For a personal project I was designing a basic audio equalizer circuit using this online simulation tool called TinkerCad.
I managed to build the circuit but for some reason I really can't get it to work.
I think it has to do with the fact I connected multiple breadboards and I may not have connected them properly (I had to do this because you cannot shorten the lengths of resistors on TinkerCad.)
Attached below are the screenshots of the circuit diagram, and a snapshot of the breadboard.
The simulation does not work because the op-amp power supply pins are not connected to a power supply.
using Tinkercad has no relevance really to how you build your prototype. Figure out how to build your prototype on breadboard or stripboard with the components reasonably close together. Read up on power supply wiring and decoupling, you will need this to get things working properly. You also need a good solid ground to all parts of your circuit.
What you are doing is actually both commendable and very educational, many people never go beyond simulation to actually trying to build a real circuit. When you do make a real physical circuit, all kinds of things start to become important which are not really a big deal in the "ideal conditions" of simulation. This starts with grounding and power supplies. You might encounter some frustration but you will learn if you persist. Also you will likely find it helpful to have coupling caps of 10uF or so at input and output of your circuit (to remove DC).
Change all the DC grounds on Op Amps and resistors to Vcc/2 with 2 R’s with unity gain buffer for a single supply. Add cap.
