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Need help finding info on Futuba VFD display.

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MLXXXp:

--- Quote from: XOIIO on March 18, 2016, 04:04:15 pm ---I tried 8N2 as a first go and it seemed really promising, and it is in fact the best out of all the others I tried, but it still has a little bit of a corruption issue, It's so very close, but in the first few characters it gets corrupted, except for sometimes when that is the trailing end, though even then it happens quite a lot.
--- End quote ---

8N2 is the same as the default 8N1 except there will be an extra 1 bit delay between each character, so I looks like bktemp may be correct that the data is being sent to fast and the display can't keep up. Try sending each character individually with a delay between each.

XOIIO:
Well, tried out a 10ms delay and that seems to have done the trick, however writing everything out one letter at a time is, well, less than idea, so I'll fiddle with the jumpers and see if I can drop it to 4800 baud or something like that, and hopefully that would fix the issue?

I also needed to add the delay before the first letter interestingly.

XOIIO:
I just noticed something interesting, I have it print out "testing." and a space, and sometimes the cursor goes one too far and backs up. Very odd.

XOIIO:
Alright, we have a success! 4800 baud works great, however, you need a very slight delay when you first start sending stuff over serial, 10ms works, but without it the first part of the data gets garbled, even if you reset the display.

Now you can print out a whole string of text without issue though, which is awesome. I think I want to use this as an ethernet or wifi connected monitor for the system resource usage of my computer/servers, but that is a long way off, I'd have to get a wifi adapter, but most importantly figure out how to send that data to the arduino, and have it pick it up for the appropriate machine, I bet you can do it with a pretty basic program but C programming for windows is out of my league right now. I think it would probably be a tough first project lol.

edit 2: there are these $3 wifi modules which are pretty good looking, I'd have to remove the headers, but then basically I would just need a little program that would broadcast the computer name, cpu usage, and ram usage, and then figure out how to get the arduino to get that from the network, and just use variables for the cpu and ram percentages, while the rest is just pre-set code looping around. It needs a logic level converter, and I am using tx on the arduino, but since serial only needs common ground and rx or tx, this should be able to work quite well, depending on how well the arduino will work for receiving info from one source then spitting it out the other, hmm.
http://www.ebay.ca/itm/ESP8266-Serial-WIFI-Wireless-Transceiver-Model-Send-Receiver-LWIP-AP-STA-arduino-/322035894894?hash=item4afad5ca6e:g:7PcAAOSwt6ZWT~rf



Edit: damn, I just noticed the typo in the title *palm*

XOIIO:
Man, I need a project for this one, the other displays support custom characters, but even if you had to use the full segment lit up, imagine using this thing as a visualizer, how sweet would that be?

Problem is, with a serial interface, I don't even know how you would do that or if it would even be possible, it would probably need a whole custom board to be able to do that. Damn it would be cool though. Could use the cursors in the bottom row as the baseline.



It's an NEC FMA40x6AA-A, trying to find a datasheet for it or something similar now to at least get the serial pins. I need to grab some sleep though lol.

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