SLAU857A May   2021  – July 2021 MSP430FR2476 , MSP430FR2512 , MSP430FR2522 , MSP430FR2532 , MSP430FR2533 , MSP430FR2632 , MSP430FR2633 , MSP430FR2672 , MSP430FR2673 , MSP430FR2675 , MSP430FR2676

 

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4 Mechanical Structure and Hardware Design

As the first step of capacitive touch design, the mechanical structure and hardware design greatly affect the sensitivity and noise immunity of the capacitive touch solution. Therefore, before reading this chapter, first read Section 2 to understand the basic principles of capacitive touch. In general, the mechanical structure and hardware design are mainly trade-offs between structural constraints, sensitivity, and noise immunity. This means that it is often necessary to repeatedly modify a design based on test feedback.