Schematic
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
Title Nexus duino
Number RevisionSize
A3
Drawn By:liaochunlong
(RESET) PC6
29
PD0 (RXD)
30
PD1 (TXD)
31
PD2(INT0)
32
PD3 (INT1)
1
PD4 (XCK/T0)
2
VCC
6
GND
3
PB6 (X1/TOSC1)
7
PB7 (X2/TOSC2)
8
PD5 (T1)
9
PD6 (AIN0)
10
PD7 (AIN1)
11
PB0 (ICP)
12
PB1 (OC1A)
13
PB2 (SS/OC1B)
14
PB3 (MOSI/OC2)
15
PB4 (MISO)
16
PB5 (SCK)
17
AVCC
18
AREF
20
GND
21
(ADC0) PC0
23
(ADC1) PC1
24
(ADC2) PC2
25
(ADC3) PC3
26
(ADC4/SDA) PC4
27
(ADC5/SCL) PC5
28
ADC6
19
ADC7
22
VCC
4
GND
5
IC3
ATMEGA328P-20AU
TXD
1
DTR#
2
RTS#
3
VCCIO
4
RXD
5
RI#
6
NC1
8
DSR#
9
DCD#
10
CTS#
11
TEST
26
AGND
25
GND1
7
GND2
18
GND3
21
USBDP
15
USBDM
16
3.3VOUT
17
RESET#
19
USBS4
12
USBS3
14
USBS2
13
USBS1
22
USBS0
23
NC2
24
OSC1
27
OSC0
28
VCC
20
IC4
FT232RL
+5v+5v
RX
GRLED
TX
GRLED
+5v
RX
TX
C3
104P
RESET
C5
104P
A0
A1
A2
A3
A4/SDA
A5/SCL
A6
A7
+5v
+5v
C2
104P
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
Y
16MHZ
C6
22P
C7
22P
RESET
C1
104P
1 2
3 4
5 6
ICSP
+5v
D11/MOSI
D12/MISO
D13/SCK
RESET
AREF
+5v
+5v
D0/RX
D1/TXTX
RX
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
AREF
A0
A1
A2
A3
A4/SDA
A5/SCL
A6
A7
PWR
REDLED
L
GRLED
OUT
1
GND
2
IN
3
IC6 LM2940
C9
104P
C10
104P
D1
SS14
C11
47U/25V
C12
47U/25V
VIN
3
2
1
84
IC5A
LM358
5
6
7
IC5B
LM358
VCC30
R9
10K
R10
10K
VIN
C8
104P
IC7
NDT2955
USBVCC
1
2
3
4
5
6
USB
USBVCC
+5v
+5v
1
2
3
4
X3
M_VIN
A4/SDA
A5/SCL
GND
+5V
GND
1
VCC
2
EN
3
RXD
4
TXD
5
AUX
6
SET
7
APC220
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
A0
A1
A2
A3
A4/SDA
A5/SCL
A6
A7
EVCC
+5v
1
2
3
4
5
6
7
8
9
10
11
12
J1
EVCC
1
2
3
4
5
6
7
8
9
10
11
12
J2
EVCC
1
2
3
4
5
6
7
8
9
J3
EVCC
1
2
3
4
5
6
7
8
9
J4
1
2
3
4
5
6
7
8
9
10
11
12
J5
1
2
3
4
5
6
7
8
9
10
11
12
J6
+5v
R19
4.7K
R20
4.7K
R6
4.7K
R12
330
R18
1K
R13
620
R8
1K
R7
1K
VCC30
1
2
3
4
5
6
7
8
J7
1
2
3
4
5
6
7
8
J8
1
2
3
4
5
6
7
8
J9
1
2
3
4
5
6
7
8
J10
1
2
3
4
5
6
J15
1
2
3
4
5
6
J16
1
2
3
4
5
6
7
8
J11
1
2
3
4
5
6
7
8
J12
RESET
1
2
J18
EVCC
3V3
VIN
R5
1K
4
1 2
3
RST
5x6
R1
100k
R2
100k
11
12
13
IC1D
74HC00
1
2
3
IC1A
74HC00
4
5
6
IC1B
74HC00
8
9
10
IC1C
74HC00
R3
100k
R4
100k
VCC +5v
1 2
3 4
5 6
7 8
J13
RESET_EN
EVCC
3V3
GND
1
GND
10
GND
11
GND
20
OUT1
4
OUT2
5
OUT3
16
OUT4
17
INPUT1
7
ENA
8
INPUT2
9
INPUT3
13
ENB
14
INPUT4
15
VS
6
VSS
12
SENSEA
2
SENSEA
19
NC
3
NC
18
IC2
L298SO20
1
2
3
4
J14
+5v
M_VIN
R14
1K
R15
3.3K
R11
2K
4
12
3
S1
5x6
4
12
3
S2
5x6
4
12
3
S3
5x6
4
12
3
S4
5x6
4
12
3
S5
5x6
4
12
3
S6
5x6
4
12
3
S7
5x6
+5v
A7
+5v
+5v
+5v
+5v
D4
D5
D6
D7
D2
D3
1 2
3 4
5 6
J17
R16
10K
R17
10K
+5v
C4
104P
D0/RX
D1/TX
C14
104P
D2
SS14
D3
SS14
D4
SS14
D5
SS14
D6
SS14
D7
SS14
D8
SS14
D9
SS14
C15
104P
C16
104P
C18
104PC17
47U/25V
C13
47U/25V
1
2
3
PWRIN
1
2
M_VIN
1
2
VIN=M_VIN
D10
SS14
VIN
1
2
3
4
J19
1
2
3
4
J20
1
2
3
4
J21
1.3