hard task, and once done it is definitely not the most optimized option. In the end, a very good chip may run with 50% or 60% of its power just because it doesn't have the right drivers.

Thanks! Yeah, you're right about the lack of support for Linux.
But I've discovered that the Amlogic S905Y2 SoC used for this board is by a fabless semiconductor company based in Santa Clara, California. Like other SoC, TSMC and other makers seem to be making it.

Their site: https://www.amlogic.com/

Seems like AMPAK is a Taiwanese vendor, and the AP6212 WiFi / Bluetooth chip is by them.
Datasheet:
https://datasheetspdf.com/pdf-file/1100555/AMPAK/AP6212/1

It will be good to be able to update the spec in a Raspberry Pi Zero formfactor.





Edited by stingraze 2021-09-10 3:47 AM
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stingraze Page Icon Posted 2021-09-10 3:46 AM
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robertojones - 2021-09-10 3:48 AM

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stingraze - 2021-09-09 11:35 AM

There's a board called Radxa Zero, which is like a "Raspberry Pi Zero killer".
It may help in making a tiny footprint Handheld PC.



Nice find! I do like how many RAM / storage options they offer. The spec is quite impressive for the size too. I can't seem to see any sort of power management circuitry on the board (please correct me if wrong) so it looks as though, like the Raspberry Pi, power management / battery handling is left to the user / builder. Like ntware I do have some doubts about software support, mostly due to getting burnt with two different Allwinner-based boards (Pine64 and OLinuxino) but I'll be watching this one with interest.

Either way, it can't hurt to have more options...

My own project is progressing very slowly now, I'm having to incorporate a new battery management board (yet again) so loads of packaging /wiring considerations. I'm optimisitic, but if I can't make Pi+peripherals work reliably with an 8A supply I think it may be time to give up.

I'm sorry to hear you burnt two boards.

I want to hook up a system so I can telnet / ssh into a Raspberry Pi Zero etc. from a H/PC like Sigmarion / Sigmarion 3 and use that SBC resource to do something. I've been trying to do that, but haven't had the energy to finish it.
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stingraze Page Icon Posted 2021-09-21 11:35 AM
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Here's something I found today.

It's a 3D printed / assembled home assistant terminal, but it's beautiful.

Picture from Twitter at:
https://twitter.com/jeffeb3/status/1439771940412133376

-stingraze

Edited by stingraze 2021-09-21 11:36 AM




(home_assistant_terminal.jpg)



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CE Geek Page Icon Posted 2021-09-22 4:56 AM
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That's some keyboard layout there.
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joval Page Icon Posted 2021-09-22 9:32 PM
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stingraze - 2021-09-09 3:35 AM

There's a board called Radxa Zero, which is like a "Raspberry Pi Zero killer".
It may help in making a tiny footprint Handheld PC.



Official site:
https://wiki.radxa.com/Zero

- 512 MB LPDDR4 RAM, no storage, Ampak AP6212 - US$15
- 1 GB LPDDR4 RAM, no storage, Ampak AP6212 - US$20
- 2 GB LPDDR4 RAM, 8 GB eMMC flash storage, Ampak AP6256 - US$30
- 4 GB LPDDR4 RAM, 16 GB eMMC flash storage, Ampak AP6256 - US$45
Info from:
https://www.notebookcheck.net/Radxa-Zero-A-powerful-Raspberry-Pi-Zer...

According to the above YouTube video, it can be configured up to 128GB.
Not available quite yet, it seems but will be soon.


Great find, Stingraze. Wow, quad core cpu in such a small form factor... should easily fit into Jornada docking base ( with battery too) and only 3.5 watts max power consumption. Predict RasPi will follow in their footsteps eventually.

Reviewed here : https://www.youtube.com/watch?v=HS6MIM3bol4&t=7s with TwisterOS. Emmc issue though.

Joval
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stingraze Page Icon Posted 2021-09-23 12:52 AM
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Thanks!
I also found an unofficial "Raspberry Pi 3B mini". $17, so the price is good.

https://www.hackster.io/news/highly-unofficial-raspberry-pi-3b-mini-...
https://www.cnx-software.com/2021/09/22/raspberry-pi-3-mini-board-ca...

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