Re: Poor Man's Rotator Using a Stepper Motor?
As an alternative to a traditional direction indicator using some sort of positional feedback to indicate the pointing direction of a remote beam, consider mounting a cheap CCTV, or Web, or wireless camera in a weatherproof enclosure on top of the boom looking along it in the direction of fire. That way you can 'see' which way the beam is pointing.
This would not have been a viable option until recently but basic CCD cameras with various types of connectivity are now very cheap.
Of course if this is to be internally mounted then all it will see is the inside of your loft. The camera / associated electronics may also radiate unwanted interference within the band of interest.
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