introduce the hardware parts or the software features, usually consideration by design.
Describe the user scenario, when users will use it, why they will use it.
If tools and materials need to be prepared in advance, please indicate.
Be sure to note that some operations involve safety issues. For example, the whole machine should be powered off before replacing the circuit board. Necessary safety tips can reduce the probability of equipment damage. Usually we recommend stating the state of the machine at the time of operation
It is recommended to insert pictures or video descriptions
How to verify that the above operations are successful and achieve the expected goal.
something you want extra clarification.