Hello, my name's Jorge, I am an electronics engineer with 4 years of experience writing firmware for embedded devices.
I have read the details of your project, for me it is not completely clear what has to be done, I think there is a problem with the english grammar and the ideas are somewhat separated, do you have a complete technical specification document maybe with all the requirements listed and explained?
At the moment I understand that you have an existing digital signage working, I'd like to have a better conversation with you about the current implementation so I can understand what has to be done. I can start working on your project asap, but I'd like to have a better idea of your requirements to figure out if I can help you.
Thanks in advance for your time.