On Sat, Jun 4, 2011 at 6:10 AM, Michael Watterson wrote= : > I have to put any of my Solar charged things on a window sill or they > don't charge at all. Having put solar cells on a meter and viewed the output, I know exactly of what you speak. However, I have been reading a bit about energy harvesting via the piezoelectric effect and the new chips available to support it, and I believe this is far less power than a small solar cell under indoor lighting, so I am fairly certain that the power generated can be made useful. -p. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .