A Cold Solder

Problems:

I encountered four problems, one was that when putting my items in my bag after checking I had them all, I accidentally slingshotted a screw across the room but luckily I found it quickly.
The other three problems are both related to my LEDs, as I soldered one in the wrong way, and the other one had too much solder and it was hitting a trace and messing up the circuit. I fixed both quickly by unsoldering, and re doing the soldering with less solder and in the right direction. the last one was just luck because I had a row of 5 LEDs that weren't working then when I came back to class the day after it just worked.

video with the glasses working at the end of the project

the first thing we did was practice soldering 4 things onto a tutorial pcb. the things I soldered are circled in black in both pictures, and some were really good while some were not the best.

the next thing I did was check through my parts bag for all the parts to make sure i had them

The next thing i did after that was get started by soldering the 5 resistors

I then soldered on the two resistors below the 5 and one on the left

Then i finished it off by soldering the one leftmost resistor

I then soldered on the microphone, which is the first component with polarity, so i had to make sure I put it in the right side

I then did the longest task in the project, which was soldering the 50 led. of the led that i soldered i encountered 2 different problems. the first was that I soldered one of them in the wrong way, so it made  its entire 5 long row not work. the other problem was an led didn't work and I had no clue why, but after unsoldering it and resoldering with less solder it just worked, so i don't know what the problem with it was

I then soldered the ceramic capacitor on, and it had a really weird shape to solder as the pins were a bit too close

I then went and soldered the led driver, it had something like 8 pins so I had to be careful no bridges formed.

I then soldered the transistor on, and like the capacitor it didn't fit into holes for its pins and therefore is slightly rotated

I then soldered capacitors, which were really simple to solder

Then i got the potentiometer on, and its annoying because it stands higher up then other components.

I then got the switch on, it was prett easy to do but there was a big risk of getting a solder bridge due to how close the pins were

I then soldered on the positive battery terminals, which were really easy to solder as even if they form a bridge it doesn't matter

I did the same as above for the negative terminals

I then put the glasses into into the case, and screwed them in

hers an image from my first test, i found it was a bit oversensitive so i turned it down  and then it worked perfectly

here's an image of the underside from outside the glasses, I took the image after getting the 50 leds on so it doesn't have everything.

the final product, with working leds