Main
MIDI protocol
Principle
Pickup
Frets and strings
Power
Analog part
PIC16x74
COM-port
MIDI-port
Control and indications
Algorithm of note detectionGallery
MIDI-files
About author |
Part list and pre-calculation of the cost of electronics
| Item |
price, $ |
quantity |
cost, $ |
| PIC16F74 (microcontroller) |
6 |
1 |
6 |
| K1401UD2A (4-channel opamp) |
0.33 |
2 |
0.67 |
| K157DA1 (2-channel full rectifier) |
0.13 |
3 |
0.4 |
| Prototyping board |
4.67 |
1 |
4.67 |
| Trimming resistor |
0.5 |
6 |
3 |
| LM2950-5.0 (linear power regulator) |
1.67 |
1 |
2.67 |
| KD102B (diode) |
0.07 |
105 |
7 |
| LED 5mm, red, bright |
0.67 |
2 |
1.33 |
| LED 5mm, green, bright |
2 |
1 |
2 |
| Electrolytic capacitor, 30V |
0.17 |
8 |
1.33 |
| Ceramic capacitor 1 uF |
0.17 |
8 |
1.33 |
| Resistor, 0.125 W |
0.02 |
31 |
0.62 |
| HCM1216A (beeper) |
0.57 |
6 |
3.4 |
| Crystal oscillator 20 MHz |
0.5 |
1 |
0.5 |
| Battery compartment |
1 |
1 |
1 |
| Power switch |
0.67 |
1 |
0.67 |
| DIN5 connector, shell-mounting |
0.67 |
1 |
0.67 |
| DIP14 panel |
0.05 |
5 |
0.25 |
| DIP40 panel |
0.15 |
1 |
0.15 |
| Stands 20 mm |
0.2 |
3 |
0.6 |
| Button |
0.17 |
1 |
0.17 |
Total: |
$37.42 |
|