20090127

Building a dub siren pt.4



Today I recived a bunch of electronics. Now I need to find a solution for implementing an extra 555chip that I want to use to modulate the signal from the schmatic from interruptor.
Everything for the Velleman siren is here but I have changed the dip switch to a rotary potentiometer with 4 positions. And the trim pot is replaced with a bigger potentiometer aswell.
Now I need to figure out what kind of card I need to solder all of the electronic on to. And how to get the potentiometers in a good place.


To be continued...

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