Hi guys,

Thank you for the constructive input to my question. Unfortunately I am not 'electronics' orientated and for that exact reason I have to read my manuals. The 18MZ is not very clear on having the kind of sequencer as described by most of you using other radio's. So I guess I'm left with the 555 timer (after doing a Google search as so eloquently suggested) and being educated into it's mystical powers.

Please bear with me a little longer: the 555 timer has 8 pins. If I read the 'astable' instruction, which produces a square wave at regular intervals - my (basic) logic is that if I connect the negative (common) lead from the smoke pump battery to pin #1 continuing on to the smoke pump. Then connect the positive lead (with 7.4volt in my case) to pin #8 and then from pin #3 continue the positive lead to the smoke pump - that I should get a high/low power flowing, which will alternate as long as the smoke system is switched on, hopefully producing the smoke pulsing sequence. So do I still need to build the circuit as displayed in the video provided earlier in this thread?

Cheers,

Jan