The hollow space inside the spring can be used to install mechanical buttons (see Figure 15).
Compared to most other industries, people have higher expectations for car design. Last weekend,
One wire, spacing, and another wire are all required to form a capacitive sensor.
The circuit consists of four components, with the discharge switch initially in an open circuit state.
The output frequency is used to time a pulse-width modulator (PWM), whose output is a waveform consisting of alternating low-level and high-level cycles
When two capacitive sensors are placed close to each other, both can detect if a finger presses between them.
