584Views15Replies

Author Options:

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

Heres what I have. 
Any ideas?

Discussions

0
None
iceng

6 years ago

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

0
None
steveastroukiceng

Answer 6 years ago

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

0
None
steveastrouk

Answer 6 years ago

The square black blob on the board.

0
None
jrh065steveastrouk

Answer 6 years ago

@steve

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

0
None
steveastroukjrh065

Answer 6 years ago

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

0
None
steveastrouk

Answer 6 years ago

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

0
None
'earlsteveastrouk

Answer 6 years ago

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

0
None
'earlsteveastrouk

Answer 6 years ago

says that yeah. M35500A

Mitsubishi symbol too.

0
None
steveastrouk'earl

Answer 6 years ago

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.

0
None
'earlsteveastrouk

Answer 6 years ago

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

0
None
steveastrouk

6 years ago

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.

0
None
'earlsteveastrouk

Answer 6 years ago

It says on the back of the screen :


"FUTABA
P/N TVFD15OFT004
25U48110SAN
OG

Made in the philippines, "

0
None
'earlsteveastrouk

Answer 6 years ago

YIKES.. where is that located you think?

0
None
steveastrouk

6 years ago

Anything like "M66004" on the blob ?