Did you study the specifications of the expensive torque sensors? Can you apply that to a small motor for your project?Are you looking for a range of torque based on motor speed or are you looking for maximum stall torque?Paul
When I saw the prices, I searched for other products as even if they can get the job done, I cannot afford to pay.I would like to measure the current and/or torque of the motor while it is turning.
Hi, I want to measure the current and/or torque of small hobby-class DC motor. Are there relatively inexpensive good sensors that can get the job done with high accuracy? Torque sensors that I found cost hundreds or even thousands of dollars. They are also big. I also read that current sensors signals are noisy.
Not quite, Hall sensors are noisy. Only some current sensors use Hall sensors. Some are shunt-based, and forsmall currents shunt measurement is usually the best/simplest/cheapest approach.Mechanical torque sensing is specialist and expensive when the torque to be measured is on a rotatingshaft.
Thanks. For using shunt, do I have to cut the wire which corresponds to power supply to the motor and then connect the two pieces with a shunt in between?