I've connected one LCD display and was able to make it work perfectly. However I think I missing something.

I'm using a UNO board connected to the main Mega board. It’s connected as describe on this page : http://simvim.com/svc_lcd.html

Whatever pin I use on the UNO board will disable the pin on my Mega board.

For example, On my main board (Mega) I have an Input Multiplexer connected to pin 2. Using Pin 2 on the Uno board for the LCD display will disabled my pin 2 on the main board. Therefore, none of the switches connected that multiplexer works. The only way I was able to make everything work all together was to use a pin on the Uno (slave) board that matches a free pin on the main board. In my case I am using pin 4.

Any clue what I am doing wrong? In the configurator do I have to specify what is connected to pin 14 &15 (RX3 & TX3) or I just leave if blank?

Thank you for your help.

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1 Answer

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This was corrected  in v 9.48.
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