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    help with a school project

    what i am trying to do is take a steady 12 volt supply and make seven LEDs turn on one at a time and then go out one at a time at 1/2 hz cycle. attached is the schematic that i made. I was unable to find a lm3915 chip to simulate on multisim but i built one for the drawing. Any ideas on how to...
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    NEED HELP IN A BAD WAY.... LED PROJECT

    is there a chip out there to drive 7 -10 leds that will count pulses from a 555 and hold the lights on until the last pulse and restart? working on a project for school and having trouble finding the right chip to make the project do what my instructor is asking for. tried a 3915 with a...
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    led sequencing project... HELP !!!

    Hey everyone... very new to the electronics field. Taking a class in it an need a little help with a project. Trying to sequence two set of five leds. five in one direction(on on switch) five in the other direction(other switch). would like to have led 1 light and stay lit then 2 to light and...
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