I have a new project, a simple / small CNC platform, based on the following: 1- Hardware: 1.1- three NEMA17 stepper motors. 1.2- three A4988 Stepper drivers. 1.3- an Arduino UNO board Rev.3. 1.4- a CNC arduino shield V3 1.5- A 24V 10Amp Power supply. 2- Software: 2.1- GRBL 0.9j. 2.2- Univer…

Swap motors, swap drivers, post GRBL config.

Shahyn: All steppers are working perfectly when installed at the X or Z ports... All drivers are working perfectly when installed at the X or Z ports... The PIN mapping is correct (physically at the shield, and by the GRBL mapping)... zwieblum: Swap motors, swap drivers, post GRBL config.

Most of us use GRBL 1.1. Use a multimeter to check the cables for the errant axis. And to check you are getting voltage to the driver. We will presume you already set the operating current correctly ? We will also presume you use heatsinks on the drivers and that the heatsinks are not shorting a…

GRBL 1.1 shows the same problem, I am setting the current to 1Amp for all drivers, The multimeter reads all connections as designed, for Y axes: pins 3&6 are OK, NO current output from the driver at this port (Y) I didn't install heat sinks yet (still testing) The shield has NO shorts or dry joi…

Driver has more than 2 pins. Are the all other pins connected to where they should be? e.g. is enable?

Arduino UNO + V3 CNC shield & A4988 drivers

Other Hardware Motors, Mechanics, Power and CNC

Ballscrewbob August 23, 2020, 1:00pm 6

And we would still like to see the grbl config to ease our own minds about any settings.
Yep crystal ball fully occupied guessing what the wife will do next

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Arduino UNO + V3 CNC shield & A4988 drivers

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