January 2004
Intermediate to advanced
348 pages
13h 33m
English
Content preview from Hardware Hacking Projects for Geeks
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Part II: Advanced Hacks, Tools, and Techniques
6. Test out the hardware
Plug the probe assembly into the ADC circuit board, plug a live Ethernet
cable into the SitePlayer board, and connect the SitePlayer power supply.
You should see a power LED light up on the SitePlayer board. If you have a
multi-meter handy, check the voltage across the power and ground pins of
the ADC chip. It should read +5V; if it does not, check your wiring. Follow
each wire from the SitePlayer board over to the ADC board to ensure that
each one is connected according to the schematic diagram. Disconnect
the ADC board and use a multi-meter to measure the voltage between the
ground and +5V pins.
If you are connecting the SitePlayer’s Ethernet port to a hub, use a straight-
through cable. If you are connecting the SitePlayer directly to your PC, use a
crossover cable.
Software Setup Instructions
The SitePlayer is a single-board computer that includes a complete TCP/IP
network protocol stack and a 10BaseT Ethernet port. It needs only a small
amount of code to fetch the data from the ADC and display it on a web
page.
The basic software that runs on the SitePlayer mini web server is a set of
special configuration files and a set of HTML web pages that are served up
when an external browser makes a request. The web pages provide a simple
user interface and conta
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.