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Think I might have found something that will work for you... the 150 ohm resistors give you about 24ma to the led's. it works from a 5v source. the 4.7 pot will allow you to adjust the speed of the blinking led's and the 555 passes about 4.5 volts to the leds
looks pretty simple. I might swing by radio shack tonight and breadboard it up. thanks!
also, nothing connects to the CV pin?
CV is pin 5 and is not used in a normal flasher circuit. I can show you how to build a simple 5v power supply also if you dont want to go the resistor route and do it right with a voltage reg.
well a normal ATX power supply also has a 5v connector, so that will work perfectly :up:
I would breadboard it but I don't have a 4.5k pot
would this 5k trimmer work in place of the 4.7k?
yea 5k is close enough
I would reccomend checking out http://www.futurlec.com/ as their prices are awesome. That one you linked to will be fairly large too btw. Think larger than a knob on an electric guitar.
ok heres what I ended up doing. I got this kit (actually 2 of them, in a care package from my buddy John over @ www.pcboard.ca).
It accepts 8-15VDC, and with the standard 39k ohm resistors it flashes like this:
here is the schematic
and parts list
in the breadboard with 39k resistors
I kept working my way down with resistor sizes, a notch or two at a time, until I ended up with 10k ohm resistors.
which ended up like this:
its exactly what I wanted. so I soldered up the kit
funny how the camera makes it seem to flash, then steady, then flash
now for the super hard part....figure out how to get the porcelain out of the metal shell of a spark plug. 2 of them actually. I may end up making a mold of a spark plug and use some casting epoxy to cast them, then finish them with the dremel. I've got a good hour into trying to chip out the porcelain with a hammer and small chisel, and its HARD
also, what is a good free program to use to design electrical circuits?
