Thread: Old 619 screen - Converted to LED. PICTURES included!

Very cool hack. If you're looking to make an LED controller, check out the PICAXE, they use basic are are super easy to program.

write up a tutorial! so many people would love this!
I've got a few questions:
- which color did you get? cool white?
- is there any other brighter alternative? would brighter be too bright?
- any voltage adjustment required?
- would these side way LED work better?
http://www.ledlightsworld.com/side-v...eds-p-133.html

Originally Posted by Punky

write up a tutorial! so many people would love this!
I've got a few questions:
- which color did you get? cool white?
- is there any other brighter alternative? would brighter be too bright?
- any voltage adjustment required?
- would these side way LED work better?
http://www.ledlightsworld.com/side-v...eds-p-133.html

-I got cool white.
-Brighter alternative are too large for the width of the screen. Although, these LEDs are the only one I tried so far. And there is no such thing as too bright.
-No voltage adjustment required at all. The voltage range is between 9-14 volts. Just plug and play.
-Sideway LED would not work. Sideway LED would just take more space and will require different ways to mount the LED. The current LED I have lay flush to the housing.


Sunlight with Touchscreen:




Direct sunlight from rear.


Other than the glare, the screen is much more visible during the day. Significant improvements from my old half-burnt cathodes! FYI Iphone pics does not do any justice.

If I remove the Touch, I am pretty sure the screen is very readable during the day. Maybe a capacitive touch will finish this project off.

Judging by the sunlight pics, I think the stock CCFL screen in the newer Lilliputs (such as the eby701) is brighter. Might be worth it to go with 2 sets of the LED strips instead. One on top, one on bottom. Your old tubes must have been very terrible.

Is there any reason why you went with cool white instead of natural white? The cool white might be a bit too blue-ish.

I'm tempted to find something like this: http://www.neon-led.com/LED-Flexi-St...Strip_5060.htm
and do similar operation on my old 619, i can't find anyone else that sell ones that bright.

how much did you used? would 1 ft be enough?
I'm thinking of getting these which are suppose to be 4000mcd!
http://www.ledlightsworld.com/smd-50...eds-p-135.html

The 10mm width might be too big. I don't see why they don't put the LEDs closer together, but if that's all they've got...

Those last ones are 12mm!

Hey Punky, if you decide to go forth with this you want to potentially combine shipping with me to save some $$ (if the shipping is alot)? The one in your link has very bright LEDs, but they are also spaced apart alot.

A typical 7inch screen is 16cm x 9.5 cm, and I was planning on covering 3 sides (side, top, bottom = 42cm) for maximum brightness. Has anyone considered maybe just buying a bag of the LEDs then soldering them together? Like these guys:

http://cgi.ebay.ca/100-PCS-1206-SMT-...item5636bb3f79

I don't think it'll be worth it to do it one by one, when there're quite cheap just sold in strips.
I'll definitely be interested in splitting the order nobb.
More question for the OP, as said by curiosity these guys are 12mm as supposed to your which was 8mm, in your experience do you think it could be an issue?
Did you put leds in all four sides?
Also, could you give more detail what you did to make the holes for the led to fit?