Circuit wont simulate


Technical Support
Staff member
Do you really mean that it will not simulate or just that it does not do what you were expecting ?

It simulated for me, but it is not using the C.6 or C.7 signals which control RS and E of the LCD module.

Your code expects the LCD to be connected on port B pins so that's not surprising. Either your code does not match your circuit or vice versa.

With the LCD wired as per the code it does work, see below.

I am not sure how your wiring around RV and the LCD VEE will affect things. That has the potential to short V+ to 0V but has not affected my software simulation.


Last edited:


Senior Member
Thanks Hippy
Realised what I did wrong the layout of the 18m2 in the schematic was different to the layout of the 18m2 in VSM
kind regards novolts