Another one for the electronics wizards on the list. I have a flatbed truck with clearance lights on the bed corners. I'd like to make them blink with the turn signals, but be on when the running lights are on.
The brake and turn signal lights on the truck use the same filament in dual filament bulbs, so when the brakes are on the clearance lights on the bed must stay on, unless one turn signal is on. Thus the circuit needs to isolate left from right and isolate the blinking from the tail lights. The clearance lights just have one wire for positive and ground to the bed frame. I'm thinking logic gates but with all the different conditions I'm lost... With running lights on, clearance lights are also on, and blink with left or right turn signals. With running lights off, clearance lights are off but blink with left or right turn signals. With running lights off, clearance lights do not come on with brake lights. With two separate circuits, each with an input from the running light/tail light supply and an input from each side of the brake/turn signal circuit and an output to each side for the clearance/turn signals, the hazard blink on both sides should take care of itself. If the main tail lights had completely separate turn signals this would be much easier. Why do this with the lights? Well, the way some people drive when next to trucks and the truck needs to change lanes... more blinky lights in their line of vision can't hurt. There are adapters to connect a trailer or towed vehicle with separate turn signals to a tow vehicle with combined brake/turn signals, but those don't have the towed vehicle turn signals constantly lit unless turn signals are on. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
