I’m thinking about using these lipoly’s with the GPS datalogger; but can someone confirm whether I need to step them up (it looks like from the specs that the datalogger requires min 4v). Has only done this and can recommend a straightforward approach? Thanks!
I was initially happy with SFE’s data logger, but decided to add a bunch of features that were not supported. Check out my blog at: http://sdgpsdatalogger.blogspot.com/
Otherwise, you can run the SFE logger off a fully charged lipo. However you will not be getting the full life of the battery since the regulator will probably brown out at around 3.4-3.5 V.
To save you some trouble check out the link below: I just placed an order for these pcb’s that I designed that have built in stepup - stepdown converters, a protection circuit module and usb charger. I am intending to help those out who want to start using lipo’s safely for microcontroller apps. PM with your e-mail address and I will add you to my contact list to keep you posted on how things are going.
http://www.sparkfun.com/cgi-bin/phpbb/v … sc&start=0
CAUTION!!! Do not use lipo’s such that you discharge them below 2.5V, overcharge beyond 4.2V, puncture or expose the lipo to temperatures >140F.
5 Boards have arrived…check blog for details.