Post by thread:[EE]: BGMicro GPS Units

Hi everyone, So after not too much work (and a C-compiler) I've managed to get the GPS up and running with a PIC and an LCD. So far, so good. My next steps are: 1) Figure out how to power it 2) Build a board and a box 3) Improve the software 4) Waterproof everything so that when I drop it in the water it will survive (and float!) Anyway, I'm currently not so concerned with 2-4. 1 seems to be a bit of an issue. With the PIC+LCD+GPS, the current drawn is 250 mA from the 7.5 V supply (regulated down to 5 V, 7805 style). One thing I will do is see how much savings a switcher will get me in the regulation dept. The other thing is to figure out what kind of battery system to use. My question is, has anyone else working with these units decided on which way to go for portable power? I'm looking at NiMH after reading through the archives, but if someone's already spec'ed out some batteries for the same system, I'd like to hear about it! Also, if anyone in the lower mainland (BC, Can) region might want to go in on some PCB's for the same system just e-mail me offlist and we can see about getting a quantity discount from a PCB maker. Either that or it might just be wirewrapped. Thanks. Wade -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

Wade, While not in the BC area, I might be interested. I'd like to see what your project does first though :) Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams Wade Carpenter wrote: > Also, if anyone in the lower mainland (BC, Can) region might want to go in > on some PCB's for the same system just e-mail me offlist and we can see > about getting a quantity discount from a PCB maker. Either that or it > might just be wirewrapped. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

At 01:41 PM 20/08/02 -0400, you wrote: >Wade, >While not in the BC area, I might be interested. I'd like to see what >your project does first though :) > >Josh >-- >A common mistake that people make when trying to design something >completely foolproof is to underestimate the ingenuity of complete >fools. > -Douglas Adams > >Wade Carpenter wrote: > > Also, if anyone in the lower mainland (BC, Can) region might want to go in > > on some PCB's for the same system just e-mail me offlist and we can see > > about getting a quantity discount from a PCB maker. Either that or it > > might just be wirewrapped. Wade I can't find your original message to reply to but I might be interested depending on what the setup has to be. Dave -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads