I’ve made a VGA driver which I want to test, but understandably I don’t want to blow up my monitor! Could anyone shed some light as to what the output voltages are on the pins (if they are assigned to 1’b1)?
so… by any means… it is best to use a voltage divider to lower the voltage from 3v3 to 0.7 or get a ready made mod VGA adapter but this is definitely less fun.
As general advice I would say that it is normally the current that will break stuff so if you want to be on the safe side (in general) it won’t hurt to put a resistor in series with your signals (that are data anyway) to prevent damage caused by current. In this case I would advice
With all that said… I would be surprised if this would break your monitor. I personally took the gamble on a few occasions as documented here: