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Dr Jim Gillies posted an update 6 years ago
Some pictures of my modifications.
Great mod, i thinking about changing all servos for stepper motors but not sure about control, thru myrobotlab
Interesting. Curious if those stepper motors have the torque needed. Also they are quite heavy. Does it make sense to use them?
so far so good
You could always make your own stepper driver win an Arduino Nano that is controlled with a PWM signal and add a pot for position feed back