Hardware Reference
In-Depth Information
MIDI in
(facing solder lugs
of socket)
AREF
GND
D13
D12
D11/PWM2
D10/PWM1
D9/PWM0
D8
+5V
Gnd
Gnd
+9V
2
5
4
+5V
3
1
220
Ω
270
Ω
6N138
Opto-
isolator
1N914
Arduino
Module
D7
D6
D5
D4
D3
D2
Digital1/TX
Digital0/RX
Analog0
A1
A2
A3
A4
A5
+5V
MIDI out
(facing solder lugs
of socket)
220
Ω
2
5
4
3
1
Figure 11-4
MIDI input and output from a micro-
controller. When you have to build
your own MIDI input or output, this is
how you do it.
MADE
IN I TALY
DIGITAL
(PWM
~
)
-
+
L
1
5
10
15
20
25
30
UNO
A
B
C
D
E
TX
RX
ON
ARDUINO
IC
RESET
ICSP
F
G
H
I
J
POWER
ANALOG
IN
1
5
10
15
20
25
30
