I see the soldering guide is getting some attention, so I thought I'd throw together some additional resources to help learn soldering as well.
I find videos to be especially helpful to be able to see the stages and transitions of the solder-
Video by SparkFun on soldering: https://youtu.be/f95i88OSWB4
Walk through by SparkFun: https://learn.sparkfun.com/tutorials/ho ... -soldering
Collins Lab video on soldering: https://youtu.be/QKbJxytERvg
Adafruit walk through on soldering (where the images in this thread came from presumably): https://learn.adafruit.com/adafruit-gui ... g?view=all
But like the guide says, you've gotta get practice. And it's best not to do it on one of your nice boards you got from the forums here.
I learned soldering from kits. There's all kinds of kits available at good prices ($1-$25) to learn these things. I'll split my recommendations between practice and functional. Functional kits do useful things to aid in your discovery of electronics engineering. If you only want to make GameBoy Zeros by assembling lists of parts, you might choose to skip these, as they perform basic useful functions for doing stuff you might not particularly need. The basic practice kits will get you are enough along with your soldering skills to eek out some GBZ's.
Once I got into electronics for the first time (only a little over a year ago now) I went nuts for these things. I'm very excited to share these with you. In fact, when researching for this post I found so many cool new kits that I want to get!!
(I found ones with free shipping to the U.S. If you search for the same thing you want you'll find a handful of variations of the same kinda thing and many different stores selling them all. They'll all be different prices, and others might have free shipping to where you're at so look around if you want to save a buck or two.)
Basic Practice ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Audio Amp Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
https://www.aliexpress.com/item/1set-TD ... 06352.html This is a simple Audio Amplifier that I've found to work very well. I soldered some nice speakers I salvaged from a rear projection TV in the alley to it. There's no humming or popping in the audio like another cheap audio amp kit I'd bought.
Best thing, it doesn't even cost $1. And no shipping.
If you get this you can solder any speakers to it and any headphone jack. Or cut up an AUX cable and use that.
This performs the same function as the Adafruit Audio Amp @wermy used in his Part 4 http://www.sudomod.com/game-boy-zero-guide-part-4/. Though, this one is rather large and not reasonable for a handheld build.
Dice Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
https://www.aliexpress.com/item/New-Ele ... 56987.html There's load of different dice kits out there, so pick whatever one you want. This one randomly lights up a number of LEDs to simulare a dice roll of 1-7. Oddly, not a full 9 but whatevs, this is China. Clock Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
https://www.aliexpress.com/item/High-Qu ... 74571.html
There's a thousand variations of clock kits too. This is a simple one to get started with. Clock kits are notoriously frustrating to figure out how to program though, given hard to understand instructions and difficult button combos and generally only 24hr time. But it's fun to solder!
SMD Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
https://www.aliexpress.com/item/DIY-Kit ... 98602.html
This is a fun example of an SMD kit. Even if you don't plan to solder SMD, it's still a great learning experience to understand how solder acts and behaves. Plus, if you can do this through hole is a breeze. Try a board like this out after you've done 2 or 3 of the through hole ones above.
Transistor Tester Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'll recommend a kit that's a little more expensive, but very useful for early electronics engineers. If you aren't going to do much with electronics besides these boards, you can maybe skip it, but otherwise I recommend it highly.
Its called a transistor tester:
https://www.aliexpress.com/item/Free-sh ... 24516.html Basically, once it's built, you can plug in resistors, capacitors, and many other things and it'll tell you what it is, and what the value of it is too. So if the colors are hard to read on a resistor, or you are sick of googling color codes every time, you cna just plug the resistor into this guy and it'll tell you the value.
This is especially useful if you get more kits and they don't label the components they give you.
Stepdown/Current tester Kit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
https://www.aliexpress.com/item/LM317-A ... 87034.html
This guy is pretty cool. You plug a positive voltage and a gnd in on the left, and you can control how many volts you got out of the right. You'll have to have a multimeter to test the output. The application is you have a random AD/DC wall plug for maybe 12v but you need 5v to your Pi or Arduino. You can use this to convert the voltage down from 12v to the appropriate 5v.
And hopefully, beings as its a $5 kit you soldered yourself, it wont fry something.
Here's a list I put together with a bunch more. It includes the next level of soldering - SMD, as well as some complex projects and ones that will surely shock you to death if you do them wrong. I do not recommend those unless you know exactly what you are doing and the risks involved.
https://my.aliexpress.com/wishlist/shar ... 3107064207
I'll return with more curated kits in this post later, but this should give you a few things to get started on.
[EDIT] They fixed the wish list! Now you can go and scroll through TONS of kits I've assembled in this list. It's a lot easier than describing and copying images and all that here.Currently, the shared Wish Lists aren't working 100%. I've put in a bug about the View More button not working.