Hello AAC,
So last night i was floating around youtube and seen this http://www.youtube.com/watch?v=1YivbcG_KOI
It reminded me of the ghetto blasters from the late 80's early 90's they where covered in leds w/ many modes for the lights.
You could switch from a VU meter function to a chaser etc,lights all over the place, around the speakers and such.
While the chaser in the vid don't function "smoothly", i think it is because it is a one 4017 "knightrider" circuit or perhaps something to do w/ the way the audio input is done..im not sure.
So i set about trying to figure out how it was done,and from what i could find its a 555 VCO,oddly one 555 project i hadn't done.
So i set about bread boarding a standard 4017 chaser w/ the 5 pin of the 555 connected to + of a mono jack .
Nadda, has no effect on the clock speed or at least doesn't appear to, i assumed it's because the radio doesn't output enough voltage to effect the CTRL pin, but again im guessing.
Am i going about this the wrong way?
IC's:NE555P/CD4017BE
Audio signal comeing from a 1$ AM/FM radio running on 2xAAA batteries.
Power is from my adjustable benchtop @ 3.5v-5v
I've seen the other threads around AAC mentioning something about Vin vs. Ctrl voltage vs.frequency but was kinda Greek to me.
After i get this worked out i would like to make this a "knightrider" w/ two 4017's if that changes anything.
Any ideas to make it work?
Thanks,
-luvv-
So last night i was floating around youtube and seen this http://www.youtube.com/watch?v=1YivbcG_KOI
It reminded me of the ghetto blasters from the late 80's early 90's they where covered in leds w/ many modes for the lights.
You could switch from a VU meter function to a chaser etc,lights all over the place, around the speakers and such.
While the chaser in the vid don't function "smoothly", i think it is because it is a one 4017 "knightrider" circuit or perhaps something to do w/ the way the audio input is done..im not sure.
So i set about trying to figure out how it was done,and from what i could find its a 555 VCO,oddly one 555 project i hadn't done.
So i set about bread boarding a standard 4017 chaser w/ the 5 pin of the 555 connected to + of a mono jack .
Nadda, has no effect on the clock speed or at least doesn't appear to, i assumed it's because the radio doesn't output enough voltage to effect the CTRL pin, but again im guessing.
Am i going about this the wrong way?
IC's:NE555P/CD4017BE
Audio signal comeing from a 1$ AM/FM radio running on 2xAAA batteries.
Power is from my adjustable benchtop @ 3.5v-5v
I've seen the other threads around AAC mentioning something about Vin vs. Ctrl voltage vs.frequency but was kinda Greek to me.
After i get this worked out i would like to make this a "knightrider" w/ two 4017's if that changes anything.
Any ideas to make it work?
Thanks,
-luvv-