2020年4月10日 · A Running Stepper motor is no stepper😊 If a stepper is at standstill, the torque generated is proportional to the deviation of the rotor to the neutral position. That is: Torque = constant times angle. This is the equation of a harmonic oscillator. In reality this system is damped, so the oscillation comes to an end after some time.

2013年1月8日 · Stepper motors provide more torque when driven slowly, and even at a snails pace, a stepper motor may not provide enough torque to overcome a platform of a given weight and diameter. Of course you can always use gearing or pulleys to obtain more torque, but this adds to the complexity of the design and machining.

2003年7月28日 · Can I do this. Can I amplify the voltage with a tranistor. I would hate to have to add 8 AA batteries just to power the turret for the cam. Thanks.

2020年11月29日 · A stepper motor does not use PWM to work. A stepper motor is just that, it steps each time a pulse is generated on the pulse line. The direction pin tells the MC3479 what direction the motor should step in. So to use a stepper motor for this application you need to know how many steps to generate to get the movement you need.

2011年2月2日 · The weird thing is I only connect the 4 phases only, without the 2 RED wires connected (Power wires) the motor still running. My question is do I need to connect all 6 wires? And does the torque of the motor decrease because of the RED wires not connected? Here is the diagram I connect for the 4 phases: ' P4 -> ULN2003.1, ULN2003.16 -> Phase 1 ...

2000年4月26日 · Hi, I want to run a small 4 pin stepper motor (the MondoTronics type). Can I run it directly from the stamp, or do I need to use a driver board?

2001年2月13日 · Holding Torque* (min, mNm/oz-in) Detent Torque (max, mNm/oz-in) Step Angle* Steps per Revolution Rotor, Moment of Inertia (gm 2) Insulation Resistance at 500 Vdc Lead Wire Type Bearing Type Max Operating Temperature Ambient Temperature Range Dielectric Strength Weight (g/oz) *Measured with Two Phases Energized 38.8/5.5 7.5 o ±.5 o 48 Steps 5. ...

2018年4月1日 · A stepper can be driven by changing only 1 pin at a time but this doesn't produce much torque compared to Full-Stepping. Half-Stepping the motor doubles the number of steps per revolution. Experiment #26 (p. 146) uses a servo.

2012年7月7日 · { another Stepper Motor Test Using 28BYJ48-12-300 Motor ULN2003 Motor Controller Theoretically, " each step is 5.626 degrees / 64 (gear reduction) or 0.087890625 degrees The coils are energized in 8 steps or 0.703125 degrees (8*0.087890625 degrees) Each revolution is 360 degrees/0.087890625 degrees/rev or 4096 steps or 512 8-steps cycles."

2009年12月10日 · From what I have learned about steppers this far is that they are ALWAYs drawing full current which is why they have the torque at low speed. · So, if at idle or · at speed it is drawing full current, then sensing current isn't possible. · Furthermore, you cannot over "current" a stepper motor without damage.