The compact 5 Phase stepper driver project can handle motor up to 3.5amps supply 12-30V DC, 42V Supply input possible with few changes in circuit, driver has facility to set the load current.

OK, so I have searched on the net to find the answer to this and I can't find a suitable answer, so I am turning to everyone here:) I have a stepper motor: 5 phase stepping motor A5729-9115FV DC 2.0A 0.34 OHMS/PHASE 0.72deg/ Step FG6-5569 01 xx8n601918 oriental motor co.ltd My question about this, is if there is a way to drive this motor without using an IC chip. From what I gather this motor is a Unipolar motor, it has 5 leads.I have the components to put an H-bridge together, but I don't know if that will actually drive this motor, coupled with the fact that I am new to building circuits. Buying an IC is not really an option at this point for me(I know they are cheap, but I have salvaged all my components and I am trying to do this without spending money). If someone would be so kind as to give me some pointers, I would greatly appreciate it. How fast do you need to turn it How accurate do you need it to be What are you trying to do with it. Where are you in the world. YOU could drive it with 5 switches and do everything manually.

You could cycle it with a few transistors and some timer ics but your unlikely to be able to do this at all well with a small number of components you just happen to have around or found in old equipment. You could spend 2 or 3 $ on a microprocessor and a hand full of transistors. Easier to buy a designed driver IC - but you already know that. It is true, I really wanted to source this from the equipment I have managed to salvage, but it really may boil down to just buying the IC's. I intend to use this motor in a CNC application so it needs to be pretty accurate, as far as speed, I don't think it will need to be all that fast. I have numerous stepper motors that are smaller in size and I was thinking about going the SLS route, I have a few laser diodes salvaged from DVD-RW drives, but that is another beast all together, at this point I am just trying to get the base and gantry made and moving. Thanks for the input!

Animation of a simplified stepper motor (unipolar) Frame 1: The top electromagnet (1) is turned on, attracting the nearest teeth of the gear-shaped iron rotor. With the teeth aligned to electromagnet 1, they will be slightly offset from right electromagnet (2). Frame 2: The top electromagnet (1) is turned off, and the right electromagnet (2) is energized, pulling the teeth into alignment with it. This results in a rotation of 3.6° in this example.

Frame 3: The bottom electromagnet (3) is energized; another 3.6° rotation occurs. Frame 4: The left electromagnet (4) is energized, rotating again by 3.6°. When the top electromagnet (1) is again enabled, the rotor will have rotated by one tooth position; since there are 25 teeth, it will take 100 steps to make a full rotation in this example. A stepper motor or step motor or stepping motor is a that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any for (an ), as long as the motor is carefully sized to the application in respect to and speed. Are very large stepping motors with a reduced pole count, and generally are closed-loop. A bipolar hybrid stepper motor rotate continuously when is applied to their terminals.

The stepper motor is known by its property to convert a train of input pulses (typically square wave pulses) into a precisely defined increment in the shaft position. Tao lin math. Each pulse moves the shaft through a fixed angle. Stepper motors effectively have multiple 'toothed' electromagnets arranged around a central gear-shaped piece of iron. The electromagnets are energized by an external or a. To make the motor shaft turn, first, one electromagnet is given power, which magnetically attracts the gear's teeth.

When the gear's teeth are aligned to the first electromagnet, they are slightly offset from the next electromagnet. This means that when the next electromagnet is turned on and the first is turned off, the gear rotates slightly to align with the next one. From there the process is repeated.

Each of those rotations is called a 'step', with an of steps making a full rotation. In that way, the motor can be turned by a precise angle. The circular arrangement of electromagnets is divided into groups, each group called a phase, and there is an equal number of electromagnets per group. The number of groups is chosen by the designer of the stepper motor. The electromagnets of each group are interleaved with the electromagnets of other groups to form a uniform pattern of arrangement. For example, if the stepper motor has two groups identified as A or B, and ten electromagnets in total, then the grouping pattern would be ABABABABAB. Electromagnets within the same group are all energized together.