Soldering electronics is a delicate art. If you're just getting started learning how to solder, this handy reference chart can help you spot some common mistakes and make sure your work comes out right.

We all tend to slouch in our chairs now and again, and for some people, that means back problems. If you're sick of slouching all the time, Adafruit has put together a slouch detector that sets off an alarm when your posture is failing.

Video: For most of us, soldering electronics means soldering on "through hole components" that are large and easy to handle. However, when machines build components, they use "surface mount components", which are much smaller. Over on YouTube, Adafruit shows off how to deal with these tougher surface mount components.

If you're working on a project that calls for a little soldering, but you don't have a soldering iron, this clever build will work in a pinch.

The solder fume extractor is a bit of a DIY classic, so it's no surprise that Adafruit's put together an updated guide that uses some modern components alongside a cleverly designed 3D printed case.

Video: We've covered all kinds of different ways to learn how to solder, but desoldering is a totally different beast. Adafruit explains how to do it.

A cordless soldering is already a pretty nifty device, but lugging around AA batteries is no fun. Adafruit shows you how to hack USB charging into the Hakko cordless soldering iron.

Video: When you need a quick charge of your phone or other device, it's easy to just connect it into any old untrusted computer or public charging station. The chance of malicious data getting through to your phone is pretty slim, but it still exists. Over on Node, they show off a way to make sure only power can get through the USB port.

If you need to make some simple electronics repairs, but don't have a soldering iron, you aren't completely doomed. You can use plenty of other tools, along with almost any heat source, to solder whatever needs soldering.