New machine has knackered control box :-( Need a new one

[ravihotwok]

https://www.youtube.com/watch?v=9Y78...ature=youtu.be

[Desertboy]

https://www.youtube.com/watch?v=9Y78...ature=youtu.be

I wonder if the stepper driver for the X axis is turned up too high, there's a pot to adjust the current to the driver on the board inside the metal box. When you're trying to only move the X it overloads the motor but when you use X&Y together the power supply can't supply enough current to over load the X.

If there is a pot you must be very careful when you adjust it if you use a metal screwdriver otherwise you can short something out but it's really very easy and nothing to be scared of.

Check this vid out for 3d printers but the principles are the same just bigger motors as you have an all in 1 board with built in steppers.

https://www.youtube.com/watch?v=bItYRMLGoVc

[ravihotwok]

dont think you can adjust mine?
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[routercnc]

Try turning the jog rate down (velocity) on the faulty axis

When you move in X it runs at full speed

When you move diagonally it will run at a lower X speed to maintain the same diagonal speed. Clearly this works ok so turning X speed down will do the same and it should then be ok

Obviously this is just to get you working. For some reason the driver or wiring is not happy with the pulse rate required for the X axis velocity you are tuned to.

Do you have an oscilloscope? You can check the pulses and see where the dropout is happening. If not check all terminals are tight and make a good connection .

Also that acceleration rate is very low. This is not related to your problem but that will get annoying when you are trying to get into position

Good video by the way that really helped

[Clive S]

This may or not help but following on from what has been noted try having a hairdryer set on cold to blow air over the driver chips to see if it is over heating.

[ravihotwok]

tried the jog speed but no difference
just got the hair dryer out lol

[ravihotwok]

Hair dryer idea also not success :-(

[Boyan Silyavski]

It could be anything from the crappy plugs at the back, broken signal cable to faulty driver.

Be patient inquisitive and buy yourself a multi meter to check continuity.

1. Open the box and ensure all connections are connected right. Especially DIR and STEP signals to the drive
2. Ensure all is soldered well and plugs especially
3. Swap cables and make sure that the cable is OK. Check motor and the cable to motor connection.
4. read particular motor driver documentation and see if some adjustment there is not wrong.

Anyway, if are persistent you will find the problem and demonstrate it to them. So no need of sending anything back.

There are not so many things that could go wrong, so just take your time. Its board, cable to drive, drive, cable to motor. Thats it. One of these is wrong.


And yes, buying Chinese boards and searching support from the original maker does not make sense. Buy a board from him and then seek help there :-)