Interfacing and fixing touch problem in Arduino TFT 2.4" LCD shield [Re-upload]

Hello and welcome to this tutorial where I try to fix the touch function issue that I encountered while trying my LCD TFT shield, first the touch didn't seems to work at all, then we got some inverted axis direction problem and last some callibration issues but we got over them, Hope you like it.
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Wiring and codes:
surtrtech.com/2018/11/14/inte...
TFT LCD 2.4" Touch screen shield tutorial for beginners:
• TFT LCD 2.4" Touch scr...
Bitmaps pictures from SD card on TFT LCD Shield:
• Bitmaps pictures from ...
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[@christianmarotta8891]

Dude you saved my life,good job man

[@TellyS100]

Very helpful! Thank you very much for taking the time to explain this. I was about to throw out all 4 displays I bought.

[@fuxi1444]

Thank you very much, it worked for me.

[@ask-wj2pf]

Thank you very very much it works for me too.

[@thomasfolke7929]

Thank you from Germany you saved my day😉

[@Svetoch-77]

Ты лучший! Спасибо за Труд.

[@Raphitech]

thanks man you ar a lifesaver so you get a like and a subscribtion

[@mohamedmistri8228]

thank you very much

[@mauricioalcantara720]

Hello my friend, I got a big question, I know this TFT LCD was made specially for arduino, but, it would be posible to use it with a microchip PIC ??

[@SurtrTech]

Yes, I saw some project with PIC18F4550... But I don't know much about it

[@ask-wj2pf]

👍🏼👍🏻

[@shafiatasnim3116]

Can you please tell which editor you used?

[@SurtrTech]

Dev C++

[@stefanofontebasso4437]

Hi, i have a problem, you touch is inverted by 180°, my touch is inverted by 90°, what can i do? i tested this tft paint and this is my problem

[@SurtrTech]

Hello you don't have the same problem as mine, my problem was that the same variable is inverted but yours you have the "X" axis input is considered as "Y" axis input and the same way around.
You can try this solution without modifying the library first:
In the paint code you'll find some lines with
#define YP A3
#define XM A2
You can try to switch A3 and A2, and test if it works.

[@Jedrexxx]

Hello, I have this same issue with this screen, i repaired an issue with X and Y axis but I can't solve the problem with an innacurate touch. I tried to change the values like on your video but it didn't help for me, stylus is still away from coloured line. Can you help me?

[@SurtrTech]

Hello, if you solved the inverting issue, start modifiying the values, and try to add or substract bigger values until you get it right, then run the calibrating code it will give you the MIN and MAX values to be more precise.

[@russelibrahim4045]

xpos = map(tp.y , TS_BOT,TS_TOP, 0, tft.width());
ypos = map(tp.x, TS_RT,TS_LEFT, 0, tft.height());

[@EspantoniusCZ]

@@russelibrahim4045 Where should i put this in code?

[@russelibrahim4045]

@@EspantoniusCZ look for the part of the code that it is currently been used and change it to this

[@stefanofontebasso4437]

My touch is inverted, if i move from x0 to x1 in reality the direction is y0 to y1

[@error-ts3xt]

same issue....did u find the solution?

[@tudorversoiu8138]

@@error-ts3xt At the line which returns the point, swap the x and y

[@error-ts3xt]

@@tudorversoiu8138 yea i did that already thanks❤

[@russelibrahim4045]

I fixed this with some reverse engineering.

[@russelibrahim4045]

xpos = map(tp.y , TS_BOT,TS_TOP, 0, tft.width());
ypos = map(tp.x, TS_RT,TS_LEFT, 0, tft.height());

[@SurtrTech]

Cool ! Thanks for sharing

[@maximilian5635]

@@russelibrahim4045 and where in the code ?

[@russelibrahim4045]

@@maximilian5635 xpos = map(tp.y , TS_BOT,TS_TOP, 0, tft.width());
ypos = map(tp.x, TS_RT,TS_LEFT, 0, tft.height());

[@maximilian5635]

@@russelibrahim4045 So I have the problem that the program is mirror-inverted on the display Is the code of you for the solution at all?

[@GabyZeballos]

no tienes ganas de hablar?