Controlling stepper motor by sensing a reference load

Projects General Guidance
1

I am trying make a mini project named overload monitoring system for vehicles. I am trying to use a load sensor and a stepper motor and Arduino. Where there will be a reference load (in the module) and the motor will be controlled (on/off) according to the reference load, which means if the load sensor sense a load higher than the reference load the motor will stop running and then again if we decrease the load (lower than reference load) the motor will start automatically.

Now the problem is I cannot understand how to connect them all for the implementation. I cannot figure out the circuit diagram. Please help. I just need to know the connections. :frowning:

2

Draw a mechanical diagram showing how this all fits together.

3

LiXia:
Now the problem is I cannot understand how to connect them all for the implementation. I cannot figure out the circuit diagram. Please help. I just need to know the connections. :frowning:

Before there can be a connection diagram you need to identify all of the specific items that will need to be connected. In this case it seems to be

  • the Arduino board (which one?)
  • the stepper motor (post a link to its datasheet)
  • the stepper motor driver
  • the stepper motor power supply
  • the load sensor (post a link to its datasheet)

It would also be a big help if you explain what the stepper motor is intended to do.

...R

4

IMO a stepper motor is not suitable for your project. It will simply fail to step if the load is too high, with no feedback through current or the load sensor. I'd try a DC motor instead. For real vehicles DC or BLDC motors are preferred.

How do you want to use the reference load?

What kind of load do you want to handle (torque)? Stopping the motor of a vehicle on a steep slope will not stop the vehicle.

5

DrDiettrich:
How do you want to use the reference load?
What kind of load do you want to handle (torque)? Stopping the motor of a vehicle on a steep slope will not stop the vehicle.

Loads like passengers or goods in public transports. I just want to make it like if overload happens the motor will stop (as well the vehicle).

6

LiXia:
I just want to make it like if overload happens the motor will stop (as well the vehicle).

That does not explain what the stepper motor is intended to do. I presume it is intended to do more than just rotate with a bit of sticky-tape on the shaft so people can see whether it is rotating.

And is this for a scale model vehicle or a full-sized human carrying vehicle?

...R

7

Robin2:
And is this for a scale model vehicle or a full-sized human carrying vehicle?

...R

For a model vehicle. [and ok.. assume it's a DC motor not a stepper motor.]

8

LiXia:
[and ok.. assume it's a DC motor not a stepper motor.]

That still does not tell us why you have a motor. Is it a big secret?

...R

9

I think that we still need the answers to the questions in reply #2 except, now, replace stepper motor with DC motor.