Control your 3020/3040/6040 or similar with GRBL, without modifying your control box. This version works with JP-382A stepper driver board commonly found in these CNC machines.
Details
DB25 Pinout:
Files
GRBL_to_JP-382A.pdf
Schematic
Adobe Portable Document Format -
76.26 kB -
07/22/2019 at 08:25
Does this even work? Your schematic doesn't have a crystal for the CH340G, and datasheet says its required. And I'm guessing you just use GRBL firmware?
question, where can I get the firmware for atmega?