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Oldbitcollector
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  		   Posted 2/6/2008 6:07 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
Changed to the link to the hack... Everything is there.

OBC

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Baggers
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  		   Posted 2/6/2008 6:24 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
Great hack OBC, I liked the demo you were using on the website lol :D nice 1.
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Harley
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  		   Posted 2/6/2008 8:07 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
OBC,

Have you checked for how many char/line and lines you can fit on that screen? Looks to be around 40 char/line by 12 lines or so.

Don't know how readable it is; when I enlarged view it wasn't very clear. What is the char size in pixels (height by width)?

Since I have one of those keypads, I can sense that player LCD is quite small. Good job at hacking the unit. Thanks for the view.

Harley Shanko

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Rayman
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  		   Posted 2/6/2008 9:10 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
Are you guys using interlaced or non-interlaced drivers? See any screen flicker?
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Mike Cook
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  		   Posted 2/6/2008 9:18 AM (GMT -8)    Quote This PostAlert An Admin About This Post.

I'm using the 'standard' TV_TEXT object as delivered with the Propeller Tool. I've got a little 'video noise' on my display, but I believe this is due to the non-shielded hook-up wire that I'm currently using. Otherwise the display is crystal clear. @40 x 13 the text is tiny but readable.
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Oldbitcollector
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  		   Posted 2/6/2008 10:28 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
I'm using the AiGeneric 40x24 video driver. (in PropDOS) Everything is a little tiny (expected) but extremely readable.

OBC

New to the Propeller?

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Oldbitcollector
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  		   Posted 2/6/2008 6:31 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
I can't get a tighter shot than this, but this is a shot with a DVD running.
My camera can't focus as tight as a shot at PropDOS, but I can read it clearly and there is no flicker.

OBC

Edit
Added a shot of propDOS.. My camera just can't focus this close (old), but
I'd say it's about twice as clear as the picture.

New to the Propeller?

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Post Edited (Oldbitcollector) : 2/7/2008 2:42:09 AM GMT


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Rayman
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  		   Posted 2/6/2008 6:42 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
I wonder how long the battery would last playing an actual mini-dvd movie... All the new portable dvd players seem to advertize their play time. But, not a word in the write up for this thing...
I think I could DVDShrink a video down to the resolution of this monitor with no noticable quality loss and fit onto a mini-dvd. But, I bet the battery wouldn't last for 2 hours...
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bambino
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  		   Posted 2/6/2008 6:53 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
It would be close. I wore out my scooby-Doo flick. Plus showing it off to others, Plus scopeing out the pins. I'm still on my first Charge.
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bambino
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  		   Posted 2/6/2008 6:56 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
I'm torn now. I don't know if I should order me a TQFP to put in mine (OOh the waiting on UPS!) or just use my spin stamp(No waiting)
I already have a board cut and mounted to the sockets where the motor assembly was.
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Oldbitcollector
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  		   Posted 2/6/2008 7:25 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
PICS!! :)

I'm working up to a timed test of both the prop and monitor working off the battery.

OBC

New to the Propeller?

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rjo_
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  		   Posted 2/6/2008 7:38 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
Absolutely sweet... now, let's consider those motors:)

Rich
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Oldbitcollector
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  		   Posted Yesterday 6:02 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
Baggers said...
Great hack OBC, I liked the demo you were using on the website lol :D nice 1.


Hey Baggers,

The pic made hackday... :)

OBC

New to the Propeller?

Getting started with the Protoboard? - Propeller Cookbook
Got an SD card? - PropDOS
A Living Propeller FAQ - The Propeller Wiki
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Mike Cook
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  		   Posted Yesterday 6:28 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
Well I forgot and left mine on the other night. With the DVD chip removed and the Propeller Proto Board running off a seperate supply the screen ran for about 12 hours. I didn't totaly discharge the battery so it can probably go a bit longer than that.
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JT Cook
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  		   Posted Yesterday 7:02 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
That is pretty awesome, I may have to pick on up! I do have a question though, would it be feasable to remove the top half/the screen, give it external power and video source and still get a picture?
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Oldbitcollector
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  		   Posted Yesterday 7:15 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
By hooking to the data pin found on the back of the LCD board, I strongly suspect the only requirements left are power and ground. I'm heading this direction..

(Why can't we have 36 hour days? More time for Propeller stuff...:)

OBC

New to the Propeller?

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Rayman
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  		   Posted Yesterday 7:31 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
My two units just arrived! I'm thinking about using the earphone jack as either video or keypad input... Definitely want to rip out the DVD reader (although it seems a shame...) and insert Prop. Maybe there's room to put the battery charger circuit in there too...

Think we can connect the buttons to the Prop?
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Baggers
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  		   Posted Yesterday 7:53 AM (GMT -8)    Quote This PostAlert An Admin About This Post.
rofl, it's getting about isn't it lol.
Oldbitcollector said...
Baggers said...
Great hack OBC, I liked the demo you were using on the website lol :D nice 1.


Hey Baggers,

The pic made hackday... :)

OBC

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Harley
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  		   Posted Yesterday 3:01 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
OBC,

Was looking at your 'dreaming_maybenot' picture and realized how small the unit is. The keypad measures about 3.8" Yeah, pretty small monitor screen for my ol' eyes.

And what is 'hackday'? I googled but it took me to some strange place. Maybe the URL is more complex that what I imagine.

Good work on getting the mini monitor working well. yeah

Harley Shanko

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Paul_H
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  		   Posted Yesterday 3:04 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
OBC,

Nice plug for your hack on www.hackaday.com !

BTW - I ordered mine yesterday. I'm planning to put it on my UAV as a local monitor before takeoff, though I'll need to see how far it can be stripped down for weight.

Paul
www.pnav.net
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Oldbitcollector
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  		   Posted Yesterday 4:05 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
Little off topic,

There is a very tiny 3v motor that moves the optics. Decent power too.
It's the one connected to the red/white leds. (so cut them near the board)
These might be interesting for bots later.. :)

OBC

New to the Propeller?

Getting started with the Protoboard? - Propeller Cookbook
Got an SD card? - PropDOS
A Living Propeller FAQ - The Propeller Wiki
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Oldbitcollector
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  		   Posted Yesterday 4:58 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
Stage two:

Turning it into a real microcomputer... :)
(I've got a little sanding to do yet... )


Anyone see any problems with running the prop at 3.6v_dc 2.5a?

OBC

New to the Propeller?

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Rayman
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  		   Posted Yesterday 5:12 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
That is a very interesting idea (chopping up the proto board)! Does the existing board really run at 3.6 V? I assumed there was a voltage regulator to 3.3V in there somewhere...
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bambino
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  		   Posted Yesterday 5:28 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
Look at the pic of the hirose connector. There is a 3.3 and a 5V line. No idea what there running or how much juice can be pulled off of them.
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bambino
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  		   Posted Yesterday 5:36 PM (GMT -8)    Quote This PostAlert An Admin About This Post.
The idea of using a spin stamp is starting to worry me. Would 3.6 be enough to keep its regulator happy, and for how long?
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