A customer is asking for a product that I am having trouble finding. I also might rather build it if I knew what was needed. Best way to explain is this: We've all been at a service desk where we've had to "take a number" to mark our place in line. Then they may also have a good sized digital display for the public to see which number is being served so you know your position "in queue".
Well a customer (business) would like something like this where the employee can increase or decrease the displayed value (max of two digits) with the push of an up or down button . A clear or reset button would also be helpful.
Another feature desired would be to "light up" another indicator, maybe the decimal point, on the display to indicate another condition that may become involved. Also it would be desirable to have a smaller LED display at the operator's desk to see and confirm the value being sent to the larger display which may not be easily seen from their location.
I'm hoping someone here may have the knowledge to help me with a diagram and parts needed (maybe a source as well for the LED displays) With a schematic and any comments regarding the design, I think I could construct the project.
Many thanks in advance !