I finally finished the PVC-based enclosure and found a way to mount it on my weird balcony railing. The mounting uses pipe clamps to attach it to some wood beams. I found a wooden pallet by the trash and took one of the beams, and cannibalized my old wooden enclosure. For a vertical-barred railing you could use two horizontal beams instead of one vertical one.

For now I'm putting seed on the tray to get birds used to it again while I finish up other things.

• The curved arm on the left side is to hold a camera.
• The hole above the dispensing cup is for the PIR.

Here's a brief look inside.

Peanut container (now loads from top!)

Vibration dispenser:

Dispensing funnel (top part of 1.5L PET bottle)

Deposit pathway

Deposit collector (bottom part of 1.5L PET bottle)

Now to resume putting the electronics on a solderable proto-board and fire it up again.