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BUZZ 2 click

MIKROE-2720

BUZZ 2 click carries the CMT-8540S-SMT magnetic buzzer transducer. The buzzer’s resonant frequency is 4kHz. The click is designed to run on either 3.3V or 5V power supply.

More details

$12.00

Quantity Unit Price
5 $11.40
20 $10.80

BUZZ 2 click carries the CMT-8540S-SMT magnetic buzzer transducer. The buzzer’s resonant frequency is 4kHz. The click is designed to run on either 3.3V or 5V power supply.

How the click works

The CMT-8540S-SMT magnetic buzzer is controlled by the PWM pin on the mikroBUS™ line.

You can create different sound patterns using the Sound library supported in our compilers, or utilize the microcontroller internal PWM module to create the signal for the buzzer. Signal frequency determines the sound pitch, and the duty cycle determines the amplitude (sound volume).

Power supply selection

Onboard VCCIO SEL zero-ohm resistor (SMD jumper) is used to determine whether 5V or 3.3V power supply is used. This resistor is placed in 5V position by default.

Specifications

Type Magnetic
Applications The click is ideal for adding audio signalization feature to your prototype device
On-board modules CMT-8540S-SMT magnetic buzzer transducer
Key Features 4kHz resonant frequency
Interface PWM
Input Voltage 3.3V or 5V
Click board size M (42.9 x 25.4 mm)

Pinout diagram

This table shows how the pinout on BUZZ 2 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
NC 1 AN PWM 16 PWM PWM input
NC 2 RST INT 15 NC  
NC 3 CS TX 14 NC
NC 4 SCK RX 13 NC
NC 5 MISO SCL 12 NC
NC 6 MOSI SDA 11 NC
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground

Programming

Code examples for BUZZ 2 click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet defines the notes and initializes the Sound library.

01 // notes
02 #define cS  261
03 #define dS  294
04 #define e   329
05 #define fS  349
06 #define g   391
07 #define gS  415
08 #define aHa 440
09 #define aS  455
10 #define b   466
11 #define cH  523
12 #define cSH 554
13 #define dH  587
14 #define dSH 622
15 #define eH  659
16 #define fH  698
17 #define fSH 740
18 #define gH  784
19 #define gSH 830
20 #define aH  880
21 void systemInit()
22 {
23     AD1PCFG = 0xFFFF;   
24     TRISD = 0;  
25 }
26 void Buzz_2_Init()
27 { 
28     Sound_Init(&LATD, 0);   
29 }
30 void Buzz_2_Task()
31 {
32     Sound_Play(aHa, 500);
33     Sound_Play(aHa, 500);    
34     Sound_Play(aHa, 500);
35     Sound_Play(fS, 350);
36     Sound_Play(cH, 150);  
37     Sound_Play(aHa, 500);
38     Sound_Play(fS, 350);
39     Sound_Play(cH, 150);
40     Sound_Play(aHa, 650);
41     delay_ms(500);
42     Sound_Play(eH, 500);
43     Sound_Play(eH, 500);
44     Sound_Play(eH, 500);  
45     Sound_Play(fH, 350);
46     Sound_Play(cH, 150);
47     Sound_Play(gS, 500);
48     Sound_Play(fS, 350);
49     Sound_Play(cH, 150);
50     Sound_Play(aHa, 650);
51 }
52 void main()
53 {
54     systemInit();
55     Buzz_2_Init();
56     while( 1 )
57     {
58         Buzz_2_Task();
59     }
60 }

Downloads

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