??? 07/26/04 21:00 Read: times |
#74920 - RE: Interface works Now Responding to: ???'s previous message |
Steve M. Taylor wrote:
------------------------------- Ground is ground is ground is zero volts. Who cares. I personally wouldn't connect the ground from 230V AC and from digital +3.3V microcontroller :) Zero volts true, but somebody plugs something heavier in nearby and suddenly your ground is +30V for a moment. |