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Reply to "Updated: Build Files For 2-3 Aspect Signal Actuator; Common Anode LEDs; Video Added"

Rod Stewart posted:

Well the beat goes on, but no resolution. I swapped in a new 556 but it behaves about the same way. And it is not consistent. Mostly it works as it should. But on occasion when the BOD is jumpered the green led stays on, it does not go to red. Then perhaps after 15 or 20 seconds, with nothing else going on, it will switch to red, and then after the BOD is opened it will time out normally.

Today I am going to build up a new board and see what it does. I must have a flakey component or connection on this board, and it's just faster to build a new one. If the new one works properly, guess where this one is going to wind up? Haha. I am also communicating with Rob Paisley and I plan to ask him what the negative recovery diode D2 actually does.  I have not seen anything like that on any other 555 or 556 schematic, or in any datasheets. In response to my first email to Rob 2 days ago his first question was; is D2 installed, and is its polarity correct.

Rod

Maybe you could post a hi res picture of the built up board and other eyes could check it out for accuracy. Might help.

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