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71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
import math
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import serial
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import RPi.GPIO as gpio
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import time
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ser = serial.Serial('/dev/ttyUSB0', 115200)
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gpio.setmode(gpio.BCM)
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gpio.setup(13, gpio.OUT)
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pwm = gpio.PWM(13, 100)
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pwm.start(13)
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verbose = True
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print("[ INFO ] Initializing Grbl...")
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ser.write(b'\r\n\r\n')
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time.sleep(2)
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ser.write(b'$RST=#\n')
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time.sleep(1)
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ser.flushInput()
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print("[ INFO ] Grbl is ready.")
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def goToBin(bin):
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print("[ INFO ] Delivering item to bin: " + str(bin))
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adjustedBin = math.floor(bin / 2)
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if adjustedBin > 11:
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print("[ INFO ] All bins full! Using overflow bin.")
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bin = 0;
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adjustedBin = 0;
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distance = adjustedBin * 18
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delay = 0.5 + 0.93 * adjustedBin
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command = 'G0 X-'
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command += str(distance)
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print("[ INFO ] Sending command to Grbl: " + command)
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command += '\n'
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ser.write(b'$X\n')
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time.sleep(0.25)
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ser.write(command.encode('utf-8'))
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# s.write("$C\n")
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while True:
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grbl_out = str(ser.readline().strip()) # Wait for grbl response with carriage return
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#print(grbl_out.find('error'))
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if int(grbl_out.find('error')) >= 0 :
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print("[ EXIT ] Grbl reported an error.")
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quit()
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elif int(grbl_out.find('ok')) >= 0 :
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if verbose: print('[ INFO ] Grbl message: ',grbl_out)
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break
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print("[ INFO ] Waiting for " + str(delay) + " seconds.")
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time.sleep(delay)
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if bin % 2 == 0: # tilt to left
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print("[ INFO ] Titling motor to left side.")
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pwm.ChangeDutyCycle(5)
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time.sleep(1)
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pwm.ChangeDutyCycle(14)
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else:
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print("[ INFO ] Titling motor to right side.")
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pwm.ChangeDutyCycle(25)
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time.sleep(1)
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pwm.ChangeDutyCycle(13)
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time.sleep(1)
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print("[ INFO ] Sending command to Grbl: G0 X0")
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ser.write(b'G0 X0\n')
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while True:
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grbl_out = str(ser.readline().strip()) # Wait for grbl response with carriage return
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if int(grbl_out.find('error')) >= 0 :
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print("[ EXIT ] Grbl reported an error.")
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quit()
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elif int(grbl_out.find('ok')) >= 0 :
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if verbose: print('[ INFO ] Grbl message: ',grbl_out)
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break
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print("[ INFO ] Waiting for " + str(delay) + " seconds.")
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time.sleep(delay) |