Stop using the LCD and reassign pins mid-program

Using Arduino Displays
1

I currently have a LCD set up with my Arduino using the LiquidCrystal library.

My project is meant to be very configurable, and one such configuration is whether to have the Arduino control 3 devices, or 2 devices + an LCD. If the user decides to switch from 2 devices + an LCD to 3 devices, how can I best disable the LCD and reassign its pins? Obviously, a hardware change would occur at the same time, likely through the use of a multi-pole switch.

If there is no good way to do this, then would resetting the Arduino using watchdog be best (the option will have been stored in the EEPROM)?

Thanks

2

I'd use an I2C LCD and not worry about it.

3

Cam_2002:
If the user decides to switch from 2 devices + an LCD to 3 devices, how can I best disable the LCD and reassign its pins?

Why might that even be necessary? :roll_eyes:

In any case, hot-swapping" requires very careful design. :astonished: