Feeders are designed to supply tiles to mosaic robot.
Typically, a feeder will transfer a queue of tiles to a fixed position (Pick Position). Mosaic robot will pick up tiles there.

There are several types of feeders.

Carrier Tray (Pallet),
Carrier Tape,
Vibriation Disc,
Transfer Belt,
Gravity Slot,
Vibriation Gravity Slot,
Revolver,
Tray Stack.
and other types

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Carrier Tray and Carrier Tape are recommded. here are videos showing them.

Feeding by carrier tape and tape feeder.

Reloading a carrier tape.

Feeding by tile tray (plastic pallet)

Reloading a tile tray.