![](https://csdnimg.cn/release/download_crawler_static/88722272/bg1.jpg)
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2021/8/9 Sheet of
File: E:\电路城(51单片机)\黑板擦除器\原理图\Sheet1.SchDocDrawn By:
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
RST
9
P3.0/RXD
10
P3.1/TXD
11
P3.2/INT0
12
P3.3/INT1
13
P3.4/T0
14
P3.5/T1
15
P3.6/WR
16
P3.7/RD
17
XTAL2
18
XTAL1
19
GND
20
P2.0
21
P2.1
22
P2.2
23
P2.3
24
P2.4
25
P2.5
26
P2.6
27
P2.7
28
PSEN
29
ALE/PROG
30
EA
31
P0.7
32
P0.6
33
P0.5
34
P0.4
35
P0.3
36
P0.2
37
P0.1
38
P0.0
39
VCC
40
U1
80511 2
Y1
XTAL
30pF
C2
Cap
10uF
C1
Cap Pol1
30pF
C3
Cap
10K
R5
Res2
GND
VCC
1
2
3
4
5
6
7
8
9
*
RESP
S6
SW-PB
Q1
PNP
D1
LED3
S1
SW-PB
S2
SW-PB
S3
SW-PB
S4
SW-PB
S5
SW-PB
GND
10K
R1
Res2
D2
LED3
10K
R2
Res2
D3
LED3
10K
R3
Res2
D4
LED3
10K
R4
Res2
VCC
P30
P31
P32
P33
P34
P31
P32
P33
P34
A
B
C
D
E
F
G
DP
1
2
L1
数码管2
IN1
5
IN2
7
IN3
10
IN4
12
ENA
6
ENB
11
SENSA
1
SENSB
15
OUT1
2
OUT2
3
OUT3
13
OUT4
14
VCC
9
VS
4
GND
8
U2
L298N
VCC
GND
M
B1
Motor
IN1
5
IN2
7
IN3
10
IN4
12
ENA
6
ENB
11
SENSA
1
SENSB
15
OUT1
2
OUT2
3
OUT3
13
OUT4
14
VCC
9
VS
4
GND
8
U3
L298N
VCC
GND
M
B3
Motor
D5
LED3
10K
R6
Res2
K1
Relay-SPDT
GND
VCC
10K
R7
Res2
Q2
PNP
D6
LED3
10K
R8
Res2
K2
Relay-SPDT
GND
VCC
10K
R9
Res2
P27
P30
P27
吸尘器抬起刷子
X
刷子旋转
M
B2
Motor
Y