On 6/6/25 15:05, Chris Albertson wrote:
You can detect belt slipage by using two rotary encoders, one on each pulley.
I’ve done this in robotics in drive reduction systems we put one encoder on the
motor, and then, after a 9:1 gear reduction, put another encoder on the output
shaft. Not using this to detect slipping but rather to account for play in
the gears.
Encoders are now dirt cheap. You can get AS5600 mounted on a breakout board,
four boards for $6 on Aliexpress.
And they are hall effect Chris, using internal hardware A/D convertors
to generate the signals. Too slow by orders of magnitude to reliably
work at the rpms a planer uses, we can't even use them on 3d printers.
Given enough time they can be more accurate than optical stuff, but are
worthless for even slow moving stuff.
On Jun 6, 2025, at 11:50 AM, Dave Engvall <dengv...@charter.net> wrote:
I apologize in advance for being off topic but need ideas (cheap and easy) for
shutdown of a machine (Jet 25” planner) when overloaded, eg the drive belts
are making high pitched sounds. My thought are: tach/generator on drive shaft
and slave shaft. Integrate the voltage on each and trip when the integral hits
a certain difference.
I’m open to other approaches. : suggestions ?
Machine is not mine but part of a makerspace with both good and clueless users.
Thanks !
Dave
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Cheers, Gene Heskett, CET.
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