Re: sherline motor/speed control wiring IT WORKS!

Tauseef,

Nice to see you making such good progress.

Please keep in mind the term "Fail Safe". In this case it means, what
happens when something you didn't expect to happen...HAPPENS??

Like the computer connection being broken; Does it turn the spindle
ON or OFF??? Pretty important that you don't set yourself or someone
else up for injury.

Most TTL outputs (like the p-port ctrl lines CncPRO uses for M codes)
will "float" HI if left to do what comes naturally. But check out
what is happening with YOUR computer and YOUR driver board!
Then "fail" the setup to see what happens... Be careful not to blow
your drivers in the process!

Also, find out what happens when the CNC software is NOT loaded and
the computer is turned on with the machine and Driver board hooked up
and turned on. This will be simulating someone turning on the
computer, who doesn't realise there's a cnc machine instead of a
printer attached...

Also remember that a circuit can be completed by supplying a source
of voltage/current OR by supplying a ground...

Hope this helps.

Ballendo

--- In CAD_CAM_EDM_DRO@y..., "tauseef" <alieron@h...> wrote:
> Hey guys, more news! I got an LED to turn on and off using M03 and
> M05 command on CNCPro! Connect a wire on pin 1 (+) and then I used
> ground off of the camtronics board (this should work for others
too).
> Check the voltage output and see if it goes up and to basically 0
by
> pressing F5 (this turns on this I/O). On mine is a little under 5
> volts. Connect your device between the two wires and it will turn
on
> and off on command! Works so far! Tomorrow I will get a solid state
> relay and hook it up to the I1 and I2 on the sherline speed
> control....Well let you guys know if it works tomorrow!!! Can't
wait!
> tauseef