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Doug has also sent some useful links so I will take a look see.
It looks like it will fit the bill well for what I need.
On 11/12/2019 09:54, David Redman
Look at the K3NG rotator controller
Lots of encoder options
I use AEAT 6012 12 bit absolute encoders with
homebrew shaft mounts but other options are available
Az drive is homebrew , El drive heavy duty
Both encoders mounted on the rotating axis.
This is with an Arduino Mega 2560 and tracks my
3m dish to 0.1 degree positioning.
Park and stop limits fully define in software
I am not a software person and this was my first
venture into Arduino but I got their with help from Doug G4DZU
If anybody wants further info then please
contact me directly.
I agree the
mech end of it should be fairly straightforward, its
rebuilding the controller thats the more involved task, as I'm
means a software person. If I can find a suitable app
available that would help a lot - it needs 0.1 degree
display, software settable end stops and offset, motor speed
start-stop, and RS232 or USB interfacing for PC control.
On 11/12/2019 00:44, Chris Bartram G4DGU wrote:
> Hello John ('XDY, this time!)
> Fitting a shaft encoder into a '2051 shouldn't be a big
> played with magnetic encoders while (too slowly ...)
developing a new
> EME dish mount but I'm certain there would be no problem
> with that rotator, providing the end-float problem was
> I'm very happy - so far! - with the OE9PMJ az-el
controller, but I'm
> sure that for a simple azimuth controller an Arduino
> would be pretty simple to implement.
> Chris G4DGU
>> I have been using a Prosistel 2051 for nearly 10
years now and its
>> proved its worth. It fitted the existing Altron head
unit with no
>> problem. Like others I'm on about my third indicator
pot and am
>> considering changing to an absolute encoder and
>> controller to suit, but that's not a simple task. I
>> do now make a version with a shaft encoder with 0.1
>> resolution. The PstRotatorAz software package from
YO3DMU works well