Hey.
I want to ask if some of you guys know anything to control a TouchScreen without using a ADC Chip, just the PIC A/D Inputs (I'm using PIC2550)
Hope you can help me out with my 4 wire TouchScreen :)
Best Regards
Thomas Jespersen
Printable View
Hey.
I want to ask if some of you guys know anything to control a TouchScreen without using a ADC Chip, just the PIC A/D Inputs (I'm using PIC2550)
Hope you can help me out with my 4 wire TouchScreen :)
Best Regards
Thomas Jespersen
Yes........
more details=more chance to have help. resistive, capacitive, UFO driven or what? Any model/brand ?
I got some from CircuitEd.
I don't want to buy it form CircuitED as the freight cost is so expensive as i live in Europe
But if it was cheaper (the freight) then i would like to buy the RGB GLCD With TouchScreen!
But i've found this instead, and it's from a shop in Europe, so it's perfect
This is the datasheet for the TouchScreen: http://www.mikroe.com/pdf/touch_scre...cification.pdf
And if you look at nearly the bottom of this page, you see
Graphic LCD 128x64 with TouchScreen | $24.00USD
Thank You
Seems to be the same i have.. It's a Resistive one, the GLCD controller is this Grandpa KS0108.
The following could give you few hints...
http://www.hitachi-displays-eu.com/d...Technology.pdf
http://www.eetindia.co.in/ARTICLES/2...URCES=DOWNLOAD
http://www.monolitic.com/esp/Notas/t..._resistivo.pdf
http://www.sfcompiler.co.uk/wiki/pmw...er.TouchScreen
Hi, Thomas
you,ve the "official" scheme on the MkE Databook for EasyPic boards...
Alain
Yes but you really don't need all of those extra transistors, resistors, capacitors stuff...
If you carefully read and understand the documents above, you'll see how easy it is.
I think SteveB already post a code snip for that last year or so. I Haven't compared mine with his one yet.
One more
http://electronix.ru/forum/index.php...=post&id=18229
Another one? Why not
http://www.circuitcellar.com/avr2004...86abstract.pdf
Hi, Steve ...
When it works fine ... I consider the solution as GOOD !!!
No extra brain twist required ... LOL !
May be ... just have a better-than-genuine data acquisition ( just move stylus quickly, and you'll understand what I mean ... hé,hé ! )
May be ... also some better linearity enhancements ???
Alain
:D yeah but where's the fun using copy/paste ? :D
No need to re-build the world ... just enhance it gives enough work for everyone ... !!!
Alain
The last one is the only with a code snippet, but it isn't in PBP!Quote:
Originally Posted by mister_e
but i will try and read all the documents, but i am not good at ADC in PBP ;-)
What does this do, and would it be easier to use a touchscreen if i buy this:
http://www.mikroe.com/en/tools/touchcont/
It's exactly the same draver as Alain's EasyPIC 5 board.
It may help.. but i stand to tell you don't need it.
But if i don't buy that, i would need to make a circuit who are correcting the Touch Values into the 0-5V range, right?Quote:
Originally Posted by mister_e
But do you have a PBP Example, because you sounds like you know alot, as i don't!
Begin with the following...
http://www.picbasic.co.uk/forum/show...44&postcount=7
Then send your results to your PC or any LCD, then try to understand what happen.
Then what if i use that touchscreen controller, then i shouldn't High any ports, should i?Quote:
Originally Posted by mister_e
Yes, you'll still need to play with high/low, ADC conversion etc etc... hence why i told you that you don't need it.. even your new compiler haven't it built-in ;)
New Compiler?Quote:
Originally Posted by mister_e
But could you please look at this datasheet, and tell me what ports that should go to what (X+, X-, Y-, X- as there is in the PBP code, but this have some others)
http://www.mikroe.com/pdf/touchpanel...matic_v102.pdf
??????:eek:Quote:
But could you please look at this datasheet, and tell me what ports that should go to what
See your other thread of endless how-to posts...Quote:
Originally Posted by mindthomas