http://arduino.org/forum/topic/project-help.htm project help Fri, 9 Jul 2010 13:15:48 GMT http://arduino.org/forum/topic/project-help.htm hi I am working on a project that I want to heat up something lets say a nail with an arduino I only want to make the nail about 4-8 degrees hotter how would I do that? also If I wanted to scale up the project lets say a grid of 6x6 how would I do that? Fri, 9 Jul 2010 13:15:48 GMT http://arduino.org/forum/topic/project-help.htm#13 http://arduino.org/forum/topic/project-help.htm It depends on how tightly you need that temperature controlled, and whether it's 4-8 degrees above ambient temp (regardless of what ambient is) or if it's a specific temperature you're seeking.   Specific temp will require a feedback lo Fri, 9 Jul 2010 13:15:48 GMT http://arduino.org/forum/topic/project-help.htm#14