AMT Romulan BOP

[erospawn]

(01-20-2010, 10:20 AM)DarthDuck Wrote: Jase,
I recall you saying how you're now entering the wonderful world of stuffing electronics into plastic/resin- so, I wanted to share some of the less than glamorous moments as well to assure you that it isn't always all pretty and wrapped up with a bow. Of course the more stuff you stuff into any package then makes it that much more of a jumble.


EroSpawn,
Something that's sometimes hard to recognize because you don't always expect a single "dual" timer. Yup, a 556 instead of two 555s which are/is the clock/s to the opamp. Function being that the clocks control the opamp for two runs- one central bright LED for the photon flash with two flanking red LEDs that build in glow till the middle white one sets off as the flanking reds fade. Hence the caps being used. I respect your ability to perceive the components on sight. (Well, besides just reading the numbers!)

Gotcha, the other way around.. I thought you might be using the opamp as a flip-flop clocking circuit.. but instead you are using it as a comparator -- hence the cap/resistor combo on the input (I think)