I have my Lowrider just about finished, just waiting for pulley and screw drives.
I ordered the following kit from Amazon:
Longruner GRBL CNC Shield Expansion Board V3.0 +UNO R3 Board + A4988 Stepper Motor Driver with Heatsink for Arduino Kits (3D Printer kit)As you can see it comes with the A4988 stepper driver which I understand is only 1/16 seconds rather than the DRV8825 drivers which are 1/32 seconds.
Which firmware will I need in order to make these drivers work?
I should mention that I do have a set of DVR8825’s but they are too large to fit my Mega 2560 board. The pins fit, but the actual board is too large.