Wednesday, October 04, 2006
My carpentry could use some work, but there it is. Now comes the bit where I actually have to make it move... the upcoming weekend will hopefully show some progress.
You're definitely in uncharted territory here, send us more postcards :)
My plan is what plaas said. Six totally closed syringe-to-syringe arrangements. Unless something leaks, there'll be no slip. Some sort of pump with valves, on the other hand, would accumulate error over time -- literally.
I had planned to use stepper motors, no pseudo. Is a pseudostepper that device hashed out a few weeks ago, a DC motor controlled with an optical encoder?
They sell neoprene pressure hose for car full injection systems, cheap and incredibly tough. Might be a good candidate.
Aha. It seems so simple now. Lol, I was thinking all about pumps and valves and lots of complicated nasty stuff. That's both easy to build, and a nice trig review for the programmers.
It uses a magnetic encoder.
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