Help With Astable Multivibrator

[_d3si]

In my assignment, I have to implement an astable multivibrator (image1).

I am a total beginner and so I did the schematic first, because I thought it would be easier that way, before trying to do the breadboard view.

In the schematic, I see that something is wrong because of the red wire between J1-1 and J1-2 and I don’t get what the problem is. I have spent hours trying to fix it but haven’t been successful so far.

And lastly, we also have to create a Printed Circuit Board, which confuses me the most. We are instructed to:

• Place the components considering their intended usage and physical dimensions.
• Route the traces manually and use vias only if necessary.
• Draw the PCB’s outline.
• Miniaturize the PCB (e.g., optimized trace routing, compact placement, double-sided design, SMT instead of THT, …)

Could someone explain to me what all that means?

I would really, really, really appreciate it, if someone could give me some input on how to correct/implement all this because I desperately need the points for this assignment and I am really struggling lol.

[_d3si]

this is my schemtatic

[_d3si]

this is the breadboard

[vanepp]

Your problem is likely that you have the connections in breadboard reversed from those in schematic. To fix that either swap the two wires in breadboard or schematic and the extra rats nest line should go away. Connections in any one view will reflect in to the other two views. You are correct to wire the schematic completely first, but should then click on the rats nest line in breadboard and pcb to make the associated connection in that view (which will match schematic) You can then drag the wires to route them neatly. When asking for help it is best to upload the sketch that you are working on (the sketch is the .fzz file, upload is 7th icon from the left in the reply menu and accepts .fzz files among others.) As to the pcb questions you need to research the ways to do that for yourself so you learn how.

Peter