Awesome! The connection mechanic is really cool, I had a lot of fun playing with different configurations for my tank. My one quibble was that while drawing connections, moving over the battery didn't "undo" the drawing in the same way that moving backwards did otherwise.
P.S. I didn't think [?#!/%@] was hard enough, so I beat it with 2 tank speed, 2 jump, 1 frequency, 0 cannon speed, 0 cannon power :D