Dave ask m3e to post this on the Taig onwners forum.
I have posted some pictures of the Tachometer mounted on an older Sherline. You
can see it is quite a simple setup. We have Alan Rothenbush to thanks for
developing the code to program the micro controller and the circuit board layout
to fit the case that I wanted to use. His really cleaver design makes the tach
quite small and really easy to install. Simply place a piece of black electrical
tape or other non reflective materinal on the spindle pulley and mount the
sensor. I used double sided tape to hold the aluminum bracket sensor bracke in
place. That is more than adequate because there is no stress on it.
I also found that the top no load speed was higher than the data sheet
for the mill. It says 2800 RPM I found it to run at 3080RPM andd verified that
with two hand held optical tach.
One good bit of news is that the PCB will arrive on Thursday. The better news
is that the circuit boards are going to cost a lot less than
what I had estimated based on the prototype boards. I;ll pass the savings on. If
interested contact me off line at dmauch@... and I'll place you
on my list to be notified when I have all the parts in. I plan to offer it as a
kit (soldering required) or as an assembled and tested unit.

Dan

Could you give your complete address. I am interested in this and I'd like to get more information.

Rick

Rick ...his website is

http://www.camtronics-cnc.com/

Brian,

Thanks for the info.

Rick