Re: PCB designer? Weight issues.
toggle quoted message. . .
D'oh. Hit Send a bit too early.
Anyway... I could go from 9 to 4 (maybe 3 or 2) solar cells with a SPV1040 step-up converter / charge controller - http://www.st.com/en/power-management/spv1040.html - (or similar) to charge the super capacitor to 5 volts. It would take a bit longer to charge it, but it should maintain the charge long enough for the regular transmissions. This would also need a custom PCB (at least I can't find an existing charger breakout board that is in the 0-2 gram weight range).
If I could pull off both of these adjustments, that should put my payload well below 15 grams which would be optimal for a higher altitude float.
On Mon, Jun 19, 2017 at 4:06 PM, Jared Smith <jared@...> wrote: