Velleman HC-SR05, User Manual, Page: 4 / 4

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Title
Number Revision Size
A4
Date: 201
8
Sheet of
File:
F:\.\ultrasonic.SchDoc
Drawn By:
ultrasonic
REV01
jieliang mo
75K R9
1NF C17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
UART1_CK/TIM2_CH1/BEEP/(HS)PD4
UART1_TX/AIN5/(HS)PD5
UART1_RX/AIN6/(HS)PD6
NRST
OSCIN/PA1
OSCOUT/PA2
VSS
VCAP
VDD
(SPI_NSS)TIM2_CH3/(HS)PA3
PD3(HS)/AIN4/TIM2_CH2/ADC_ETR
PD2(HS)(AIN3)(TIM2_CH3)
PD1(HS)/SWIM
PC7(HS)/SPI_MISO(TIM1CH2)
PC6(HS)/SPI_MOSI(TIM1_CH1)
PC5(HS)/SPI_SCK(TIM2_CH1)
PC4(HS)/TIM1_CH4/CLK_CCO(AIN2)(TIM1_CH2N)
PC3(HS)/TIM1_CH3(TL1)(TIM1_CH1N)
PB4(T)/IIC_SCL(ADC_ETR)
PB5(T)/IIC_SDA(TIM1_BKIN)
U1
STM8103F3P
16M
Y1
22pF C1
22pF C2
VCC
1uF
C3
0.1uF
C4
reset
10NF
C5
4.7K
R1
VCC
reset
VCC
1uF
C6
V
G
RST
SWIM
VCC
reset
swim
swim
R1IN
13
R2IN
8
T1IN
11
T2IN
10
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
R1OUT
12
R2OUT
9
T1OUT
14
T2OUT
7
GND
15
VCC
16
U2
MAX3232
100NF C9
100NF C8
100NF
C12
VCC
1K
R3 100NF
C10
100NF
C11
1
2
EMIT
1
2
RECEIVE
10K
R4
10NF
C13
+
3
-
2
1 +
4
-
1
1
U3A
LM324
-
6
+
5
7
U3B
LM324
-
9
+
10
8
U3C
LM324
-
13
+
12
14
U3D
LM324
1K 1%
R5
1K 1%
R6
VCC
1uF
C14
100nF
C15
6K2
R7
1NF
C16
1k
R8
22pf C18
10NF
C19
10K
R10
75K
R11
VCC
3k9
R12
10K
R13
3K9
R14
3
2
1
Q2
8050
3 2
1
Q1
8550
10K
R15
VCC
Signal
120K
R16
120K
R17
10NF
C20
3M3
R19
75K
R20
Thteshold
1uF
C21
VCC
Tng
Echo
56K
R21
10K
R22
10K
R23
1
2
3
4
5
P1
Connector_5P
out