This is where I try to store all the information that I frequently forget or need a refresher on.
crimp connectors often have a lip that can be pressed in order to remove the wires from the connector.
some common connectors are: - jst - dupont - molex
this video is a very thorough explanation of how to crimp many types of connectors.
https://www.youtube.com/watch?v=GZOh1NzqzzU
multiplication by 2 can be accomplished by shifting the bits in a register to the left by 1
division by 2 can be accomplished by shifting the bits in a register to the right by 1
modulo as well as many other operations can be done similarly
see this post and this article