I created an application using Arduino but I couldn't get the required performance needed. And in addition, I need to add a touch screen to control the machine which is impossible with Arduino. So I'm thinking about using Raspberry Pi A+.
The goal of the application is to control some pumps according to a certain logic and the touch screen is aimed to turn on/off each pump (very basic application...)
The problem is that is Raspberry Pi is a full computer wich exceeds my need. Means that when I launch it, it has a full OS to boot and displays the desktop and so on...
Is there any way to use the Raspberry Pi for only my custom application ? like when you start the machine, the application appears immediatly ? No start-up, nothing else ? Just the screen that shows up and the application starts.
Do I need to develop my own OS or use an existing OS and adapt it ?