The project describes the flood-gate for installation into the colony of naked mole rats or other small animals.

Flood-gate includes two doors with solenoid locks. There are four lines of IR beam interrupt detectors: one before every door and one after every door. Before the door, we have two beams perpendicular to each other and commutated with 'OR' logic. After the door, we have a single ray from up to bottom.

Beams are designed as four boards connected with wires located around the central tube: two beam receiver boards and, correspondingly, two beam transmitter boards.

Into the flood-gate-3d, we put 3D drafts of the general structure of the flood-gate.

2D drafts suitable for laser cut or CNC milling are located in flood-gate-2d.

The KICAD project for receiver and transmitter boards is in emitter-reciever.