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Picaxe Stepper Motor

This is the AQA version closing after June 2019. Visit the the version for Eduqas instead .

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Stepper Motor Driver

This driver is suitable for small stepper motors with four separate coils. The H-Bridge driver is better for bipolar stepper motors.

PX Stepper CCT.gif

Code to Spin in Whole Steps

start:
    movw    0x01
    movwr   portb
    call    wait100ms
    call    wait100ms
    call    wait100ms

    movw    0x02
    movwr   portb
    call    wait100ms
    call    wait100ms
    call    wait100ms

    movw    0x04
    movwr   portb
    call    wait100ms
    call    wait100ms
    call    wait100ms

    movw    0x08
    movwr   portb
    call    wait100ms
    call    wait100ms
    call    wait100ms

    jmp     start

PX Stepper.jpg

Picaxe Stepper Motor

Stepper Motor Driver

Code to Spin in Whole Steps

TASK: Write Code to Spin in Half Steps

TASK: Write Code to Spin Anticlockwise

TASK: How fast can you spin the motor before it stalls?