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Gabriel
Posts: 73
Joined: Wed Aug 10, 2011 5:43 pm
Location: France

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 7:36 pm

Hello,
By googling for hackable devices I found an interesting software hack that allow you to use a digital photo frame based on a Sintronix st2205u chipset as a usb LCD screen (1,5 inch, 128*128 pixels, with colors).
This kind of digital photo frame cost about 5$ (and sometimes with free shipping !).
Won't it be a perfect mini-display for a 25$ computer ?
note : I THINK that this hack will be compatible with the raspberry pi but I can't ga
uantee anything ! (it's opensource so we will be able to recompile software).

It's quite simple because it's a software hack : you don't need to open the device.
The hack consists in changing the firmware of the device with an usb connection to a computer running linux ;) .
After changing the firmware it is possible to run lcd4linux : a program that displays information about computer system, or to run mplayer and display video on the DPF. It is even possible to use the DPF as linux terminal (with a computer and a keyboard of course).
So, how to transform a 5$ DPF into a 1,5" display ?
Here are the links I gathered :
- The main tutorial : http://forum.doozan.com/read.php?2,2435
- The hacker's (Sprite, thanks to him) website : http://spritesmods.com/?art=picframe
- The site of the Pictframe project : it's a bit harder because the wiki is down Sprite has fixed the wiki so we can use it again ! http://picframe.spritesserver....../Main_Page
- http://neophob.com/2009/01/pho.....libst2205/ (the tool for flashing a new firmware)
- lcd4linux : http://ssl.bulix.org/projects/lcd4linux/
- how to use a hacked DPF as a terminal : http://jeff.doozan.com/debian/.....5term.html I love this page, thanks to the author(s) !

Thanks to NoshBar for his links, he got midnight commander and doom working on this kind of screen (using a biffer board)!
- midnight commander : http://noshbar.xtreemhost.com/.....index.html
- doom : http://noshbar.xtreemhost.com/.....index.html

Before buying anything make sure that st2205u chipset is present : if a DPF is plug and play (and so act like an usb key) there will be another chipset in , wich will not alllow hacks so you will need a 1,5 digital photo frame sold with a software CD.
I hope I haven't forgoten anything, I bought a compatible photo frame and i will receive it soon. I have a lot of projects with a raspberry pi + a photo frame : a webradio player, an alarmclock, a rss reader, ect...

ps: I'm looking for cheap( less that 40$) hackable devices.
My home-made case : http://goo.gl/nprcI ; My presentation http://goo.gl/5hSar et en français : http://goo.gl/28Vif ; Please think to the FAQ and to the Wiki

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crundy
Posts: 310
Joined: Fri Aug 12, 2011 7:47 am

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 10:05 pm

Oh nice! I have an old digital picture frame which isn't in use and would be perfect for this. I'll read up on your links tomorrow. Cheers!

gerits
Posts: 50
Joined: Thu Aug 04, 2011 11:50 am

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 10:26 pm

That is really nice, I do am surprised that I've never heard of this before. I hope to find a compatible device somewhere, otherwise I would have to use a 12" display that I've laying around, and I have better uses for that display.

Have you found a compatible device in a webshop?

Charcoal
Posts: 1
Joined: Tue Aug 02, 2011 8:20 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 10:51 pm

I have no idea if this would be remotely possible, but anyway, could you carve up a phone's lcd screen and connect it to the raspberry pi?

Svartalf
Posts: 596
Joined: Fri Jul 29, 2011 6:50 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 11:01 pm

Quote from Charcoal on August 16, 2011, 23:51
I have no idea if this would be remotely possible, but anyway, could you carve up a phone's lcd screen and connect it to the raspberry pi?

Possible but Unlikely. I don't think the R-Pi has a digital flatpanel option, so you'd have to cobble up an HDMI interface to the small screen. As an educational exercise with loads of cash, it'd be doable- otherwise, you're really looking for something else.

amiga65
Posts: 70
Joined: Wed Jul 27, 2011 10:59 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 16, 2011 11:54 pm

Found this while looking for a screen to hack Myself. This looks to be doable.
http://www.bit-tech.net/moddin.....sone_lcd/1

And a quote from the article.
"Introduction by macroman
There are many modded cases which had had simple LCD or VFD displays fitted to add an element of "coolness". These displays are generally somewhat limited in their capabilities and often consist of just a few lines of alphanumeric characters. Now you can go that extra mile and take "coolness" into the "chilly" realms by fitting a "real" graphic LCD display just like the one on your desktop, only smaller. I am talking about the add-on LCD screen for the Sony PSone Playstation games console. This display has a viewable area of approximately 5 inches, has a resolution of 640 x 480 and is a gift to modders everywhere. Here are a few features of this unit..."

obarthelemy
Posts: 1399
Joined: Tue Aug 09, 2011 10:53 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Aug 17, 2011 5:36 am

it says the PSone LCD has A/V input. shouldn't that ve directly connectable to the Pi's composite output ?

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: A 5$ 1.5" LCD screen for all your projects !

Wed Aug 17, 2011 7:41 am

Quote from Svartalf on August 17, 2011, 00:01
Quote from Charcoal on August 16, 2011, 23:51
I have no idea if this would be remotely possible, but anyway, could you carve up a phone's lcd screen and connect it to the raspberry pi?

Possible but Unlikely. I don't think the R-Pi has a digital flatpanel option, so you'd have to cobble up an HDMI interface to the small screen. As an educational exercise with loads of cash, it'd be doable- otherwise, you're really looking for something else.

The SoC GPU does have a DSI interface, and is used in many mobile phones world wide to drive the LCD. However, each LCD requires a new driver on the GPU, along with (often) very specific cabling etc. The DSI interface is available on the prototype, but I don't think will be there on the Raspi Pi release board as no-one would be able to use it anyway as it would require recompiles of the binary blob. Also DSI is getting a bit old hat now.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
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crundy
Posts: 310
Joined: Fri Aug 12, 2011 7:47 am

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Aug 17, 2011 9:20 am

There are lots of 7" screens designed for cars as rear-view monitors that might work as well.

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Gabriel
Posts: 73
Joined: Wed Aug 10, 2011 5:43 pm
Location: France

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Aug 17, 2011 9:25 am

Quote from gerits on August 16, 2011, 23:26
That is really nice, I do am surprised that I've never heard of this before. I hope to find a compatible device somewhere, otherwise I would have to use a 12" display that I've laying around, and I have better uses for that display.

Have you found a compatible device in a webshop?

Yes, unfortunatly it was shipped from USA whereas I live in France. I had to find one with international shipping :(
http://cgi.ebay.fr/ws/eBayISAP.....1439.l2649
It cost me 12€, I know it's expensive but that's the only one I found (with shipping to France) !

if you live in the US :
I'm not sure for :
http://cgi.ebay.com/Coby-1-5-I.....20ba40d320

I'm more sure (but I can't garantee anything) for :
http://cgi.ebay.com/Coby-1-5-D.....45fc4412f0

http://cgi.ebay.com/Coby-1-5-I.....1e62b3281d

http://cgi.ebay.com/DIGITAL-PH.....5adab47506

http://cgi.ebay.com/Innovage-P.....27bd459acf

http://cgi.ebay.com/SHIFT-DIGI.....3cb3742405

But go to this page : http://webcache.googleusercont......google.fr to have a list.


Your best bets right now (November 2010) are probably the:

Coby DP151SX provided that you can absolutely confirm you're getting the correct version of this model with the packaging information on that page (read: eBay and talking to the seller, not Amazon which may be using dated stock pictures),
The Coby DP152 as it does not appear to have (m/any?) hardware revisions yet,
The Innovage Shift3 Fat because it is easily identifiable and common... if you don't mind the battery icon.
Any photo keychain that looks similar to the Shift3 Fat, as these would be Innovage Generics. (Sharper Image, Digital Photo Key Chain, multiple rebrands) The important thing to note is the chrome back half. If the packaging mentions a CD and the keychain itself has a chrome back half, you're pretty sure to have a hackable model.
My home-made case : http://goo.gl/nprcI ; My presentation http://goo.gl/5hSar et en français : http://goo.gl/28Vif ; Please think to the FAQ and to the Wiki

Svartalf
Posts: 596
Joined: Fri Jul 29, 2011 6:50 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Aug 17, 2011 6:15 pm

Quote from jamesh on August 17, 2011, 08:41
The SoC GPU does have a DSI interface, and is used in many mobile phones world wide to drive the LCD.


I stand corrected... :D

magnitux
Posts: 16
Joined: Wed Aug 03, 2011 4:16 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Thu Aug 18, 2011 5:42 pm

Me my project would be to run a terminal with a dpf like to link:
http://jeff.doozan.com/debian/.....5term.html
It's cool I really want to do.

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Gabriel
Posts: 73
Joined: Wed Aug 10, 2011 5:43 pm
Location: France

Re: A 5$ 1.5" LCD screen for all your projects !

Thu Aug 18, 2011 8:05 pm

I think that it will be possible to run lcd4linux hack on the r-Pi, so emulating a terminal shouldn't be more complicated !
I should have post more pics on this topic.
My home-made case : http://goo.gl/nprcI ; My presentation http://goo.gl/5hSar et en français : http://goo.gl/28Vif ; Please think to the FAQ and to the Wiki

magnitux
Posts: 16
Joined: Wed Aug 03, 2011 4:16 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Fri Aug 19, 2011 1:55 pm

Yes it's possible and it's a great opportunity for create a very discret modulable and low cost mid.

masterprime
Posts: 1
Joined: Fri Aug 19, 2011 1:20 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Fri Aug 19, 2011 2:26 pm

If you've got the bones:
http://www.vuzix.com/consumer/
or any head mounted display with HDMI.

magnitux
Posts: 16
Joined: Wed Aug 03, 2011 4:16 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Fri Aug 19, 2011 6:32 pm

The idea is great but too expensive
I had the idea to use a 1.5 screen for use console tools like (lynx alsaplayer python) and many other cli program. And create a device concealed in a workbook for students bored.

magnitux
Posts: 16
Joined: Wed Aug 03, 2011 4:16 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Mon Aug 22, 2011 3:58 pm

this lcd 2.4 screen is compatible with lcd4linux on debian(seagate dockstart)
http://www.pearl.de/a-HPM1184-5618.shtml
but i dont no for st 2205 term
http://hfr-rehost.net/fullsize.....47826.jpeg
it is a good pictures of lcd4linux

gerits
Posts: 50
Joined: Thu Aug 04, 2011 11:50 am

Re: A 5$ 1.5" LCD screen for all your projects !

Mon Aug 22, 2011 6:23 pm

To bad the shipping costs are that high, I just refuse to pay more for the shipment then I have to pay for the device self.

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Gabriel
Posts: 73
Joined: Wed Aug 10, 2011 5:43 pm
Location: France

Re: A 5$ 1.5" LCD screen for all your projects !

Thu Aug 25, 2011 8:35 pm

I received my photo frame DP-152 today, I have already hacked it :
- I downloaded the good files
- I recompiled the hack (the DP-152 is not supported without a little code modification)
- Plugged the device
- ran the script
And here it is , it works on a x86 computer with LCD4linux !
Tomorrow I will try to use this photo frame as a terminal for my NAS : the NS-K330
You can found a review of this 25€ NAS here : http://www.science2day.info/20.....u-nas.html
and in french here : http://nerdget.blogspot.com/20.....de-30.html
This NAS is based on a 300mhz cadenced ARMv4 cpu and can chroot debian, so it's somewhat similar to the raspberry pi (and he has only 32MB of ram)
I will post pics if it works ;)
My home-made case : http://goo.gl/nprcI ; My presentation http://goo.gl/5hSar et en français : http://goo.gl/28Vif ; Please think to the FAQ and to the Wiki

fredward
Posts: 2
Joined: Tue Aug 30, 2011 6:36 am

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 30, 2011 8:00 am

I love this idea of doing this with the keychain but was surprised to hear no one comment on the psone lcd idea

Any ideas on how well that would work?

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Gabriel
Posts: 73
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Location: France

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 30, 2011 10:07 am

After trying several times, I found a way (for this device of course) :
- I connected in SSH
- I chrooted debian http://code.google.com/p/snake.....ian_Chroot
- I edited /etc/resolv.conf with my DNS
- I edited /etc/apt/source.list
- I followed the instruction of Jeff Doozan's tutorial.
But I still have a curious problem : on this ARM device the program lcd4linux display curious letters, as if it was an encoding (I mean like utf8 , in french we say "encodage", I hope it's the good word) problem...
There was no problem with my x86 notebook.
On the other hand pictures are perfectly displayed ! (if there is no transparency)
However the st2205term program don't work (but I didn't try much)





My home-made case : http://goo.gl/nprcI ; My presentation http://goo.gl/5hSar et en français : http://goo.gl/28Vif ; Please think to the FAQ and to the Wiki

DanielSilva
Posts: 71
Joined: Sun Aug 28, 2011 7:07 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Tue Aug 30, 2011 2:28 pm

Quote from fredward on August 30, 2011, 09:00
I love this idea of doing this with the keychain but was surprised to hear no one comment on the psone lcd idea

Any ideas on how well that would work?

Pretty easy tbh if you don't mind soldering a few things, just hook it up to the composite port of the RPi. There are hundreds of how-to's explaining how to do composite->vga adaptors and you can easily find the psone lcd schematics.


Arbelzapf
Posts: 9
Joined: Tue Sep 06, 2011 9:31 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Sep 07, 2011 12:26 am

Could these be opened up and built into one case together with the R-Pi?

http://mp4nation.net/catalog/3.....p-571.html

http://mp4nation.net/catalog/7.....p-570.html

If yes (and speaking as a total noob on stuff like this): how dificult would it be to have both the R-Pi and the display use the same power supply? I'd love to experiment a bit with these boards and I figured those screens could be a usable and cheap option for a small display. It's only composite but on the other hand, it saves the HDMI port for video-out (assuming that works)

tnelsond
Posts: 120
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Contact: Website

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Sep 07, 2011 1:17 am

Hey, a little cheap usb lcd screen would be great. You could use the little screen when using the device without a tv, and then plug it in to a tv when you get to one, but still have the lcd attached and working. It would be like a dual screened device.

amiga65
Posts: 70
Joined: Wed Jul 27, 2011 10:59 pm

Re: A 5$ 1.5" LCD screen for all your projects !

Wed Sep 07, 2011 1:47 am

Quote from Arbelzapf on September 7, 2011, 01:26
Could these be opened up and built into one case together with the R-Pi?

http://mp4nation.net/catalog/3.....p-571.html

http://mp4nation.net/catalog/7.....p-570.html

First off good find :)
Second My best guess is yes. I'm sure the case on the display is only big enough for the display, so You are looking at a new case (just a guess You never know till you open it)

If yes (and speaking as a total noob on stuff like this): how dificult would it be to have both the R-Pi and the display use the same power supply? I'd love to experiment a bit with these boards and I figured those screens could be a usable and cheap option for a small display. It's only composite but on the other hand, it saves the HDMI port for video-out (assuming that works)
Again yes should be just splice in the proper connecters paying close attention to the polarity of each. but You may want to increase the wattage of power supply especially if You add a hdd or dvd/cd player.
I hope that 7" at that price is around for a bit.

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