What did I do wrong in copying a circuit from a part?

[Wes76]

I have a signaling device I 'm trying to copy (private use only) I have listed all the components here.

 

[Wes76]

I can provide a detail of all connections I made.

 

[rjenkinsgb]

I don't have openoffice - can you use a common format like pdf or jpg?

 

[Wes76]

PDF correct now

 

[rjenkinsgb]

PDF

I think that's the wrong PDF! (Some kind of immigration paperwork??)

 

[Wes76]

PDF

 

[Diver300]

Your PDF is just text, which could be posted directly.

Please share a circuit diagram. Without that anybody trying to help would be guessing too much.

 

[Wes76]

If I had a diagram, I'd be following that. I can send a photo of my breadboard copy. I can also detail each connection I made on the breadboard.

 

[rjenkinsgb]

It's an very simple concept; likely easier to create from scratch rather than trying to replicate someone else's unknown design.

 

[danadak]

Hand draw a diagram, that cant be too difficult given the low # components.

 

[AnalogKid]

I've re-read this thread, and nowhere in there is an actual question. Then I found it in an attachment. For future reference, please put this type of information in the first post as plain text.

We still do not know how the original circuit functions.

Does it both beep and flash on contact?

If yes, does it both beep/light continuously as long as the tip is depressed?

If yes, does it both beep/light for a fixed minimum time if the tip is depressed very briefly?

If yes, this indicates that the circuit is a retriggerable monostable, which is a pseudo-clue.

In what way is your re-creation not working?

ak

 

[Jverive]

If I had a diagram, I'd be following that. I can send a photo of my breadboard copy. I can also detail each connection I made on the breadboard.

Your breadboard photo is very difficult to interpret, mostly because we can't see where each intended connection exists. Can you label each component and tell us what each of its leads is connected to? (Since the circuit is built around the IC, you could just assign an identifier to each of the other parts and tell us how these parts are connected to the IC. The transistor probably just interfaces the buzzer to the IC, so also tell how the transistor and buzzer are connected).

But first double-check the component leads and make sure there are no short-circuits. Always arrange components so that each connection is easy to identify and that no bare wires or component leads cross each other. Finally, don't put more than one wire or component lead into a breadboard hole. Your circuit might actually be correct but there's an inadvertent open-circuut or short-circuit somewhere.

 

[atferrari]

Post a schematic.