The knowledge of mechanical keyboard switch
1. The key cap
The key cap isn’t part of the mechanical switch but it is partially responsible for the noise produced when the key switch is bottomed out.
2. The stem
The shape of the stem alters the actuation force and travel distance of the switch. It creates the keystroke feel and decides the switch type.
3. The upper housing
It protects and guides the stem. It is also the part that the key cap hits when you press the key.
4. The coil spring
The resistance of the coil spring determines the amount of pressure needed to actuate the key. It also helps the switch to slide back to its original position.
5. The base housing
This is where the upper housing is mounted. This is the piece that attaches and clips to the PCB.
6. The crosspoint contact
A tiny gold piece where the electricity flows. Once you press a key, the contact mechanism hits the PCB and closes the switch circuit, thus rendering a key press.
Types of mechanical switches
There are three types of mechanical switches:clicky,tactile and linear, They are defined by their keystroke behaviour.
Linear switches have the simplest operation.
It moves straight up and down without any tactile feedback or clicking noise.
The smooth keystroke allows for more rapid actuation, making them the preferred switch for gamers.
Tactile switches provide tactile feedback.
it offers a noticeable bump in the middle of travel to let you know that your key press has been registered.
They are ideal for typing because you get a slight indication of a key press no need to bottom out your keys.
Click switches works the same way as tactile ones. But they provides a distinct “click” sound when the key is activated.
They are great for those who want a distinct indication that of a key press and for those who love the “click” sound.