MIKROE-2720

      BUZZ 2 click PID: 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. 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). Notes  Pin  Pin  Notes    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  8  GND  GND  9  GND  Ground  GND  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 21 22 23 24 25 26 27 28 29 30 31 32 33 34 #define aH 880 void systemInit() { AD1PCFG = 0xFFFF; TRISD = 0; } void Buzz_2_Init() { Sound_Init(&LATD, 0); } void Buzz_2_Task() { Sound_Play(aHa, 500); Sound_Play(aHa, 500); Sound_Play(aHa, 500); 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Sound_Play(fS, 350); Sound_Play(cH, 150); Sound_Play(aHa, 500); Sound_Play(fS, 350); Sound_Play(cH, 150); Sound_Play(aHa, 650); delay_ms(500); Sound_Play(eH, 500); Sound_Play(eH, 500); Sound_Play(eH, 500); Sound_Play(fH, 350); Sound_Play(cH, 150); Sound_Play(gS, 500); Sound_Play(fS, 350); Sound_Play(cH, 150); Sound_Play(aHa, 650); } void main() { systemInit(); Buzz_2_Init(); while( 1 ) { Buzz_2_Task(); } }                                                                         https://shop.mikroe.com/buzz‐2‐click 9‐6‐17