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Grou Ground
+12 volts, optional
+5 volts
15 - UART1_DATAOUT
16 - UART1_DATAIN
18 - ISH_GPIO3
19 - ISH_GPIO4
20 - ISH_GPIO5
21 - ???
22 UART2_DATAOUT
23 - UART2_DATAIN
24 - ISH_GPIO0
25 - ISH_GPIO1
26 - ISH_GPIO2
Atomic PAt
Atomic Pi Header
View from bottom of board
Power Pins
1
2
15
16
18
19
20
21
22
23
24
25
26