Hardware Reference
In-Depth Information
through its power supply before connecting it via USB to your computer.
Otherwise, you may damage your board.
Ethernet port (10)
The Ethernet port on the board will let you connect it to a wired network
so that it can communicate with other computers and devices on the
network, or access the Internet.
Mini PCI express slot (not pictured)
If you want to make your network connection wireless, you can connect
a WiFi card to the
Mini PCI Express slot
on the bottom of the board. This
slot can also accommodate cards that offer additional functionality such
as more storage space, GSM access for connecting to cellular networks,
Bluetooth for wireless device connectivity, and much more.
Clock battery power (11)
This connector will let you wire up a small 3-volt coin cell battery to the
Galileo so that the processor can keep track of the date and time even
when the board is not connected to 5 volts.
Reboot button (12)
This button will reboot the board, including Galileo's Linux operating
system.
Reset button (13)
This button will restart your code and send the reset signal to any shield
attached to the expansion header. Galileo's Linux operating system will
remain running as normal and won't restart.
JTAG header (14)
This 10-pin connector is mostly used by electrical engineers or advanced
hobbyists to test and debug boards.
IOREF jumper (x3) (15)
This jumper lets you change the logic voltage level of the board from 5
volts to 3.3 volts for compatibility with 3.3-volt shields and components.
Throughout this topic, you'll be using Galileo in its 5-volt mode.
VIN jumper (16)
Pulling this jumper out will disconnect the VIN pin from Galileo's 5-volt
regulator. If you're using a shield that requires more than 5 volts on the
VIN pin, you must pull out this jumper to protect the board from damage.
I2C jumper (17)
This jumper lets you change the I2C address of a couple of on-board
components. You may need to do this if you're using I2C components
that conflict with the components on the board. In all likelihood, you
won't need to use this.
