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  1. R

    3-Axis Stepper Controller

    Hi everyone, I was just wondering if it were possible to increase the output of the ucn5804b by using a low resistance pull up resistor to increase the ampage in order to run larger motors? At the moment what is the largest motor oz/in the chip can run? Thanks Ryan
  2. R

    3-Axis Stepper Controller

    Hi MP, SUCCESS!!! finally got the board working correctly, i found out that the wires from the stepper motor were round the wrong way, i am only running one stepper at the moment! Thanks for everyones help! Ryan
  3. R

    3-Axis Stepper Controller

    Thanks guys for the help but i am still having a problem, i am using the half step mode, the motor only works at a certain speed, it also has direction clockwise but counter clockwise just vibrates or  jumps counter clockwise. im using 12V 1A power supply unipolar stepper motor: 200 steps per...
  4. R

    3-Axis Stepper Controller

    Hi guys the s/w im using is TurboCNC & JalaCNC, i also tried changing the states i.e. one phase, step inhibit, half step etc, for some reason it doesnt like it, stalls or vibrates. p.s do you know if you hav 2 change the step to phase in TurboCNC? Ryan
  5. R

    3-Axis Stepper Controller

    Hi all, dont know if people still post to this but i need help. I have built the board, tested it and connected it, when in operation the motor is either 1 of 3 things: 1: Jumpy and just vibrates 2: Has direction but very slow and not much torque 3: stationary but with strong holding torque...
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