PIC16F84A microcontroller with the basic DO-RE-MI-FA pic of a simple circuit that can produce notes prepared by software RA3 assembly speaker connected to the output of 0.5W. Guide to use the PIC electronic work, I made a Doremifa organ using the 16F84A as the 2. We put out the sound of each Doremifa in SW8 or tact and pulled up by clearing 7BIT of the OPTION register because it is just PORTB 8BIT. Circuit also program a timer which I made before the much the same.
PIC16F84A DO-RE-MI-FA Schematic
Source: web1.incl.ne.jp PIC16F84A Melody Circuit schematic pic assembly source code alternative link:
Simple Melody Circuit with PIC16F84A DO-RE-MI-FA
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Published: 2009/01/23 Tags: microchip projects, microcontroller projects, pic assembly example, pic16f84 projects, simple circuit projects
Simple Electronic Piano with PIC16F84A
The PIC has a white arrow in the transistor and the clock is a little to the right.
Pull-down resistor Tact switches are in line with the lower back. PIC fast 200ns port in the meantime and have pressed any button to check each one to switch ON, OFF is a pseudo-noise in the oscillator. The PIC is more convenient and I was able to adjust the volume to a variable resistor connected to the base of the transistor because it connects directly drive the output speaker.
PIC16F84A Electronic Piano