Designed to mount a time lapse camera for a 360 degree rotation over 1 hour. That's 1 degree rotation every 10 seconds.
Uses Adafruit LCD i2C board to display rotation information.
#!/usr/bin/env python
import time
from datetime import datetime
import RPi.GPIO as GPIO
from Adafruit_CharLCDPlate import Adafruit_CharLCDPlate
lcd = Adafruit_CharLCDPlate()
lcd.begin(16, 2)
lcd.clear()
lcd.backlight(lcd.ON)
# Use BCM GPIO references
# instead of physical pin numbers
GPIO.setmode(GPIO.BCM)
# Define GPIO signals to use
# Pins 18,22,24,26
# GPIO24,GPIO25,GPIO8,GPIO7
StepPins = [24,25,8,7]
# Set all pins as output
for pin in StepPins:
print "Setup pins"
GPIO.setup(pin,GPIO.OUT)
GPIO.output(pin, False)
# Define some settings
StepCounter = 0
WaitTime = 0.87890625
DegreesRun = 0
TotalSteps = 0
start_time = time.time()
ShouldBeTime=0
# Define simple sequence
StepCount1 = 4
Seq1 = []
Seq1 = range(0, StepCount1)
Seq1[0] = [1,0,0,0]
Seq1[1] = [0,1,0,0]
Seq1[2] = [0,0,1,0]
Seq1[3] = [0,0,0,1]
# Define advanced sequence
# as shown in manufacturers datasheet
StepCount2 = 8
Seq2 = []
Seq2 = range(0, StepCount2)
Seq2[0] = [1,0,0,0]
Seq2[1] = [1,1,0,0]
Seq2[2] = [0,1,0,0]
Seq2[3] = [0,1,1,0]
Seq2[4] = [0,0,1,0]
Seq2[5] = [0,0,1,1]
Seq2[6] = [0,0,0,1]
Seq2[7] = [1,0,0,1]
# Choose a sequence to use
Seq = Seq2
StepCount = StepCount2
# Start main loop
while StepCounter < 4096:
for pin in range(0, 4):
xpin = StepPins[pin]
if Seq[StepCounter][pin]!=0:
#print " Step %i Enable %i - Pin %s" %(StepCounter,xpin, x)
GPIO.output(xpin, True)
else:
GPIO.output(xpin, False)
StepCounter += 1
# If we reach the end of the sequence
# start again
if (StepCounter==StepCount):
StepCounter = 0
if (StepCounter < 0):
StepCounter = StepCount
# Wait before moving on
time.sleep(WaitTime)
DegreesRun += 0.087890625
TotalSteps += 1
RuningTime = time.time() - start_time
ShouldBeTime += WaitTime
y=time.strftime('%H:%M:%S', time.gmtime(RuningTime))
z=time.strftime('%H:%M:%S', time.gmtime(ShouldBeTime))
lcd.clear()
lcd.message(str(y) + " S=" + str(TotalSteps) + "\n")
lcd.message(str(z) + " DR=" + str(round(DegreesRun,1)))
| DC 5V Stepper Motor 28BYJ 48 + ULN2003 Driver Test Module Board fit for Arduino | |
 |
$9.99 End Date: Wednesday May-22-2019 2:36:59 PDT Buy It Now for only: $9.99 |
| 3 6 9x DC5V Stepper Motor 28BYJ 48 +ULN2003 Driver Test Module Board for Arduino | |
 |
$10.98 End Date: Thursday May-16-2019 0:31:56 PDT Buy It Now for only: $10.98 |
| 3 6 9 DC5V Stepper Motor 28BYJ 48 + ULN2003 Driver Test Module Board fit Arduino | |
 |
$9.39 End Date: Thursday May-16-2019 0:52:59 PDT Buy It Now for only: $9.39 |
| 5V 4 Phase Geared Stepper Motor with ULN2003 Driver Board 28BYJ 48 For Arduino | |
 |
$9.99 End Date: Wednesday May-22-2019 2:40:59 PDT Buy It Now for only: $9.99 |
| 28BYJ 48 L298 ULN2003 Drive Valve Stepper Motor DC 5 12V Step Motor | |
 |
$1.53 End Date: Saturday May-18-2019 10:10:57 PDT Buy It Now for only: $1.53 |
| 3 6 9 Sets 5V Stepper Motor 28BYJ 48 With Drive Test Module Board ULN2003 5 Line | |
 |
$9.29 End Date: Thursday May-16-2019 0:59:31 PDT Buy It Now for only: $9.29 |
| DC 5V Stepper Motor 28BYJ 48 + ULN2003 Driver Test Module Board for Arduino | |
 |
$3.95 End Date: Wednesday May-15-2019 13:32:31 PDT Buy It Now for only: $3.95 |
| ULN2003 28BYJ 48 5V Step Motor Gear Stepper Motor 4 Phase Step Motor for arduino | |
 |
$0.99 End Date: Tuesday May-21-2019 1:05:56 PDT Buy It Now for only: $0.99 |
| 28BYJ 48 2003 Stepper Motor Driver Module for Arduino+DC 5V Stepper Motor Kit | |
 |
$2.30 End Date: Monday Apr-29-2019 7:24:27 PDT Buy It Now for only: $2.30 |
| 28BYJ 48 2003 Stepper Motor Driver Module for Arduino+DC 5V Stepper Motor New | |
 |
$2.30 End Date: Saturday May-4-2019 11:45:04 PDT Buy It Now for only: $2.30 |