> anyone done any work with power management? i mean > if > you're running linux you don't really want your > system > shutting down all of a sudden. plus i could see the > use > for other normal laptop power management things like > stopping the disks from spinning as much. Power management has been another interesting topic here. It's been a while since I looked at drive spin down issues with Linux. But here was my experience - Although many batteries are "smart" monitoring their own current capacity, few manufacturers (if any) have shared how to extract that information. Although not the most accurate for knowing the actually capacity left, I opted for voltage monitoring because it's fairly simple. There are a couple options for voltage monitoring - I2C chips (which actually have several different kind of sensors and are communicated with through a chip designed to interface with the serial port). I actually found a "starter board" from a data acquisition company for $15 with 4 analog and 2 digital lines. Unfortunately they no longer sell this board. The main issue is to find system hardware that uses very little power. I highly recommend that you look at wearforge.perilith.com for info. Many of us have posted ideas and techniques there. > > rick i have a magellan 315 i believe. they sell a > serial > cable for it, but the connection itself to the GPS > is > simple so i might wire one up myself. there are 4 > contacts > on the back of the GPS 2 are power and 2 are data. I'm going to be making my cables soon. Garmin sells their stuff proprietarily.. so it costs an arm and a leg. I found a group of people that sell Garming connectors - I bought 2 for $15. I bit high for a piece of plastic and metal tabs - but a LOT cheaper than garmin's price. Rick ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca -- Subscription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" toWear-Hard Mailing List Archive (searchable): http://wearables.blu.org Please, *PLEASE* don't subscribe through a forward/expander/false domain
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