Easy Vibe

[Hal]

John Hollis's web site has some good info.  He has the original schematic, which uses the quad op-amps.  The only other schematic I've come upon is hte one I posted in the first message, the one at GEO.

[george]

My EZ vibe needs attention, but as it is on perf, I need [can't find the original sheet I had] the schematic drawing of the ckt.
 Anyone know where I can find just the schematic drawing?

Here:
http://www.hollis.co.uk/john/easyvibe.jpg

[george]

If they're in synchrony, then why not just have one LED?

theoretically yes, but the practical problem is how do you build a 4 LDR/one LED construction without going completely nuts? And without the possibility of one of the leads shorting out?

Anyway LEDs are so cheap and draw so little current there's no real incentive to minimise their part count.

Glad you enjoy how it sounds - I like mine.  One thing I did was to increase the 1nF input cap to 0.1uf because it sounded a bit thin.  

I built mine on stripboard because I don't really want to tool up to do PCBs - I call it "Building an Easyvibe the Hard Way".

I also tried the feedback mod suggested on John Hollis' website but I like it better without feedback.

[petemoore]

Maybe the LED's being right next to and facing each LDR's sheds a less diffused light on LDR cell...
 I recently ordered some C10P14 LDR cells, [and an NSL32 for a Tremulous Lune], and I'm planning wiring up a new EZ Vibe, hoping for fewer problematical adventures this time ...lol...wondering if there's a board I can purchase for this build.
 Also [still being in the beginning planning/post ordering of the nice Cells period here]...wondering about LFO treatments, possibly a second LFO for more 'random' sweeping, more specifically for 'starter for beginner' [schematic links? Suggested reads/places to look?] as such for fancy LFO Treatmennts...
 GEO's LFO's looked good but the pictures seem to be occluding much of the texts [not that I could comprehend 'right now' anyway and turn the equations into part values...].