I need an absolute rotary encoder to monitor the position of a 2 inch shaft.
- I have access to the end of the shaft
- Hunting for a starting position may be very difficult, as the machine is very heavy and can't be moved by hand - this may mean I need a absolute encoder.
- I would like to monitor the shaft position with a fairly high amount of precision - perhaps within 5° rotary position.
I am looking for a fairly inexpensive solution that can connect to an Arduino or LabJack micro-controller. There are several products on Mauser similar to this one:
These are all meant to be mounted on much smaller sized motors/shafts, however. There are several incremental rotary encoders for larger sized shafts (up to 5/8"), but I imagine finding the exact shaft position may be difficult with these incremental encoders. I don't know how practical it will be to use such a small sized product with a 2" shaft - I can have the end of the shaft cut down to a smaller size.
There is also a selection of more expensive products such as this one, which are absolute encoders:
Should I just find a way to mount the small-sized encoder on my big 2" shaft? I don't necessarily need a pass through encoder; the encoder can also be mounted on the end of the shaft. If necessary I will have to go for the expensive larger sized pass-through device.
have access to the end of [a 2 inch] shaftinvites to print a more elaborate version of rotary encoder on an adhesive label. \$\endgroup\$