I’m new to the forum and Arduino in general but I have a bit of a niche problem. I want to mirror a 4x16 LCD display to another 4x16 LCD display over WiFi. The existing LCD controller is incapable of connecting to WiFi. I have looked on YouTube and other sources but it seems nobody has encountered this problem. (Please prove me wrong)
Would it be possible to wire something like an ESP32 in parallel with the ribbon cable leading to the LCD? The next problem would be coding the ESP32 to turn the LCD inputs into a signal that can be sent over WiFi. The problem after that is finding a system that turns that signal back into LCD lingo. Would an Arduino Uno WiFi board be better for this application?
I honestly have no idea where to start, but these humble suggestions were simply to provide something to get the gears turning. I am excited to hear back from this community.
It is rather difficult, and requires considerable technical expertise, to decode parallel bus signals (like data sent to the LCD), then transmit them for reproduction elsewhere.
If you have the code that writes to the original LCD, just figure out a way to duplicate what it does (function calls, etc.), in a way that can be sent to a second location. Or, just send the relevant data needed to reproduce the display.
We need some additional information.
Post your sketch, well formated, with well-tempered comments and in so called
code tags "< code >" and a detailed circuit diagram to see how we can help.
please post a schematic of this "4x16 LCD contoller" and real world pictures.
Do you have the source code? post it.
You don't have the source code - can you think about to replace it by something else? What does this "thing"?
As already mentioned - Just "reading" from the LCD lines and might get a PITA.