Detail
The scale of the circuit can produce different sounds, while different keys correspond to different scales. The play of the electronic organ is to use the fingers to press different keys to produce different scales. The principle is that the circuit IC555 is connected to an oscillator, whose oscillation frequency is determined by the resistance of the circuit (R1- R10), so different sounds will be generated due to different keys.
This DIY product needs to be soldered and assembled by yourself.
2.Parameters:
1>. Power supply voltage: DC3-12V
2>. PCB size: length 13.5CM* width 2.2CM
3.Features:
1>. It is simple and practical, and the power consumption is small, and the circuit is driven by an integrated circuit. The parts are few, and the line is simple and clear.
2>. In the process of debugging, the understanding of the principle of the circuit will be deepened.
4.Component list：
|
NO. |
Component Name |
PCB Marker |
Parameter |
QTY |
|
1 |
IC Socket |
U1 |
DIP-8 |
1 |
|
2 |
NE555 |
U1 |
DIP-8 |
1 |
|
3 |
KF301-2P Connector |
|
|
1 |
|
4 |
Electrolytic Capacitor |
C4 |
4.7uF |
1 |
|
5 |
Capacitor |
C1-C3 |
0.1uf 104 |
3 |
|
6 |
Metal Film Resistor |
R1,R2 |
1K |
2 |
|
7 |
Metal Film Resistor |
R3,R4,R6-R9 |
2K |
6 |
|
8 |
Metal Film Resistor |
R5 |
10K |
1 |
|
9 |
Cable |
|
5cm |
2 |
|
10 |
Button |
S1-S8 |
12*12*7.3mm |
8 |
|
11 |
Button Cap |
|
|
8 |
|
12 |
Battery box |
|
AA*2 |
1 |
|
13 |
Speaker |
SP |
8ohm 0.25W 5cm |
1 |
|
14 |
PCB |
|
22*135mm |
1 |
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