Control MakerBot movement using Python

README.md

MakerBot s3g Protocal

https://github.com/makerbot/s3g

Dependencies

pip install pyserial makerbot_driver

Troubleshooting

Must turn off MakerBot backgound service so serial port is available.

Menu > Services > Stop Background Service

makerbot.py

import makerbot_driver, serial, threading, time

port = '/dev/tty.usbmodem1411'
print('Connecting to serial port '+port)
r = makerbot_driver.s3g()
file = serial.Serial('/dev/tty.usbmodem1411', 115200, timeout=1)
r.writer = makerbot_driver.Writer.StreamWriter(file, threading.Condition())
print('Connected to MakerBot successfully!')

# queue_extended_point([X, Y, Z, A, B], rate, 0, 0)

# X from -10000 to +10000 (left to right)
# Y from  -5000 to  +5000 (front to rear)
# Z from      0 to -48000 (bottom to top, almost touch extruder)

xBegin = -10000
xEnd   = 10000
xStep  = 1000

yBegin = -5000
yEnd   = 5000
yStep  = 1000

zBegin = 0
zEnd   = -10000
zStep  = -1000

print('Go to initial position ...')
#r.queue_extended_point([xBegin, yBegin, zBegin, 0, 0], 400, 0, 0)
r.queue_extended_point([xBegin, yBegin, -48000, 0, 0], 400, 0, 0)
# Some time to go to initial position
time.sleep(10)

print('Start running test positions ...')
# Scanline method
for z in range(zBegin, zEnd+zStep, zStep): 
    for y in range(yBegin, yEnd+yStep, yStep): 
        for x in range(xBegin, xEnd+xStep, xStep): 
            print('('+str(x)+', '+str(y)+', '+str(z)+')')
            r.queue_extended_point([x, y, z, 0, 0], 400, 0, 0)
            if x == xBegin:
               # Move time: move from xEnd to xBegin
                time.sleep(10)
            else:
                # Move time: safe delay 1 second for 1000 steps
                time.sleep(1)

print('Go to initial position ...')
r.queue_extended_point([xBegin, 0, 0, 0, 0], 400, 0, 0)