#Arduino stepper motor shield cnc how to#

So, you get XYZ or XYY from this shield.ĪnnoyTools also has spindle support. Use 24v for CNCs, and 12v for 3D printers and lasers.ĪnnoyTools supports three axes, but it also backs up a dual-axis. You can power this shield with 12v to 24v (although its diagram says 7-36V). Without a fan, I recommend you stay below 1.5 A per phase.Īlthough the A4988 can deliver up to 2 A/phase, you’ll burn through it in no time if you demand 2A from the stepper driver without proper heat dissipation. It comes with 3 A4988 drivers, but you can take them out and insert a DRV8825 with similar pin arrangements. There is no info on whether the spindle PWM pin can drive up to high speeds.ĪnnoyTools 4 is a CNC shield that also supports GRBL 1.1. It can drive your spindle up to 20000RPM with its PWM pin (although you should still check your spindle’s specs), and it supports 3 axes with six limit switches and an E-stop button. Its electronics for directly switching the spindle (spindle enable) are weak (only 24v at 10A), but its PWM is better. It only works on 24v, but this is because it has the necessary electronics to drive a spindle or laser. It has stepper motor drivers soldered on it, but for good reason: it has a fan turning on the stepper motor drivers. This allows you to draw more power from the stepper motor drivers.

#Arduino stepper motor shield cnc how to#

(If you have earlier versions of GRBL, we have explained how to make a GRBL controller or upgrade it in another article.) If you burn a stepper motor driver, you’ll need to replace the whole CNC shield.ĬNCTOPBAOS 4V is a good CNC shield because it has an in-built fan.