I think they are all essentially the same. It’s going to be hard to help if you keep the datasheet secret. The Pololu A driver may well be suitable and if you look that up you should see wiring details. JimboZA, that looks very useful. Johannesburg hams call me: Images from Reply 13 so we don’t have to download them. Two or three hours spent thinking and reading documentation solves most programming problems.
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There are only two separate circuits but they are wound as several coils. You can see the whole chip, but the upper part, with the white plastic connector for four wires has broken off. However I would recommend the OP uses the A driver or some similar driver specifically for stepper motors rather than the M49ps-2k Read times previous topic – next topic.
As far as I know many stepper motors specify the voltage that gives the permitted current – in which case this would be described as a 4.
I reckon you haven’t looked at the Wikipedia article. In some circumstances it is necessary to “reverse” the connections to one or other of the coils so the electromagnets work against each other. Images from Reply 13 so we don’t have to download them.
Unfortunately, the chip is mitsuumi, just above the 8 contact points. By energizing them in the right order the rotor which is a permanent magnet moves.
Mitsumi M49sp-2k LF Rk 01 stepping Motor | eBay
I think they are all essentially the same. Do you wire them all up similarly?
The “logic” is provided by the Arduino and the stepper motor driver board. There is no intelligence or logic inside the motor any more than there is in a regular DC motor – just coils and magnets. Within the motor there are two separate electromagnet coils. I salvaged it from a photocopier printer. You will need some sort of interface between the Arduino and the motor because the M49sp-k can’t supply enough current or 24V.
The specifications say the coil resistance is 4. I think you have the wrong mental model.
Mitsumi M49SP-2K stepper motor. I see nothing in the datasheet you provided to make me think there is anything unusual about the motor. If I’m honest I don’t know the answer to your questions.
There are also several poles on the permanent magnet rotor.
Mitsumi Stepping Motor M49sp-2k With Board and Gears Taken From a Xerox M20i
Johannesburg hams call me: Measure the resistance at the pairs of terminals. I know it is 24V and has 4 wires but I have the faintest idea how to wire it up with an arduino.
With four wires there is usually one pair for each coil – checking the resistance should be able to identify the pairs.
Can some one point me in the direction of a good tutorial that explains how to use one of these. Using Ohm’s law that would suggest a current, at 24V of 5. Two or three hours spent thinking and reading documentation solves most programming problems. So, I am left with the 8 soldering points, instead of the usual m4s9p-2k wires, that you can plug in.
Please see the photo below.
Info Required – M49SP-2K stepper motor
But you don’t connect the two “ground” wires together or the two power wires. If you wish you can think of one mittsumi each pair of wires being ground and the other power.
It’s going to be hard to help if you keep the datasheet secret. Or do they vary wildly in the way you have to wire them up?