The problem is: The TTL output that you mention is the result of the processing done by the DSP. This is definitely non-trivial. I've designed many similar systems, and I can tell you that it takes some very good engineers and programmers to make something like this work, and considerable $$$.
<font face="Verdana, Arial" size="2">Originally posted by Mcgyver:
...So assuming ball bearings are reasonably accurate and priced, a suitable non magnetic tube can be found, and whatever you are doing with the ttl output exists or is assumed, any thoughts on how to build one?
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