I’m adding support to the EasyDriver and high current NEMA motors. Currently I’m working on using the EasyDriver together with the NEMA17 with Planetary Gear. The motor has 0.35 deg step angle with a gearbox ratio of 5.18:1 that can give better focusing precision. It’s a little bit expensive as the motor alone is $41.00 at Amazon 5:1 Planetary Gearbox Nema 17 Stepper Motor 0.4A for DIY CNC Robot 3D Printer. The EasyDriver is $6.36 EasyDriver at Amazon.
I’m also 3D Printing another bracket to add more support since the weight and torque is greater than what I currently have. Anyway here’s the youtube video