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I have 2 Stepper Motors (QMot stepper motor1 Amp, 5.3Ohms, 5.3 volts and 200 steps/rev.) , which are connected to the Adafruit shield2.4, they are mounted to Arduino Mega, the motors pull generally 2 A from external current from Adafruit. My problem is, they don´t rotate smoothly, clearly and fast at the same time. When I use DOUBLE to define my Stepps, speed is ok but rotation is lout and shaking. When I use MICROSTEP is more smoothly but too much slow. The program is running two stepper motors to roll up optical cables. The cables have to be really precisely come together and accurately be installed on pulley. Also I need a solution to run my Steppers Motors smoothly, clearly and fast. Incidentally, I want to know, do I need BigEasyDriver for that? If you need more info oder fotos feel free to ask

Regards,

Paria

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    What's an Adafruit shield2.4? Where is your code? – Majenko Aug 1 '16 at 11:06
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    Adafruit do hundreds of shields. Many of them have multiple versions. WHAT shield is it?!?! – Majenko Aug 1 '16 at 12:28
  • If you have two motors that always need to do the same thing at the same time why are you controlling two motors. It would be easy to splice [which means join] the two motors control wires together, – Code Gorilla Aug 1 '16 at 12:38
  • adafruit motor shield v 2.3 – Paria Aug 1 '16 at 13:46
  • my motors do diffrent things at the same time. I have to control the speed of second Motor, this motor shakes always according to its duty, that is too bad, I don´t know how to let it running smoothly and fast. With MICROSTEPS is too slowly and with DOUBLE is shaking... what should I do? can I begin with MICROSTEPS and change it into Double and again in MICROSTEPS at the end. Because the Motor have to roll up cabels. The cables have to be really precisely come together, because of that I need Smoothly running, specially at the beginning and at the end.... – Paria Aug 1 '16 at 13:58
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I'd look for a proper stepper driver, e.g. something based on A4988 or similar. I wasted a fair amount of time on the Adafruit motor-shield 2.3 until I finally abandoned it after failing to achieve higher speeds (I also had lots of issues with the motor getting hot). The A4988 takes care of step sequencing including micro-stepping and interfacing and programming is very simple. It only comes in surface-mount packaging but there are bread-board friendly carriers costing a few dollars available from multiple manufacturers.

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