The melody circuit is very simple, the controller 16f84 can be used in different series, and the music chart can be useful for creating different melodies. A good example for people new to PIC Programming.
PIC and I took those instructions in a program for converting 16F84. From this and ‘born the following project that generates a nice and famous melody lasting more than one minute (reset the PIC to restart it). In the scheme have been omitted power connections that are overtones.
PIC16F84A Simple Melody
| NOTA | CODICE | FREQUENCY HZ | RITAR D | RIPET L8 0,15 | RIPET L4 0,3 | RIPET L2 0,6 |
| DO | C | 261,630 | 211 | 39 | 78 | 157 |
| RE | D | 293,660 | 188 | 44 | 88 | 176 |
| RE# | D# | 311,645 | 177 | 47 | 93 | 187 |
| MI | E | 329,630 | 168 | 49 | 99 | 198 |
| FA | F | 349,230 | 158 | 52 | 105 | 210 |
| FA# | F# | 370,615 | 149 | 56 | 111 | 222 |
| SOL | G | 392,000 | 141 | 59 | 118 | 235 |
| SOL# | G# | 416,000 | 133 | 62 | 125 | 250 |
| LA | A | 440,000 | 125 | 66 | 132 | 264 |
| SI- | B- | 466,940 | 118 | 70 | 140 | 280 |
| SI | B | 493,880 | 112 | 74 | 148 | 296 |
| DO (cent) | C | 523,250 | 105 | 78 | 157 | 314 |
| RE | D | 587,330 | 94 | 88 | 176 | 352 |
| RE# | D# | 623,295 | 88 | 93 | 187 | 374 |
| MI | E | 659,260 | 83 | 99 | 198 | 396 |
| FA | F | 698,460 | 79 | 105 | 210 | 419 |
| FA# | F# | 741,225 | 74 | 111 | 222 | 445 |
| SOL | G | 783,990 | 70 | 118 | 235 | 470 |
| SOL# | G# | 831,995 | 66 | 125 | 250 | 499 |
| LA | A | 880,000 | 62 | 132 | 264 | 528 |
| SI- | B- | 933,885 | 59 | 140 | 280 | 560 |
| SI | B | 987,770 | 55 | 148 | 296 | 593 |
| DO | C | 1046,500 | 52 | 157 | 314 | 628 |
| RE | D | 1174,700 | 46 | 176 | 352 | 705 |
| RE# | D# | 1246,500 | 44 | 187 | 374 | 748 |
| MI | E | 1318,500 | 41 | 198 | 396 | 791 |
| FA | F | 1396,900 | 39 | 210 | 419 | 838 |
| FA# | F# | 1482,450 | 37 | 222 | 445 | 889 |
| SOL | G | 1568,000 | 35 | 235 | 470 | 941 |
| SOL# | G# | 1664,000 | 32 | 250 | 499 | 998 |
| LA | A | 1760,000 | 31 | 264 | 528 | 1056 |
| SI- | B- | 1867,750 | 29 | 280 | 560 | 1121 |
| SI | B | 1975,500 | 27 | 296 | 593 | 1185 |
| PAUSE | B | 19000,000 | 2 | 2850 | 5700 | 11400 |
Source: stor.altervista.org Simple Melody Circuit source code schematic files alternative link:
PIC16F84A Application with a Simple Melody Circuit
Password: 320volt.com
Published: 2009/10/16 Tags: microchip projects, microcontroller projects, pic16f84 projects, simple circuit projects
8051 Bascom AVR Projects Atmel Circuits Archive
With Atmel series (AT89C2052, AT90S2313, AT89S8252, etc..) Was very spacious with quality archive PIC series microcontroller atmel version of the circuit can find a lot.
Usb, alarm, LCD, nokia 3310, nokia 6100, display, LED, sms, phone, etc.. protel pcb circuit has a lot of schema files in some projects have Visual Basic program atmel interested persons should visit a site you should look at using the PIC though there are many interesting projects such as “the transfer of data on Excel”