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Need help finding info on Futuba VFD display.

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XOIIO:
Hmm, this is a little strange, so I hooked up, it doesn't have a TX pin oddly, I thought all serial needed RX and TX, even if it was one way, but I can't see any unless they call it something else, which I doubt.

However, hooked in with power, when I first give it power, it flashes the cursor as normal, then, when I plug in the usb uart adapter, it continues to work, but once I disconnect it, the cursor stops flashing, until I either cycle power or plug in the usb uart adapter again, so maybe it is recognizing that there is a serial connection?

I haven't really messed with serial much aside from the i2c lcd adapters for arduino stuff so forgive me if this is something super obvious.

It does have a reset pin, so I figure i might be able to directly talk to it with the adapter but maybe I need to stick an arduino in the way and see if it works with the i2c lcd library (which would be epic)

Edit: tried it with another uart adapter as I recalled the one I had doesn't program arduinos for some reason (but does pass the loopback test), and now when I have it connected, same as always, until I open a terminal program (realterm or arduino monitor), then the cursor stops blinking. Sent it some display codes but no luck.

XOIIO:
Damn, so this display is really dim compared to the other one I have, and two of those have perished, one is completely dead, and the other lost vacuum because the getter has gone white.

The remaining one I have is likely part compatible but a different number, and different jumpers and the like.

It's an M402DD07A, rev b, trying to find that but I could only find an older one.

anyways I'll continue with this one and maybe the other will be the same. I could also try swapping the actual vfl over to see if it works but that's a lot of pins and not worth the time right now.

tom66:

--- Quote from: XOIIO on March 17, 2016, 10:17:06 pm ---Hmm, this is a little strange, so I hooked up, it doesn't have a TX pin oddly, I thought all serial needed RX and TX, even if it was one way, but I can't see any unless they call it something else, which I doubt

--- End quote ---

Bidirectional serial requires RX and TX, but this display won't ever send anything to your controller so only needs an RX pin. Therefore, you should leave the RX pin on your Arduino disconnected.

XOIIO:
Alright, so, this is the setup so far, I tacked on a pro mini with a double sided foam rectangle, crimped on female .01 inch headers on the ends so I can change things around, and this is on the other display but it seems to be working, so far I only have it toggling the test pin, 9.5 seconds on to go through, 5 seconds off, and that's working alright (had to set the blank and reset pins high).

Now I need to figure out what serial data I need to send to get it to display stuff lol

XOIIO:
I just jumped the wires over to the old display and did see my text, along with a jumble of other letters, so now I just need to find the right jumper combination on this board, I can't find jumper 5 anywhere for some reason however, assuming they are the same, the jumpers actually go up to 8 on this one.

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