Cartft FLEETPC-ARM-300 Reference Manual page 14

Power Connection 3 – The FLEETPC-ARM-300 CN3 pin1/2/3 are connected to a
cigarette lighter socket. Since CN3 pin3 is connected to DC input, MCU will always detect
an ignition signal as long as car power is on. Even software runs "shutdown –h now" or
"echo 0 >
/sys/class/leds/pwr_gpio/ brightness" commands (see "MCU-controlled power on/off"
descriptions in this section) to turn off system power, MCU will turn on power again in 5
seconds. The FLEETPC-ARM-300 can only be turned off when the cigarette lighter
socket power
output is off.
Power Connection 3
Cigarette
lighter plug
Power Connection 4 – The FLEETPC-ARM-300 CN3 pin1/2/3 are connected to a
+12V DC power adapter. Since CN3 pin3 is connected to DC input, MCU will always
detect an ignition signal as long as DC adapter is on. Even software runs "shutdown –h
now" or "echo 0 >
/sys/class/leds/pwr_gpio/ brightness" commands (see "MCU-controlled power on/off"
descriptions in this section) to turn off system power, MCU will turn on power again in 5
seconds. The FLEETPC-ARM-300 can only be turned off when the DC power adapter
output is off.
Power Connection 4
FLEETPC-ARM-300 Series
3 2 1
CN3
FLEETPC
‐ARM‐
3 2 1
CN3
FLEETPC‐ARM‐300
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