The car reversing radar is a good warning device for avoiding rear obstacles and avoiding collisions. It uses the principle of ultrasonic to make parking and reversing easier and safer. Renesas Electronics (formerly NEC)'s 78K0/Kx2 series and 78K0/Fx2 provide users with different requirements. The 78K0/Fx2 series provides one CAN interface with internal hardware optimized UART for LIN bus, built-in oscillator, etc. Device. And the built-in watchdog and the built-in oscillator as the frequency make the whole system more secure.
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The Mechanical Buzzer uses a magnet to move a reed up and down quickly to emit a lower-pitch buzz! It's quieter than the Piezoelectric Buzzer but uses more power, so you the terminals will have to be closer to the battery packs. To use them, you'll need to match the wire colors to the wires from the battery pack.
Mechanical Buzzer
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