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Chapter 12 — Going Wireless with Wi-Fi 243

WiMicro Configuration

After you’ve constructed the carrier board and tested the continuity to ensure you have no short
circuits, plug in the WiMicro board and feed in DC power from a 9V wall wart. The WiMicro
board should power up. Figure 12-10 shows the WiMicro powered up. Notice the lower-right
power LED. If the power LED doesn’t immediately come on, remove power quickly and look
over your carrier board again. Be sure to screw on the included antennae if you haven’t already.
The upper-left LED indicates that the first serial port is active.

FIGURE 12-10: Configuring WiMicro and carrier board, powered by DC wall wart

Finding the WiMicro on the Net
Just like finding any new device on your network, you can use a broadcast ping to find it. With
Wi-Fi there’s the additional issue of getting both the device in question and your computer on
the same wireless network. When the WiMicro first powers up, it creates an ad-hoc wireless
network called LTRX_IBSS. (For Lantronix IBSS, IBSS is the technical abbreviation for an
ad-hoc network.) Configure your computer to join that network. When you connect, only you