Hunting Solar no Sensor

Place at least 2, better more, solar panels oriented the same way. link them to the IC (one for each pin) the program check which pin is attached, and then detect the amount of light on the panel and the orientation. each "tick", the best solar panel is promoted and the other will be aligned "around" the same orientation, eventually pointing them to the right direction. it is not the optimal, but close enough. NO sensor needed, not batch writers or anything else, so you save a bit of energy and materials