This breakout board uses the LTC3588 Piezoelectric Energy Harvester from Linear Technologies. This board can be used not only for harvesting piezoelectric energy, but solar energy as well. There is a bridge rectified input for piezo elements (PZ1 and PZ2) and a direct input (VIN) for DC sources. Both are clamped to 20V. In addition, the board can simply be used as a standalone nanopower buck regulator. Project description, more information and ordering can be found at https://www.sparkfun.com/products/9946 LTC3588 Product Page: http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1799,P90393