Hey guys, I'm new here, and need some help! I'm pretty wet behind the ears when it comes to building circuits, no prior education, but a decent understanding of electronics. I'm trying to build a single axis solar tracker. I've got 2 small solar panels that produce 1.2watts peak and current is about 10ma. I would like to trigger a normal 5 pin spdt 12volt relay coil tested at 85ohms. Would a transistor be able to do this? And if so, how would I go about figuring which transistor would have the optimum parameters? I realize these could be loaded questions, but any help I could get would be greatly appreciated! Thanks in advance