i am using a microcontroller Shopbot tools, to send step and direction to the gecko g 340.i have good speed and control but in one direction only. the step pin measures 3.3 volt with the multimeter. the direction pin measures 5.5v one direction and when attempting to reverse , the measurement
is 3.3v.is the voltage too high to create reversing, if so what remedy ,pull up, pull down resistor ?