This board implements the schematic shown on page 1 of the LTC3105 datasheet: http://cds.linear.com/docs/en/datasheet/3105fb.pdf See attached schematic. The header pins are positioned so as to plug easily into a 2.54mm pitch breadboard. The photovoltaic cell and battery would be attached externally using the header pins.
The LTC3105 is a step-up voltage converter with a low start-up voltage of 250mv. It includes Maximum Power Point Control (MPPC), which Linear Technologies advertises as being useful in solar applications.
Note: From what I've read, MPPC is less capable than full-blown MPPT. I haven't yet tried it, so I can't really say how effective it is or isn't. Anyone who has had experience with it, please post a comment. Perhaps in conjunction with a micro-controller, it may be possible to approximate MPPT by leveraging the chip's MPPC.
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