
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
Содержание Ultimate Sensor Kit for Raspberry Pi
Страница 1: ......
Страница 12: ......
Страница 21: ......
Страница 42: ......
Страница 58: ......
Страница 66: ......
Страница 70: ......
Страница 81: ...Now you can see the current temperature is printed on the terminal ...
Страница 90: ......
Страница 93: ......
Страница 99: ......
Страница 102: ...Step 3 Run sudo python 26_segment py Now you can see the number 0 9999 shown repeatedly on the digital display ...
Страница 105: ......
Страница 107: ......
Страница 114: ......
Страница 117: ......
Страница 120: ......
Страница 141: ... sudo python main py Now you can see the temperature shown on the LCD1602 ...
Страница 147: ...Now you can see the voltage value shown on the segment display ...
Страница 150: ...Step 3 Run sudo python main py Now you can see the voltage value shown on the LCD1602 ...
Страница 151: ......