/challenges-projects/design-challenges/energy-harvesting/b/blog/posts/a-very-compact-guide-to-energy-harvesting---part-008Some Interesting Pictures Here are some pictures of the more interesting energy harvesting signals that I&#39;ve captured.en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/energy-harvesting/b/blog/posts/a-very-compact-guide-to-energy-harvesting---part-008Thu, 02 May 2013 19:58:50 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:140af14d-33d6-42ae-aee3-1683f3fcb9f7DAB1<p>Hi Monte,</p><p>&nbsp;</p><p>Can I assume that the cymbal and drum signals are from single impulse hits?</p><p>&nbsp;</p><p>&nbsp;&nbsp;&nbsp;&nbsp; Have you considered setting them up with either falling water or sand to drive the impulses?</p><p>&nbsp;</p><p>I am also assuming that the printer motors were just given a quick twist.</p><p>&nbsp;</p><p>&nbsp;&nbsp;&nbsp;&nbsp; Have you considered putting a air capture or motor driver to see how stable the output from the motors changes over various speeds?</p><p>&nbsp;&nbsp;&nbsp;&nbsp; Does the output current/power rise with higher speeds?</p><p>&nbsp;</p><p>I also assume that the ice block signal is from your thermocouple.</p><p>&nbsp;</p><p>&nbsp;&nbsp;&nbsp;&nbsp; Have you considered attaching a solar cell to the other side to see how much additional power you can extract from a solar illumination?</p><p>&nbsp;</p><p>Cool pictures.</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=15733&AppID=106&AppType=Weblog&ContentType=0" width="1" height="1">