Raspberry Pi Wireless Display Control

Job ID: 38210140

Budget: $250 – $750 USD

I'm seeking an experienced Raspberry Pi developer to create a bespoke circuit that allows for remote control
I need help putting a simple circuit together. Using a Raspberry Pi, because of its HDMI output (unless you have a better suggestion) I would like to have 1 TV in a grocery store which has 6 registers. Each register will have a wireless button. When pressed, the register number will appear on the TV and hold for about 8 seconds or until any other of the 5 buttons button is pressed to let customers waiting in line know which register to go to next. I would also like a chime sound to play when any of the buttons is pressed. Please see attached image for a better visual. Once finalized, I will need the code, a wiring diagram and parts list to make this work. Thank you very much for your help