led sequencing project... HELP !!!

[telephoneman]

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 stay lit and so on until #5 lights and then resets the sequence. what do in need for parts? Can this be done with a 555 and a 4017 cmos chip or do i need to look elsewhere? Any helpful advice would be greatly appreciated.  Mark

 

[audioguru2]

Hi Mark,
Welcome to our forum. ;D
A 4017 would light one LED at a time.
An LM3915 logarithmic voltmeter world be able to do what you want if it is set for the bar mode as it indicates the exponential rising voltage of a capacitor charged by a resistor. It has outputs for up to 10 LEDs. 

 

[telephoneman]

i appreciate the info.. if you don't mind me asking... these are for like a blinker set up on a motorcycle, what would i look for in the specs of the leds? do you know?

 

[audioguru2]

A turn signal for a motorcycle needs very high power and wide angle LEDs and a high power circuit to drive them. An LM3915 drives ordinary LEDs with fairly low power. Each of its outputs would need a power transistor added to drive a high power LED.