Random flasher?

[Helen Rogers]

Hi!

I need a device that will randomly flash a set of 7 lights (the bulbs can be
3.5 or 12 volt). I would like the on/off timing of the flashes to be random
(anywhere between up to say, 10 seconds) and for the number of lights lit
during the 'on' cycle to also be random. I really have no clue where to
start with this - would I have to build something or can I buy something
that will do the job for me?

I would be very grateful for your advice!

Thanks,

Tim

 

[neon]

YOU need a ramdom nunber generator [LOGIC] and change the lamps to LEDS easy then lamps.