Sorry, I've been really busy and it took me a while to get a chance to
pull up the docs on Google for review.
My suggestions:
* Twist the power lines going to the stepper motors. The stepper
drivers are basically small switching power supplies and they spew EMI
like nobody's business. I
Do the videos show "before" or "after" the noise fix was attempted? They
kind of look like "before" photos. I don't see any twisted and
shielded cables and I do see signal and power cables running in parallel
with little separation.
If power cables are tightly twisted, maybe 4 times per inch
Hi All,
We are continuing to experience issues that we believe are relating to
electrical noise on our BCNC. We realize that our machine is slightly
unorthodox, so we have a folder link with wiring diagrams and assembly
videos to help you help us. We are in the process of testing the machine.
Hi,
You should not make a loop of wire for the ground (gnd from switch to
switch to switch is not good).
You should have one wire for the switch input, and one wire for the
signal ground in your switch cabling.
All of the grounds from the various switches should meet at one point on
the
Could you describe the wiring of these switches on your machine?
I am wondering if you have two wires per switch going up to the logic
board, or only one, with ground sharing.
On 2020-07-21 19:39, Mason Millner wrote:
We are using momentary hinge limit switches
Hey,
You can also try A ferrite core cable ring noise filters to eliminate the
effects for the electrical noise.
https://www.amazon.com/dp/B078XKHLKG/ref=cm_sw_r_cp_apa_i_bRdgFbPM5PS74
Here's a link to what these are like.
Cheers
On Tue, 21 Jul, 2020, 8:54 AM Mason Millner, wrote:
> Hi All,
Hi,
The limit switch wiring may be picking up electrical noise.
You can try adding a bypass capacitor from the input to GND or
additionally add a resistor in the path right before entry to the input.
https://hackaday.com/2015/12/09/embed-with-elliot-debounce-your-noisy-buttons-part-i/
You didnt mention what type of limit switches you're using or how your
spindle works. The Y axis itself shouldn't be under any special stress
while cutting but the spindle generally takes a hard hit as soon as a tool
enters the cut. Is the spindle motor powered by the same power supply your
Hi All,
We are developing a 4-axis CNC to mill bamboo poles and are currently
running tests in just three axis (x, y, z). We can dry-run g-code files
successfully, however we receive limit switch errors (primarily on joint 1)
when we begin cutting material. We suspect that the error is
