Ultrasonic Range Finder

3.8.1 Buttons

The MODE function button is defined in the firmware for different range switching.

The RESET button is not applied in the firmware in this design, it is open for the user to use freely.

Note: Parts marked with “N.M” should not be mounted by default.

Table 3-5. Buttons Pin Map
Signal Name	Pin in MCU
Function_BUT_PB0	PB0
Reset_BUT_PC5	PC5

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