Constructing with LEGO Technic 101 Pro Preview

In general we use the following parst for constructing with LEGO Technic:

The first and most important principle is as follow. When you want to connect two beams you must use at least two pins. Otherwise you risk to have the following issue:

However, if you place the two pins close to one another, the construction will be still unstable.

In order to have a stable constructions, you need to leave space between the two connection points.

When you want to connect two beams at an angle, you can use one of the angled beams.

For example if you want to connect this two beams:

you can achieve it using the larger L-shaped beam:

Another two parts, that are quite handy when it comes to connect beams at angle are:

For example, to connect this two beams:

you can do as follow:

Another example is:

At last, here are few examples how you can attach a sensor to the brick at different positions: