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The schematic diagram:
In this experiment, by programming the Raspberry Pi, we make the pin 11 of the
Raspberry Pi output square waves of different frequencies alternately, thus driving the
passive buzzer to play music.
Experimental Procedures
Step 1: Build the circuit
For C language users:
Step 2: Edit and save the code with vim or nano.
U
1
p
a
s
s
i
v
e
b
u
z
z
e
r
1
K
R
2
1
2
3
P
1
H
e
a
d
e
r
L
E
D
2
2
0
Ω
R
1
S
+
-
3
2
1
N
P
N
8
0
5
0
Summary of Contents for Ultimate Sensor Kit for Raspberry Pi
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Page 81: ...Now you can see the current temperature is printed on the terminal ...
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Page 141: ... sudo python main py Now you can see the temperature shown on the LCD1602 ...
Page 147: ...Now you can see the voltage value shown on the segment display ...
Page 150: ...Step 3 Run sudo python main py Now you can see the voltage value shown on the LCD1602 ...
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