I was wondering if anyone could help me out with this? I am looking for the highest torque motor I can find that can be powered by an Arduino. I don't want constant power supplied, and only want it to turn one step (@ 5 degrees) every 5-10 minutes, having it only draw power when it needs to turn. Ideally the lower the power draw the better. Does anybody have any suggestions or ideas on the matter. It would be much appreciated!
Thank You
markb0410:
I was wondering if anyone could help me out with this? I am looking for the highest torque motor I can find that can be powered by an Arduino. I don't want constant power supplied, and only want it to turn one step (@ 5 degrees) every 5-10 minutes, having it only draw power when it needs to turn. Ideally the lower the power draw the better. Does anybody have any suggestions or ideas on the matter. It would be much appreciated!
Thank You
Researching the forum for stepper motors will show you the stepper motor draws about the same current when not stepping as when stepping. Otherwise it would just turn freely. When starting up, it may rotate a bit either direction. So, there is torque only when moving. There is resistance to turning when not stepping.
And you CANNOT power much of a stepper from Arduino pins. Decide what ACTUAL torque you need.
Paul
Do some reading here, there are several good articles on steppers and stepper motor drivers.
https://learn.adafruit.com/all-about-stepper-motors
markb0410:
I am looking for the highest torque motor I can find that can be powered by an Arduino.
NO stepper motor can be powered by an Arduino.
If you have a suitable stepper motor driver then there is no limit to the power of a motor that can be controlled by an Arduino
These links may help
Stepper Motor Basics
Simple Stepper Code
...R
Thanks for the response. I did mean using a driver. Sorry for the misinformation.
Paul,
Thank you for the info. I know stepper motors constantly draw power for holding in place, however, I was wondering if there was a way around this by only applying voltage to it every 10 minutes or so. I would have it attached to a gear and have a locking mechanism to hold the gear in place once the stepper motor had turned it. Honestly, I’m not sure if it’s possible to do this with a stepper motor, any ideas?
Thanks
markb0410:
Paul,
Thank you for the info. I know stepper motors constantly draw power for holding in place, however, I was wondering if there was a way around this by only applying voltage to it every 10 minutes or so. I would have it attached to a gear and have a locking mechanism to hold the gear in place once the stepper motor had turned it. Honestly, I’m not sure if it’s possible to do this with a stepper motor, any ideas?
Thanks
Most stepper drivers have the ability to disable the power to the motor. And if your mechanism is locked then when you re-power the motor is should start in the same place give or take one step.
...R
Thanks A lot Robin. Would you happen to know of a good high torque stepper and a driver I could use with my Arduino?
Thanks again
markb0410:
Thanks A lot Robin. Would you happen to know of a good high torque stepper and a driver I could use with my Arduino?
Thanks again
Have you studied the links I gave you?
How much torque do you need?
...R
Perhaps a solenoid and a ratchet would operate this secret machine of yours.
Paul
Robin, I need about 10N of force. I’m wondering what motor would give me the most torque with the least power needed.
Thank you for indulging me, since I don’t know much about stepper motors. I did read the article though!
markb0410:
Robin, I need about 10N of force.
You also need to know the speed at which the torque is required because the torque of a stepper motor declines significantly as speed increases. At maximum speed it will be zero.
I’m wondering what motor would give me the most torque with the least power needed.
The ordinary meaning of that question is "which stepper motor is most electrically efficient" and I suspect that is a very difficult question to answer. My guess is that there is not enough difference in their efficiencies to make it worthwhile trying to answer the question - certainly not for an Arduino hobbyist. Nasa sending devices into space might take a different view.
Once you know the torque required at a particular speed I think the best thing to do is study the web pages of the motor manufacturers that post torque vs speed graphs for their motors. And sorry, I can't remember the websites where I have seen such graphs.
...R
Thanks for your help Robin. I will do that.
markb0410:
I was wondering if anyone could help me out with this? I am looking for the highest torque motor I can find that can be powered by an Arduino. I don't want constant power supplied, and only want it to turn one step (@ 5 degrees) every 5-10 minutes, having it only draw power when it needs to turn. Ideally the lower the power draw the better. Does anybody have any suggestions or ideas on the matter. It would be much appreciated!
Thank You
Stepper motor is not going to do it. Servomotor or DC motor + worm gear are possibilities.
markb0410:
Robin, I need about 10N of force. I’m wondering what motor would give me the most torque with the least power needed.
Thank you for indulging me, since I don’t know much about stepper motors. I did read the article though!
Torque and power are actually pretty independent. Torque is related to current, power to speed x torque.
Thanks for the response Mark. As far as speed is concerned, I not looking for any speed. Actually the slower the better. I’m just looking for something high torque, low speed, low power draw and to only draw the power when it needs to @ 10 minutes or so. I can use up to 12V external power if needed. Do you still think the servo/ DC motor and worm gear are best?
Thanks again Mark
Best for what???? You have never described the purpose of the motor!
Paul
Thanks a lot Mark. I have been doing some research on servo motors and they look like a much better fit for my project and even easier to control with an Arduino. I really appreciate it. This looks like the way to go. Now I just need to find the right one.
Thanks again