Arduino Forum

Using Arduino => Displays => Topic started by: TheBearF8 on Jun 25, 2014, 11:21 pm

Title: Multiple TFT displays
Post by: TheBearF8 on Jun 25, 2014, 11:21 pm
Thinking of using an Arduino or set or Arduinos to build a Flight Simulator Cockpit.

Would it be possible to have multiple TFT displays  says the 2" or 5"   Non touch displays
from a single Arduino  (e.g. Mega 2560) ?

Or is it going to take one Arduino per screen ?

For reference the Air displays in the top right corner ?
http://www.avsim.com/pages/0504/pmdg_737ng_review/737-overhead_panel.jpg
Title: Re: Multiple TFT displays
Post by: robtillaart on Jun 26, 2014, 10:21 pm
depends on the interface of the TFT and the amount of data updates.

My gut feeling says one Arduino per screen makes sense.
Title: Re: Multiple TFT displays
Post by: Nick_Pyner on Jun 27, 2014, 02:35 am
While it probably feasible, being perhaps merely a matter of sorting out the chip select, you probably won't contemplate the distribution boards and cabling for too long before you decide it isn't a good idea.

The other problem is the speed. No matter how you go about it, you need to check what has gone before to ensure that a Mega is up to this sort of job. It is already clear that the joys of using a larger display come with a noticeable speed hit, and having multiple screens will probably make a bad situation worse.

My requirements are much more humble than anything you have in mind, but I suspect it may turn out that switching to a large LCD is not a proposition.
Title: Re: Multiple TFT displays
Post by: tgsuperspec on Jun 27, 2014, 07:43 pm
You are going to run out of Pins .. One display takes a lot, you could multiplex many to multiple displays but some will need to be unique..

Suggest one Mega per display with cmmunication between..

Title: Re: Multiple TFT displays
Post by: casemod on Aug 30, 2014, 12:01 am

You are going to run out of Pins .. One display takes a lot, you could multiplex many to multiple displays but some will need to be unique..



Hum... Does Chip Select ring a bell?