15
GPIO Pins Used by Zero2Go
Besides the +5V and GND pins, Zero2Go uses GPIO-4 (BCM naming) to monitor the
button tapping. The TXD pin is also monitored but it will not affect the data transferring
via serial port. Zero2Go will cut power when TXD pin gets pulled down for long
enough (> 3 seconds).
GPIO
(BCM)
Name
Physical
Name
GPIO
(BCM)
3.3V
1
2
5V
2
SDA 1
3
4
5V
3
SCL 1
5
6
GND
4
GPIO 7
7
8
TXD
14
GND
9
10
RXD
15
17
GPIO 0
11
12
GPIO 1
18
27
GPIO 2
13
14
GND
22
GPIO 3
15
16
GPIO 4
23
3.3V
17
18
GPIO 5
24
10
MOSI
19
20
GND
9
MISO
21
22
GPIO 6
25
11
SCLK
23
24
CE0
8
GND
25
26
CE1
7
0
SDA 0
27
28
SCL 0
1
5
GPIO 21
29
30
GND
6
GPIO 22
31
32
GPIO 26
12
13
GPIO 23
33
34
GND
19
GPIO 24
35
36
GPIO 27
16
26
GPIO 25
37
38
GPIO 28
20
GND
39
40
GPIO 29
21
Summary of Contents for Zero2Go Omini
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