Chi tiết sản phẩm
The characteristics of the active buzzer are:
1. The active buzzer has an internal oscillation source, so it will be called as soon as it is powered on.
2. The program control is convenient, and a single high and low level of the microcontroller can make it sound, while the passive buzzer But can't.
The characteristics of the passive buzzer are:
1. The passive buzzer does not have an internal oscillation source, so if a DC signal is used, it cannot be made to sound. It must be driven with a square wave of 2K~5K.
2 The sound frequency is controllable, and the effect of "Duolai Mifa Solassie" can be made.
3 In some special cases, a control port can be multiplexed with the LED
Each set weighs about 6g
, a module description
1 The module is driven by a 9012 triode
2 Working voltage 3.3V-5V
6 With fixing bolt holes for easy installation
7 Small board PCB size: 3.3cm * 1.3cm
Two Module interface description (3-wire system)
1 VCC External 3.3V-5V voltage (can be directly connected to 5v microcontroller and 3.3V microcontroller)
2 GND External GND
3 I/O External microcontroller IO port