1
5
10
15
20
25
30
35
40
45
50
55
60
1
5
10
15
20
25
30
35
40
45
50
55
60
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
H
I
J
AREF
GND
RESET
3V3
PWM
PWM
PWM
L
TX
RX
USB
EXT
PWR
SEL
PWR
ICSP
PWM
PWM
PWM
TX
RX
3
1
2
1
1
1
0
1
9
8
DIGITAL
7
6
5
4
3
2
1
0
1
5V
Gnd
POWER
www.arduino.cc
ANALOG IN
Vin
0
1
2
3
4
5
Arduino