Questions on Newhaven touch screens

T Chap

I have an application that could use the Newhaven or similar touch screen. I will order the 4.3 or 5.0 this week to experiment with, but had a few questions first.

The screen graphics would be mostly for graphics that I would create, including buttons of different sizes, the ability to change a page and use a numeric keypad, also the need to display text in certain areas similar to the ease of displaying text on a Parallax serial 2x16. Basically, a user interface with text feedback, or possibly text/graphic feedback.

My program is already maxed out, so adding anything of any bulk will not work, but adding another Prop is ok for the purpose of managing graphics. In my case, there could be up to 3 screens, and an ideal scenario would be to have a Prop at each screen(remote). For updating the remote screens(Prop eeprom), I can imagine a pc/mac GUI that transfers the .eeprom to the main Prop, which then transfers the data to the remote screen(s) and overwrites the new boot program on any 'screen' attached. The remote screen can have a USB miniB in case of emergency update due to a transfer crash from the main Prop.

The remotes would be ideally connected via RS485, which I already do with remote Props. I2C with buffers is an alternative also, since I already have good luck with long distance I2C using buffers and CAT5.


At some point, a nice graphic from a jpg or other image source would be nice to add as an optional look.

I assume this is all doable, but was hoping to get any suggestions on where to start with creating the basic graphics and buttons to experiment with.

Rayman

If you just need simple graphics, like you get with the standard VGA driver, you might try our NH4 adapter, which makes it easy to connect the Newhaven 4" or 5" screen to the Propeller.

If you want to show a photo, then you probably want an SSD1963 based solution such as the one Newhaven sells or the DVI Shield+4.3" plugin that we sell...

jazzed

Rayman wrote: »

If you just need simple graphics, like you get with the standard VGA driver, you might try our NH4 adapter, which makes it easy to connect the Newhaven 4" or 5" screen to the Propeller.

If you want to show a photo, then you probably want an SSD1963 based solution such as the one Newhaven sells or the DVI Shield+4.3" plugin that we sell...

Just curious about we/our. Who is that?

Rayman

Uh, I mean us here at Rayslogic.com... But, this seems off-topic and this isn't our thread...

T Chap

Thanks, I will order some of your drivers tomorrow and try the screens out.

jazzed

Rayman wrote: »

Uh, I mean us here at Rayslogic.com... But, this seems off-topic and this isn't our thread...

You've posted that plural many times and I never caught the relationship.

Rayman

TChap, for a quick GUI, you could also try VisualSpin... It can work with resistive 4.3" touchscreens as is.

Then, you can design buttons and screens on your PC and then program them for the Prop.

VisualSpin is still alpha or beta, so it's not perfect, but it might help you get something fast...

Rayman

Also, just so you know... The NH4 adapter works "out of the box" with resistive touchscreens.
But, for capacitive multi-touch, you'll also need the tiny 6-pin adapter and some wires to connect the flex-cable tail...

You can see what I mean in the photo on this page:
http://forums.parallax.com/showthread.php?141277

T Chap

Thanks, I don't really care about multitouch, so if everything else is the same, then I will just order this:

http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=NHD-4.3-480272MF-ATXI%23-T-1

I sent email regarding the NH4.

Don M

Ray- Where do I find "Visual Spin"?

Rayman

T Chap, yes, that's the right one.
BTW: If some of your screens don't need touch, there are touchscreen-less screens at Rayslogic.com...

Don, it's here: http://www.rayslogic.com/propeller/programming/VisualSpin/VisualSpin.htm
Doesn't look like I added notes about the ability to use 4.3" screens, but I think it does. Should ask you when you start...