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To calculate exact value for TH and TL use this small application it will help you. To get equal ON and OFF time for you generated pulse call delay after each statement like this. ON time(as per your delay value) and OFF time 1us if you are using 11.0592MHz Crystal. Orcad design for Buzzer interfacing with 8051 Buzzer interfacing with 8051 / Name : main.c Purpose : Source code for BUZZER Interfacing with AT89C52. This project shows the interface with AT89S52 microcontroller to a buzzer. 10F capacitor and 10K is used to provide Power On Reset (POR) for the 8051 microcontroller. 24MHz crystal is connected to provide the required clock for the microcontroller. This code will generate pulse but ON time and OFF time of pulse will not be same!Īs you defined in your code you are turning P1_0 high and then keeping it high as per you delay calculation, after that in next line you are making it low and then there is no delay!!!! Here, i world like to discuss the interfacing of a small buzzer with 8051. Interfacing Unipolar Stepper Motor with 8051 using L293D This is the circuit diagram of driving a bipolar stepper motor using 8051 microcontroller using L293D. If you know please tell what is the exact resonant frequency of a small 10mm sized buzzer. view raw pic16f877aSwitchLed.c hosted with by GitHub. This is the code that works for me.it continuously produces sound after a small delay during power 'on' of microcontroller.but still i don't know about its output frequency In this tutorial we will see how to interface a switch and buzzer with PIC18F4520 starter board. in the above code i try to use P0.0 as switch input where buzzer is to be sounded at P1.1 when we press the switch.the assigned value for p is meaning-lessĭelay1() //to produce a small delay after power on

Thanks cool mirza.yes it's a great mistake.