The powerboard is part of a gardening project I've been working on that uses low power systems and integrates with a solar panel and battery backup. The intent was to use with with something like the msp430 series of chips and even to integrate with the MSP430 Launchpad. The board was designed to fit in a altoids smalls container and be somewhat self contained. This is just experimental so it's use and final outcome is yet to be seen. Components. The components are similar to the sparkfun designed lipo battery charger and in a way that helped in the initial thought....though looking at the docs, it is self explanatory as to how you would come up with the design. This also uses a 3.3v regulator to power the device that you would be connecting to. It has the standard set of caps and resistors as required, as well as a LED charge indicator. You can connect it to a usb port, or to a solar panel for charging/running your proc. Since this is designed for a low power setup, you won't be running bots from it, just some small sensors and a low power transmitter (something like the rfm12b).
Current status is in test.
- Traces all checked out.
- USB port functions correctly(only using power leads)
- Vreg working as expected through battery and usb port
- Charge circuit still undergoing testing.
- Solar charging still needs to be tested.
The next iteration is a bit larger and will have an onboard processor for monitoring voltage levels of both the battery and the solar panel.