Yes, the circuit you posted will work, but my point that I posted about hystersis is still valid - the LEDs will be dark when the voltage on the + and - inputs is equal.

You did not show bypass capacitors across the supply pins. I normally use a 100 nF from the + supply to gnd and another from the - supply to gnd.

Breadboarding Op Amp circuits is usually not difficult.

But without seeing what you have done, we can only guess and mention generalities.

Does the Op Amp have internal compensation?

Is the Op Amp a FET input one? If so you have to be careful about electrostatic damage. Have you tried another IC?

Have you measured the voltages at each pin of the IC? This usually shows what the problem is assuming the IC is healthy.

Len

 

hey thank everyone for their help with my project and all the links and advice. after must stress, i was able to get my circuit working and actually managed to get 12/10 pts for my report and presentation
once again thanks to everyone for their help, i really appreciate it