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Topic: USB communication, charging, and Atmega8 series. (Read 1 time) previous topic - next topic

zer0gimmick

I am trying to build a circuit that I can communicate and charge a LiPoly battery over USB. I want to use the FT232RL chip because of its driver support and its FTDIChip-ID feature. I can use either 3.3v or 5v (my sensors come in both varieties). The LiPoly is a single cell battery.

I have looked for diagrams that show this circuit but have had no luck. I find ones that charge over USB and ones that power/communicate over USB. I know this is possible because my phone and mp3 player both do it.

I tried to take a stab at building the circuit myself. Ignore the labeling on the battery and the ferrite bead (I am new to eagle cad and picked the first available symbol)

http://i.imgur.com/5tSTV.png

Any help correcting my circuit or a link to one that does what I need would be helpful.

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