Step 1, test all equipment
before install, please test all servo and motor, make sure it is working.
connect M3, M4 to your tank chassis, and install four servo on shield,
Note: if not work, please try to upload code again,
ps2 control 4dof robot arm with 2 motor video Results show
install the robot arm
please read the blog showing below:
SNARM acrylic parts install guide
install robot arm on tank chassis
use two long screw to make fast the robot arm on tank.