ELM 329 - Page 75

Example Applications (continued)
75 of 83
ELM329
ELM329DSC Elm Electronics – Circuits for the Hobbyist
www.elmelectronics.com
Figure 9.
A CAN to USB Interpreter
X1
4.00MHz
C6
27pF
OBD
Interface
(J1962)
R1-4
470Ω
+5V
C5
27pF
+5V
+5V
+5V
CAN-H
6
CAN-L
14
1
2
3
4
5
6
7
8
MCP2561
329
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
U1
+5V
R6
470Ω
L1-L4
L6
PWR
R7
100Ω
R8
100Ω
C7
560pF
C8
560pF
R9
470KΩ
R10
100KΩ
C10
0.01µF
U2
R5
470Ω
+5V
+5V
C9
0.1µF
Active
L5
+ +
Battery
Positive
16
Signal
Ground
5
+5V
C3
0.1µF
D1
U3
LP2950
C4
10µF
10V
C2
2.2µF
50V
C1
0.1µF
50V
R11
4.7KΩ
USB
Interface
(mini B)
+5V
D3
3 (TxD)
5 (SG)
1 (DCD)
4 (DTR)
6 (DSR)
7 (RTS)
8 (CTS)
FTDI
DB9-USB-D5-F
9 (RI)
2 (RxD)
U4
+5V
D2
5.0V
TVS