I'm new to this, hoping to find the answer to my little problem I'm having.
I'm in the middle of a project, there have been a few people to do this project but I'm looking to do some thing a little different to mine. I'm using the mega 2560 board and mega shield v1.1 and they are connected to this screen ITDB02-3.2S. the people who have done this project have only had the screen at a maximum length of 12 inches. but I'm looking to have my screen 5 ft away. does anyone know if this is possible and can it be done. tried to Google but no luck.
UnoDueTre:
Why does the Arduino have to be 5' away from the screen?
Can't you move the Arduino to be next to the screen?
it just the way I'm looking into doing at the mo. it also comes down to spare and storage at the mo.
If I come to a dead end then will no choice but to have it connected to arduino.
I couldn't find a spec for the data rate, but that aside, just trying to run all those conductors required to interface to that display would be enough to motivate me to find an alternative (closer) location for the Arduino relative to the display.
At this point the question is not whether there is a solution, but rather how important is it to you
(ie: how much trouble are you willing to go to ?) to get it to work. If you are a "tinkerer" then there
is one possible solution that you could test . If you are not inclined to "experiment" and just want a
plug & play solution, I don't have any suggestions. The "experiment" as it were would be to determine
if there a family of CMOS ic's fast enough to handle the display logic.
If there is, then the distance is not a problem because 12V CMOS can work many feet. I have personally used it at about 100 feet.
One issue is that your TFT runs on 3.3V so anything I would suggest would first require a logic level
conversion from 3.3V logic to 5V TTL logic. From this point to the destination (5 feet away) would be
CMOS and then at the destination, you would need to convert from 5V logic back down to 3.3V logic.
From the starting point 5V logic to the destination 5V logic would be 12V CMOS.
All the logic levels would be the same at both ends of the transmission distance (in this case 5 feet)
but in between they would be 12V High Speed CMOS, with 4050 logic level converter ics at both ends
to upconvert from TTL -to- 12V CMOS and then downconvert from 12V CMOS-to-TTL. If the display
The unknown is the signal transit time propagation delay in ns/foot. If ALL the signals are delayed by
the same amount (including the clock), will there be any notable difference in the display ? Finding
this out is the part that requires some experimentation. If you have some other solution. Great.
Hope that works out for you. If that's more trouble than it's worth then maybe you can find some
product online that is a plug & play solution.