Hi, I am a high school student and this is my first time working with a breadboard. I want to know if I did it correctly or what do I need to change to make it correct. For parts that I got incorrect, please explain what I did wrong so that I reduce those mistakes in the future.

 

Hi, I am a high school student and this is my first time working with a breadboard. I want to know if I did it correctly or what do I need to change to make it correct. For parts that I got incorrect, please explain what I did wrong so that I reduce those mistakes in the future.

It's pretty hard to make out some of the resistor color bands -- though how much of that is just my aging eyes, I can't say.

It would be helpful if you identified some of the points on your breadboard. One way to do that is just annotate the pictures that you took using a basic image editor, such as Paint.

Another very useful way is to make little flags that you can stick right into the breadboard. A simple way of doing this is to take cut off component leads or lengths of 24 AWG wire and write small labels on paper strips and then tape them onto the leads like little flags. Then stick those into the breadboard and bend them so that the labels can be read. Extremely useful as your breadboarded circuits get more complicated.

As for verifying that your breadboard matches the schematic, that is definitely a skill that you need to develop. There are a number of techniques that make this easy (well, easier) when you are getting started, and as you get better you can start dispensing with them as your skills build.

One way is to name and/or color code your schematic nodes.



Now markup the picture of your breadboard and see if they match.



This is the best match up I could do, and as you can see there are unmarked nodes. It appears that, at the very least, your green node (Vout+) is fragmented.

One obvious issue -- the resistor at the bottom right has one end that is unconnected. Do you see ANY resistors in your schematic that have one side unconnected?

Also, to the best that my eyes can make out the colors, I'm seeing the following values:

R1: 15 Ω
R2: 47 Ω (or possibly 470 Ω)
R3: 100 Ω
R4: 12 Ω (or possibly 120 Ω)
R5: 47 Ω
R6: 150 Ω

When you wire up a breadboard (or a PCB), it will pay nice rewards if you make the effort to orient components in a uniform way as much as possible. For resistors like this, orient them so that the color bands read from left to right or from top to bottom.

 

R3 junction R5 is incorrect, move R3 (junct. R5) to R2,R4,R6 junction in the blue circle. Then move R6 bottom right to R5 where R3 was moved from - hope that makes sense.