Burgermeister- All of our solar panels have always had a blocking diode on them to prevent the discharge at night.
On the "Directional feeder", the "Pre" cycle is so that the throwng motor can get up to full speed before dropping food to it. This helps prevent so much feed from being right in front of the feeder. The "Post" cycle is to clear the blower chamber out so that there is no feed there to get wet and rot or to attract varmints (not that they need help)
