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Post by mhayes on Apr 24, 2020 22:29:50 GMT
I tried some help with zyltech engineering since that’s where I bought the cnc shield. No good news yet. I’ll post if I get it working for sure
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Post by mhayes on Apr 26, 2020 16:03:36 GMT
Received a new CNC shield from Zyltech, same issues. I'm no closer to being fixed than when I started.
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Post by Bruce on Apr 26, 2020 16:39:13 GMT
So you have now replaced the Arduino board, CNC Shield board, and one stepper driver board? You might as well get all new stepper drivers and eliminate that part as well. Don't forget to set the 0.65vdc on each stepper driver.
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Post by mhayes on Apr 27, 2020 0:39:37 GMT
So I am going to order new drivers. But shouldn't the driver I replaced hold torque? Because currently it does not.
Silly question but is there any change the jumpers aren't making good connection? I mean they feel tight but I'm grasping at straws at this point.
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Post by Bruce on Apr 27, 2020 1:22:49 GMT
The jumpers set the Micro-stepping resolution. The voltage setting of the driver sets the current limit (torque) of the motor. If it is set too low there won't be enough torque on the motor. If too high it can burn out the motor coil. Make sure it is set at the 0.65vdc as close as possible.
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Post by mhayes on Apr 27, 2020 2:08:10 GMT
I’ve got them set at 0.65V. Maybe the drivers are bad? I’ll get those replaced and see if it fixes it.
I plugged a small led light into the motors and when twisted it lit up. I don’t know if there’s any other way to confirm the motor is good.
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Post by mhayes on May 2, 2020 2:47:51 GMT
I’ve got my new drivers. I have 0.65V to all drivers. It now moves on the x and z axis. Y axis won’t move but motors hold torque.
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Post by Bruce on May 6, 2020 15:53:45 GMT
Make sure you have the Y axis cloned with the 4th Axis, check the jumper settings on the CNC Shield.
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Post by mhayes on May 6, 2020 22:23:55 GMT
Yeah that’s all correct.
I’m having serious issues. I took the z axis driver and moved it to the x axis and it won’t drive the x motor. I put it back on the z and now it won’t drive the z. This is with all new parts
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Post by Bruce on May 7, 2020 3:20:22 GMT
If the motors engage and have holding torque the stepper drivers are good. I'm not sure why you aren't getting jog control. Pololu DRV8825 Stepper Motor Driver webpage www.pololu.com/product/2133Please post your machine GRBL settings Type $$ in the console window and copy/paste them here.
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Post by mhayes on May 7, 2020 22:38:25 GMT
$0 = 10 (Step pulse time, microseconds) $1 = 255 (Step idle delay, milliseconds) $2 = 0 (Step pulse invert, mask) $3 = 0 (Step direction invert, mask) $4 = 0 (Invert step enable pin, boolean) $5 = 0 (Invert limit pins, boolean) $6 = 0 (Invert probe pin, boolean) $10 = 1 (Status report options, mask) $11 = 0.010 (Junction deviation, millimeters) $12 = 0.002 (Arc tolerance, millimeters) $13 = 0 (Report in inches, boolean) $20 = 0 (Soft limits enable, boolean) $21 = 0 (Hard limits enable, boolean) $22 = 1 (Homing cycle enable, boolean) $23 = 0 (Homing direction invert, mask) $24 = 35.000 (Homing locate feed rate, mm/min) $25 = 1200.000 (Homing search seek rate, mm/min) $26 = 94 (Homing switch debounce delay, milliseconds) $27 = 4.000 (Homing switch pull-off distance, millimeters) $30 = 12000 (Maximum spindle speed, RPM) $31 = 5000 (Minimum spindle speed, RPM) $32 = 0 (Laser-mode enable, boolean) $100 = 200.000 (X-axis travel resolution, step/mm) $101 = 200.000 (Y-axis travel resolution, step/mm) $102 = 200.000 (Z-axis travel resolution, step/mm) $110 = 3500.000 (X-axis maximum rate, mm/min) $111 = 4400.000 (Y-axis maximum rate, mm/min) $112 = 3000.000 (Z-axis maximum rate, mm/min) $120 = 240.000 (X-axis acceleration, mm/sec^2) $121 = 240.000 (Y-axis acceleration, mm/sec^2) $122 = 240.000 (Z-axis acceleration, mm/sec^2) $130 = 432.000 (X-axis maximum travel, millimeters) $131 = 432.000 (Y-axis maximum travel, millimeters) $132 = 95.000 (Z-axis maximum travel, millimeters)
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Post by Bruce on May 10, 2020 0:39:30 GMT
These setting look good. I'm not sure what to tell you at this point.
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Post by mhayes on May 10, 2020 0:55:34 GMT
I appreciate you trying to help. I've got everyone stumped at this point. I'm going to try and reflash the Arduino and see if that helps.
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