2017年8月31日 · The pictured motor is a DC motor, quite common in DVD drives. Components on PCB, located under the white (not-tooth wheel) are for measuring speed/spin direction for feedback control. To make it work you have to see how to control a DC motor. Driving DC motor is quite easy. Try not to break the feedback control, you may find it helpful later.

2014年10月19日 · 4 pins would most likely be a bipolar stepper motor. Two pins per coil (often two coils in series, but seen as one coil), two coils (or coil pairs): Grab a small battery (AA) and see which pairs make the stepper twitch.

2015年4月13日 · The small size and low cost of a CDROM motor mean that you can't expect high resolution from the motor. That is provided by the lead screw. Also, not all such motors do 20 steps/rev. 24 is also a common spec. You'll just have to test your motor to see what it does, but that should be pretty much the ballpark number.

2018年4月15日 · I, like many others, am playing with a DVD drive stepper motor. I ordered some L298N driver boards, hooked everything up and got movement, but it's choppy. I've tried every orientation of the motor wires. I have identified my coil pairs, but I don't know which is considered A+ and A- or B+ and B-.

I found a tutorial but it's asking about the current rating. From my stepper motor datasheet, the only information related to current is the following: Rated Current (Amps/Phase) = 1.68 A. In the online tutorial that i'm following, this is the example given for their stepper motor: NEMA 17 200steps/rev, 12V 350mA.

2017年6月30日 · The motor spec you quote above is for a 3 Phase stepper with 5.8 A current The driver you specify is for a 2 Phase stepper with a maximum of 4.5 A per phase capability. The first thing to understand is that 2 phase and 3 phase stepper motors do not act like AC motors at all.

2018年7月6日 · Just bought a small DC motor speed controller (two LM324, two IRFZ44N, rated at 250W max output, input in range 5-10 to 30V DC) and started wondering how to synchronise six DVD-RW spindle motors (Nidec L16210A/18C293A160, nothing came from a google search). They have 6-pin flat cable but don't know which one returns the signal for rpm.

2017年11月24日 · I understand how the stepper motor works, but do not know how to use this chip to control it. I am used to a 'step' and 'dir' pin, where as it appears, this IC has a "SLED IN1" and "SLED IN2" pin (pin 28 and 29), which I assume is how you control the sled's stepper motor. I could also use help determining the input voltage for said pins.

2014年10月7日 · However the motor could draw over 500mA, so make sure that your power supply can handle the extra load. It might be safer to use a separate power source for the L293 (four AA Alkaline cells will do if you don't have a suitable a mains power pack). \$\endgroup\$

2011年3月22日 · The resonant frequency of a stepper motor's rotor is usually somewhere around 50 Hz ... 400 Hz. When you drive the motor in full-step mode at its own mechanical resonant frequency, things will get pretty bad and it is likely that you lose (jump over) steps. For slow speeds, it is a good idea to stay below the motor's resonant frequency.