Hi. I would like to do something with 2 LCD. I have an arduino in a box, with a sparkfun 2*16 Serial Enabled LCD. (3 cables = Vcc, Grnd and Rx) This box will be used with another one, and the 2 will be connected with a subd-25 cable. (for different things) I would like to have an other LCD on the Second box that will display the same thing that the first LCD is showing. It's not usefull that the 2 works in the same time. And maybe 1 switch on the box 2 would be good to switch on its LCD and switch off the one on the box 1. I tought to do something like that, do you think it will work ? = Is a resistor will be enought to route Vcc on the LCD N°2, and what value should i choose ? 1K ? 10K ? the switch must be on the Vcc or on the Rx signal ? Both ? Maybe you have a better way to do this ... ? ::)
thk U !!