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Servo Motor is not functioning
How to flush output of print function?Servo/audio synchronization in animatronics on RPi. Considering FFT solutionCan't control any servo with my RaspberryPi 2RF motor/servo controlTCP connection to control servo motorcontrol servo motor speed by raspberry piPython: Passing a class member function to another class's callbackInconsistency Issues With Stepper MotorTrying to find a good way to control servos at different speeds using johnny-five.ioControlling the speed of 2 Servo motors with the Raspberry Pi
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I have a servo motor, specifically a SG90, connected to an external power source and it is not supplying power.
The power source consists of 3 1.5v AA batteries taped together end to end.
I have tried switching the positive and negative ends and using other batteries, nothing seems to work.
Here is my code in case that is the issue
import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BOARD)
GPIO.setup(21,GPIO.OUT)
print("setup complete")
pwm=GPIO.PWM(21,50)
pwm.start(5)
sleep(2)
pwm.ChangeDutyCycle(3)
sleep(3)
GPIO.cleanup()
I expect the motor to be powered and to move.
Thanks In Advance
python-3.x raspberry-pi electronics
asked Mar 23 at 21:11
TylerTyler
41
add a comment |
I have a servo motor, specifically a SG90, connected to an external power source and it is not supplying power.
The power source consists of 3 1.5v AA batteries taped together end to end.
I have tried switching the positive and negative ends and using other batteries, nothing seems to work.
Here is my code in case that is the issue
import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BOARD)
GPIO.setup(21,GPIO.OUT)
print("setup complete")
pwm=GPIO.PWM(21,50)
pwm.start(5)
sleep(2)
pwm.ChangeDutyCycle(3)
sleep(3)
GPIO.cleanup()
I expect the motor to be powered and to move.
Thanks In Advance
python-3.x raspberry-pi electronics
asked Mar 23 at 21:11
TylerTyler
41
add a comment |
I have a servo motor, specifically a SG90, connected to an external power source and it is not supplying power.
The power source consists of 3 1.5v AA batteries taped together end to end.
I have tried switching the positive and negative ends and using other batteries, nothing seems to work.
Here is my code in case that is the issue
import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BOARD)
GPIO.setup(21,GPIO.OUT)
print("setup complete")
pwm=GPIO.PWM(21,50)
pwm.start(5)
sleep(2)
pwm.ChangeDutyCycle(3)
sleep(3)
GPIO.cleanup()
I expect the motor to be powered and to move.
Thanks In Advance
python-3.x raspberry-pi electronics
asked Mar 23 at 21:11
TylerTyler
41
I have a servo motor, specifically a SG90, connected to an external power source and it is not supplying power.
The power source consists of 3 1.5v AA batteries taped together end to end.
I have tried switching the positive and negative ends and using other batteries, nothing seems to work.
Here is my code in case that is the issue
import RPi.GPIO as GPIO
from time import sleep
GPIO.setmode(GPIO.BOARD)
GPIO.setup(21,GPIO.OUT)
print("setup complete")
pwm=GPIO.PWM(21,50)
pwm.start(5)
sleep(2)
pwm.ChangeDutyCycle(3)
sleep(3)
GPIO.cleanup()
I expect the motor to be powered and to move.
Thanks In Advance
python-3.x raspberry-pi electronics
python-3.x raspberry-pi electronics
asked Mar 23 at 21:11
TylerTyler
41
asked Mar 23 at 21:11
TylerTyler
41
asked Mar 23 at 21:11
TylerTyler
41
asked Mar 23 at 21:11
TylerTyler
41
asked Mar 23 at 21:11
TylerTyler
41
41
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Are you using the correct pinouts? For PWM it looks like you need either PWM0 or PWM1 which is pin combos 12/32 & 33/35.
All GPIOs are not PWM capable.
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
|
show 1 more comment
Make sure you have sufficient battery voltage.
Check your wiring.
Make sure Raspi and servo share GND.
Make sure you're using a PWM pin. On Raspi 3 pin 12 (GPIO18) should work fine.
answered Mar 25 at 22:55
PigletPiglet
8,94421123
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Are you using the correct pinouts? For PWM it looks like you need either PWM0 or PWM1 which is pin combos 12/32 & 33/35.
All GPIOs are not PWM capable.
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
|
show 1 more comment
Are you using the correct pinouts? For PWM it looks like you need either PWM0 or PWM1 which is pin combos 12/32 & 33/35.
All GPIOs are not PWM capable.
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
|
show 1 more comment
Are you using the correct pinouts? For PWM it looks like you need either PWM0 or PWM1 which is pin combos 12/32 & 33/35.
All GPIOs are not PWM capable.
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
Are you using the correct pinouts? For PWM it looks like you need either PWM0 or PWM1 which is pin combos 12/32 & 33/35.
All GPIOs are not PWM capable.
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
answered Mar 23 at 21:17
SlowlyButSurelySlowlyButSurely
508
508
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
|
show 1 more comment
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Can you give me an example of what I should do?
– Tyler
Mar 23 at 21:24
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
Checkout this example: rpi.science.uoit.ca/lab/servo
– SlowlyButSurely
Mar 23 at 21:28
2
2
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
For a well-rounded answer, I'd suggest adding a code snip related to the OPs with the fixes you're recommending within the answer itself. Note also, that unless absolutely necessary, put everything pertinent to your answer as text (or code etc) in the answer as opposed to links. Links die eventually, oftentimes rendering answers/comments useless.
– stevieb
Mar 23 at 21:52
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
Thanks. You're right, I was just in a rush because it's nice outside and I wanted to take the dog for a walk :)
– SlowlyButSurely
Mar 23 at 22:08
1
1
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
So to answer the original question, I think you (maybe) just mixed the order of numbers for your pin assignment (21 vs 12). Go back through the code and replace 21 with 12: Here--->GPIO.setup(21,GPIO.OUT) print("setup complete") and Here ---> pwm=GPIO.PWM(21,50)
– SlowlyButSurely
Mar 23 at 22:13
|
show 1 more comment
Make sure you have sufficient battery voltage.
Check your wiring.
Make sure Raspi and servo share GND.
Make sure you're using a PWM pin. On Raspi 3 pin 12 (GPIO18) should work fine.
answered Mar 25 at 22:55
PigletPiglet
8,94421123
add a comment |
Make sure you have sufficient battery voltage.
Check your wiring.
Make sure Raspi and servo share GND.
Make sure you're using a PWM pin. On Raspi 3 pin 12 (GPIO18) should work fine.
answered Mar 25 at 22:55
PigletPiglet
8,94421123
add a comment |
Make sure you have sufficient battery voltage.
Check your wiring.
Make sure Raspi and servo share GND.
Make sure you're using a PWM pin. On Raspi 3 pin 12 (GPIO18) should work fine.
answered Mar 25 at 22:55
PigletPiglet
8,94421123
Make sure you have sufficient battery voltage.
Check your wiring.
Make sure Raspi and servo share GND.
Make sure you're using a PWM pin. On Raspi 3 pin 12 (GPIO18) should work fine.
answered Mar 25 at 22:55
PigletPiglet
8,94421123
answered Mar 25 at 22:55
PigletPiglet
8,94421123
answered Mar 25 at 22:55
PigletPiglet
8,94421123
answered Mar 25 at 22:55
PigletPiglet
8,94421123
8,94421123
add a comment |
add a comment |
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