485, lcd and control

Hello all,

I have minimal amount of experience with arduino but I did make a firework launcher from scratch, although it was frustrating. For my new project I would like to do the following;

Communicate over 485.
Have a pot to create a setting on the remote device.
Have an LCD to give the setpoint of the pot value, status and other information about the device.
Use a four buttons to adjust numerical values of the setpoint and send the data to the device.

I am not looking for someone to create the code for me but rather give me direction on what to research in order to achieve the goal.

Which Arduino(s)?
Why 485?
For 2 devices, why not the simpler RS-232?
Which software protocol? Standard serial? If so then find and read through Robin2 serial basics thread.

Arduino nano
The unit communicates in 485, is 232 the same?
I will read robin2 thread.

Can you provide a link to the thread, I am unable to find it.

What unit communicates in RS485?

No RS-232 and RS-485 are not the same. RS-232 and RS-485 only define the hardware layer. Somewhere along he way you need to find out the software definition (protocol, data format, or what ever you prefer to call it).

Robin2 Serial Input Basics

Thank you for your time adwsystems. All I can see is 485 serial. Here is the link to the unit that I am trying to communicate to.

https://www.alicat.com/documents/specifications/Alicat_MCQ_Controller_Specs.pdf

That is the technical datasheet. Have you been able to locate the instruction or user's manual?

You will also need to obtain a TTL to RS485 converter.

The technical data tells you which language, the manual will tell you which words to speak.

Only the two devices, nano directly to MFC?