Signals
- Three aspect semaphore signals will be used to 'control' movement between the 16 control blocks. Each control run will start and end in the "staging yard". Movement in the staging yard will be controlled by dwarf (short tri-color LED) signals.
- Based on the exit paths from each block, signals required:
- 28 26 double headed semaphores (there is not room for 2 signals),
- 4 single headed semaphores and
- 4 dwarf signal lights, one for each parking space in the staging yard.
- The aspect of each signal is controlled by the Raspberry Pi (3).
- Which aspect will be displayed is determined by the laptop (4).
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Tomar Industries Double Headed Semaphore # TMR842 |
Tomar Industries Single Headed Semaphore # TMR854 |
Tomar Industries Single Headed Semaphore # TMR853 |
Tomar Industries, Dwarf signal light, # TMR850, for the "Parking Lot"