I'm also trying to use only my MacOS machine like you did, but I have some issues.
So here is what I've done so far.
I've installed the driver and so I've been able to find the device like thisls /dev/tty.w*
Then I've flashed the Arduino with the hex from here: http://forum.eleksmaker.com/topic/87/software-for-mac
By doing thisavrdude -carduino -b57600 -patmega328p -P/dev/tty.wchusbserial14310 -Uflash:w:ManaSE_v3.7.hex:i
Unfortunately I've noticed some error of verifications. I don't know if it means it didn't workavrdude: verifying ... avrdude: verification error, first mismatch at byte 0x7f00 0xff != 0x09 avrdude: verification error; content mismatch avrdude: safemode: Fuses OK (E:00, H:00, L:00) avrdude done. Thank you.
Then launch minicom in one terminalminicom -D /dev/tty.wchusbserial14310
Then send this g-code commands from another terminal# This one should select "Draw mode" echo "E2" >> /dev/tty.wchusbserial14310 # This one should select "servo mode" echo "A0" >> /dev/tty.wchusbserial14310 # Then I tried some simple command but nothing works echo "G1 X10 Y0" >> /dev/tty.wchusbserial14310
Could you help me understand what I'm doing wrong?
Thanks in advance