NEED HELP IN DESIGNING AN RO CONROLLER

I am trying to make an arduino based Brackish RO controller and i would require a lot of help from technical people in doing so. Please let me know how and where to start.

I need to make it with an HMI so that i can read and monitor Pressure, TDS and Running hours of the unit.

So where shall i start. what would i need and how to do the step programming.?

Please let me know how and where to start.

Stop screaming. Fix your god-awful spelling.

Might be an idea to assume that the forum does not understand what you mean by RO, TDS and HMI.

RO-Reverse Osmosis
HMI-Human Machine Interface
TDS-Total Dissolve Solids

He is perhaps trying to make a controller from which he can monitor and control various factors of water.

what would i need and how to do the step programming.?

Get an Arduino and learn how to read a pushbutton, blink an LED, read a voltage, etc.

Plenty of tutorials with the free Arduino software, and on line.

This may help for TDS.

https://forum.arduino.cc/index.php?topic=405906.0