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I got this led screen out of a dvd player and want to do stuff with it using my arduino.. ? Answered

Picture of

Heres what I have. 
Any ideas?

15 Replies

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iceng (author)2011-11-08

VAC-fluorescent displays do not have a very long life.

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steveastrouk (author)iceng2011-11-10

"The candle that burns twice as bright burns half as long"

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steveastrouk (author)2011-11-08

The square black blob on the board.

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jrh065 (author)steveastrouk2011-11-10

@steve

Other than experience, how can you tell it's a vacuum-fluorescent? I'm curious. It looks like a pain to drive.

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steveastrouk (author)jrh0652011-11-09

If you couldn't already tell by just looking at it - a VFD is quite thick and made of glass, like a vacuum tube, then sniffing with a meter would find a supply of somthing like 45 volts on it. Then of course, the chipset is a dead giveaway too.

Its easy enough to drive. Send commands to each element via SPI - no sweat.

Steve

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steveastrouk (author)2011-11-09

This is how you stop being a noob. You have to start somewhere ;-)

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'earl (author)steveastrouk2011-11-09

:| I think thats a wee bit out of my league..

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'earl (author)steveastrouk2011-11-08

says that yeah. M35500A

Mitsubishi symbol too.

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steveastrouk (author)'earl2011-11-09

Then you need the datasheet for the part, and you can work out how to hang the thing either on SPI bus, or bit-bang the interface. You'll probably find someone else may have written a driver.

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'earl (author)steveastrouk2011-11-09

Im really a noob with this thing haha so I dont really know how to do that :|

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steveastrouk (author)2011-11-08

You may be lucky. See if you can read the chip number on the back of the display.

It ISN'T an LCD, its vacuum-fluorescent display, and it probably needs something like 90 odd volts to make it work.

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'earl (author)steveastrouk2011-11-08

It says on the back of the screen :


"FUTABA
P/N TVFD15OFT004
25U48110SAN
OG

Made in the philippines, "

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'earl (author)steveastrouk2011-11-08

YIKES.. where is that located you think?

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steveastrouk (author)2011-11-08

Anything like "M66004" on the blob ?

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