This is the combination of two projects:
Helix Occupied Flasher and Quintet Optical Sensor and Timed Outputs.

See the Video about it here

Helix Occupied Flasher

See the prototype Video about it here
Download the V1.0 documentation here  (0.24 Mb)
Download the V1.2 documentation here  (0.25 Mb) Includes an
extra Optical Sensor and Timed Output circuit.

Quintet Optical Sensor and Timed Outputs

See the prototype Video about it here
Download the documentation here (7.8 Mb)