r/breadboard

So i settled everything up, but the led wont turn on, any suggestions?

I cant figure out what's going wrong I'm staring to wonder if my button just isnt working resister is 220ohms and battery is 3.7v

I want to learn electronics n stuff so is this breadboard set good enough to learn on?

Started off with just wiring up the 7 segment digit display to learn the layout of the pins turned into a sound activated 10 second count down then added an indicator LED then said screw it and added a passive buzzer and programmed a little melody to it now it counts down the notes instead of by seconds just need to adjust the sensitivity a little it's a bit to sensitive but whatever it was still a fun project and I learned a lot lol

I'm having trouble with VR2 when I supply it with 5V DC power; turning the VR2 knob doesn't change the Uce value at all.I want Uce to change its value when VR2 changes, thereby supporting a cascaded RC amplifier circuit using BJTs. My English is poor, so please bear with me. I hope everyone can teach me.