Create a musical organ using micro-controller
- 1. United International University Presented By: Mahamudul Karim Khondaker Project Name: Create a musical organ using AT89C51 MCU
- 3. • AT89C51 • 8 push button key pad • Resistor • Capacitor • Speaker (8ohm,25W) • Crystal • Digital oscilloscope
- 4. • Check keypad key pressed or not. • Read data from table to memory. • if pressed then wait for debouching and send data to port 1. • for that key use table data from memory to generate a particular frequency. • generate a tone through the speaker. • Return to 1 step.
- 5. Ground All Rows All keys open? Read all columns All keys down? Wait for debouching Read all columns All keys down? Ground next row Read all columns All keys pressed in this row? Find which key is pressed Get scan code from tables Generate respective frequency with respect to the rate given in the memory S t a r t End Read all columns No No No Yes Yes No Yes Yes Return
- 7. PCV Designee
- 12. Our project on musical organ which we can also called mini piano. When we do this project we know how the piano work. In this project we are generating the same friquencies whch are excately same as sa re ga ma pa dha ni sa by using the controller