Hi everyone, A client has asked about firing pyrotechnics via a computer system. Has anyone had any experience with this ? I don't see any great problems doing the software & serial hardware but I'm not sure of the best (safe) way to fire the igniters. I thought of sending the data out to the remote points via RS-485 and having a PIC in each firing module that decodes the commands & activates the individual outputs. Each module would service a group of up to 25 charges I guess. That way, only a comms line + say a 24Vdc power cable is required. I imagine the user wiring ALL of the igniters to the remote modules FIRST and THEN hooking up power & comms back at the controller. Does this sound like the way to go ? Please reply either on/off list. Regards, Dave Duffy.