CNC shield V4 Arduino Nano not working

Discussion about the arduino based g-code interpreter, grbl
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Joined: Mon Nov 18, 2013 8:17 pm

CNC shield V4 Arduino Nano not working

Post by alhaddar » Sun Jun 12, 2016 10:50 pm

On my CNC shield V4, the STEP and DIR was not corresponding between the pin layout from the Android Nano and the step driver board. After switching both pin the bor start to work

Now how are changed Pins by programming
I ask you my friends on the way, because I do not have any idea how to change

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Joined: Tue Mar 19, 2019 5:40 pm

Re: CNC shield V4 Arduino Nano not working

Post by AnnyMore » Wed Mar 20, 2019 6:18 pm

Hi...Are you sure you have the A4988 boards correctly oriented? In other words, if they were put in place flipped around, would the pins vs function match?
Given that these boards are custom things from China, they very well could be made wrong, or maybe the CNC software they are using with the board uses a different pin spec?

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