planktoscope/scripts/focus.py

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#!/usr/bin/env python
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#Focusing up for 345 micro steps :
#python3.7 path/to/file/focus.py 345 up
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from adafruit_motor import stepper
from adafruit_motorkit import MotorKit
from time import sleep
import sys
nb_step = int(sys.argv[1])
orientation = str(sys.argv[2])
kit = MotorKit()
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stage = kit.stepper2
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stage.release()
def focus(steps,orientation):
#0.25mm/step
#31um/microsteps
stage.release()
if orientation == 'up':
for i in range(steps):
stage.onestep(direction=stepper.FORWARD, style=stepper.MICROSTEP)
sleep(0.001)
if orientation == 'down':
for i in range(steps):
stage.onestep(direction=stepper.BACKWARD, style=stepper.MICROSTEP)
sleep(0.001)
stage.release()
focus(nb_step, orientation)