Neptune 2 robot arm

hi anyone got any info on these robot arms built in uk

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j wrote:

If I recall correctly - The design for these arms originally appeared in Practical Electronics in the 70s.
They were driven by a 12V motor running a water filled hydraulic system with solenoid operated valves. The Rams (pistons) used a 'rolling' rubber membrane seal to eliminate leaks. Positional Feedback was by LDVT. I can't really recall what the control electronics were based on - but I do remember there being quite an involved analogue section around the LDVTs.....
Hope this helps,     Jon.
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