I'm almost ready with Rev B - I've changed enough things now that I consider it another revision of the PCB. There have been some component value tweaks as well, but below are the additional functionalities I've added.

New Stuff

• Separate monitoring and control headers
  • Monitor pins are normally high and go low when the related item is triggered
  • Control pins can supply current to relevant transistors to trigger related items
• Daytimer 
  • Adjustable phototransistor-based sensor that disables timed dispense when it gets dark
  • Reduces chance of attracting vermin at night
• Empty Hopper Sensor
  • IR LED and phototransistor detects when the peanut level gets low
  • only operates when the PIR is triggered to save power
• Removed DPDT switch screw header, replaced with a pin header/jumper combination for an optional power switch
  • Moved timer power to a separate jumper closer to the timer block 
• Added a standard type A USB for power, and the footprint also accomodates a stacked jack so you could power another USB device (SBC, uC, etc.) even if your battery only has one power output.
  • You only need to add the power jack(s) that you will use - no need to populate all of them

I also cleaned up the schematic:

And drew lines around the modules on the main PCB.

I am still doing a little tweaking and determining the best way to mount everything in the new enclosure, but I hope place an order for this in a week or so.

The latest changes are on Github - link on the main project page.