@kowshik1729 That is also Nice idea, If you want only Up,Down, Left, Right movements then try this method suggested by @SuperGops

Hi @FlorianB, I m akhil joseph. Works as an Embedded engineer. I also do freelance, so i can do this. Please contact me.

Mob: 999 5416 483.
E-mail: akhiltj9@gmail.com

@kowshik1729
Design C is also good,

i need to run a QT application on BOOT. and i want to disable all controls like minimize application, close application.
Anyone have experience in this? please help me.
THANKS!

Hi @FlorianB, I m akhil joseph. Works as an Embedded engineer. I also do freelance, so i can do this. Please contact me.

Mob: 999 5416 483.
E-mail: akhiltj9@gmail.com

@kowshik1729 That is also Nice idea, If you want only Up,Down, Left, Right movements then try this method suggested by @SuperGops

@kowshik1729
Design C is also good,

This can be done using captive grid. You can buy a touch pad
https://www.arrow.com/en/products/dm160219/microchip-technology?gclid=Cj0KCQjwmdzzBRC7ARIsANdqRRnOu-n2vJtXa6VRqepktBLdxhyTriIVXNe2ZSHokhzs4U3je6cburkaAqk9EALw_wcB
or you can make your own PAD

please refer 13th page of this documentation.
if you like to make one MPR121 is a nice choice