Electronic motors - Electronic Circuits Projects Diagrams Free

2PAC Mafia · 3rd February 2005, 09:16 AM

Hello,

I would like to know the function of the pins (I/O) we can find on this kind of motors. On the picture there are 2 Minebea electronic motors I have, I think from a damaged videocassette, on these ones there is an small PCB with a small connector of 6 pin.

I would like to play a little bit with them and then understand the function of each pin but I don´t know what kind of inputs I should apply on them to make them run...

Thanks.

**Nigel Goodwin** · 3rd February 2005, 10:30 AM

From the look of them (particularly the left hand one), I would suspect they are stepper motors.

Try rotating them gently by hand, do you feel a large number of small 'steps' as you rotate it? (probaly 200 or so for a full rotation).

If they are steppers, you have to provide stepping signals for them, there are loads of stepper tutorials on the net - try google.

2PAC Mafia · 3rd February 2005, 10:36 AM

Hello Nigel,

yes, I turned them and I felt those steps you mean. OK, then I´ll look for step motors if I find something useful at google.

Thanks.

tansis · 3rd February 2005, 06:37 PM

MINI STEPPER MOTOR: NMB Brand, model # PM35S - 048. 24V DC Operation, 50ohm coil resistance, 6 wire. 7.5degree step angle.
Measures 42mm long, 32mm wide & 15.5mm high:
http://www.oatleyelectronics.com/stepper.html

NMB has a website as well , that should be worth exploring.

Phasor · 4th February 2005, 09:59 AM

From http://www.nmb-minebea.de/produkte/index.htm

PM55L-048 Ø 55 mm x 26,2 mm 7,5 GRAD < 20,0 Ncm
PM55L-096 Ø 55 mm x 26,2 mm 3,75 GRAD < 16,0 Ncm

Juglenaut · 4th February 2005, 11:43 PM

You will need a certain binary sequence to run steppers, and possibally a transistor driver array.

Most steppers have a standard code, however, companies like to be different.

to test the sequence, simply put each lead of the stepper as a input to the base of a transistor (a general one will work), and put a LED in relation to the collector so it turns on when pulsed, and the emmiter to ground using a 10 ohm resistor. Each lead will have it own transistor in sequence from pin one to the last. Spinning the shaft will repeat the sequence over and over. One of the pins is power.

Luckily those steppers are 4 bit binary driven.

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3rd February 2005, 10:30 AM	(permalink)
Nigel Goodwin	From the look of them (particularly the left hand one), I would suspect they are stepper motors. Try rotating them gently by hand, do you feel a large number of small 'steps' as you rotate it? (probaly 200 or so for a full rotation). If they are steppers, you have to provide stepping signals for them, there are loads of stepper tutorials on the net - try google. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

3rd February 2005, 10:36 AM	(permalink)
2PAC Mafia	Hello Nigel, yes, I turned them and I felt those steps you mean. OK, then I´ll look for step motors if I find something useful at google. Thanks. __________________ Regards from Mallorca. You´ll never know enough...

3rd February 2005, 06:37 PM	(permalink)
tansis	MINI STEPPER MOTOR: NMB Brand, model # PM35S - 048. 24V DC Operation, 50ohm coil resistance, 6 wire. 7.5degree step angle. Measures 42mm long, 32mm wide & 15.5mm high: http://www.oatleyelectronics.com/stepper.html NMB has a website as well , that should be worth exploring. __________________ It may seem like a good idea at the time but.. never stir your cold coffee with a soldering iron.

4th February 2005, 09:59 AM	(permalink)
Phasor	From http://www.nmb-minebea.de/produkte/index.htm PM55L-048 Ø 55 mm x 26,2 mm 7,5 GRAD < 20,0 Ncm PM55L-096 Ø 55 mm x 26,2 mm 3,75 GRAD < 16,0 Ncm

4th February 2005, 11:43 PM	(permalink)
Juglenaut	You will need a certain binary sequence to run steppers, and possibally a transistor driver array. Most steppers have a standard code, however, companies like to be different. to test the sequence, simply put each lead of the stepper as a input to the base of a transistor (a general one will work), and put a LED in relation to the collector so it turns on when pulsed, and the emmiter to ground using a 10 ohm resistor. Each lead will have it own transistor in sequence from pin one to the last. Spinning the shaft will repeat the sequence over and over. One of the pins is power. Luckily those steppers are 4 bit binary driven. __________________ Your website has been blocked