Board Lock and Motors Occasionally Reverse

[InPhase]

About one out of every three move commands I give the board results in a reversed direction. Sometimes it will move correctly and other times opposite for the same command. And this is on all three (4 w/ dual gantry) axes.

Other times, I can run a command, and when it is finished executing, the board will not take any new instructions without a reset. It just gives the “TinyG [OK]” response in the terminal.

0.96 firmware on a v8 board. The configs are all checked and triple checked. Guidance please.

[alden]

Can you tell me what axis is doing this and post your settings? Usually this means that one of the phases is not powered. Often this is wiring, sometimes the motor itself, and could indicate a fault int he board. (These boards have been tested pretty well and are new).

You can check this by moving the motor to another port, swapping things around, trying different motors on the faulty port, etc.

If it is a board fault it’s a DOA and we’ll replace the board.

[alden]

One other thing to note: We just discovered that if you set the motor timeout to zero – and the power management mode to 0 the axis will not move. It will only make some noise. We’ll fix this quickly.

[Author]

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