Hello thanks in advance for the help. I was previously trying to use an adafruit v2 motor shield to control two 1.7A stepper motors connected with planetary gears. However after consulting adafruit the motor shield was inadequate for controlling the two stepper motors. However after searching robotshop.com I came across a motor shield that is constructed to drive to stepper motor and can apparently handle up to 2A per coil. The simple question is can it handle two 12V 1.7 A 666 oz-in bipolar stepper motors.
here is the motor shield I’m works from robot shop
i459.photobucket.com/albums/qq313/Dareupgang/motorshiled_zpsfca3e449.jpg
The links
robotshop.com/en/dual-bipolar-stepper-motor-controller-arduino.html#description
here are the stats of the motor
i459.photobucket.com/albums/qq313/Dareupgang/motorstats_zpsee529993.jpg
the link
robotshop.com/en/geared-bipolar-stepper-motor-3v-555-oz-in.html
I had one more question about another shield the Cytron 3-40 2A unipoloar/bipolar stepper motor controller. I understand it has a 2A capacity and was suggested with the previously linked motor. I wanted to know if I would have to use multiple shields to run two stepper motors and if so is there any way to insure the motors are in sync. I understand the shield has its own interface, does this interface allow them to be stacked.
i459.photobucket.com/albums/qq313/Dareupgang/potentialshiled_zps2c4aaa32.jpg
I received my motors however the output shaft from the planetary gearbox is not turning, is that normal ? Or the gears ceased and I should open it up
For powering the shield and arduino combination a long with the motors I wanted to know if a usb output is adequate or will an external power source be needed ? Also this might be a stupid question but I only ask because of my lack of my experience with stepper motors does the shield control the reversibility of the motor or is than an issue of coding
Is there any chance of the shield overheating, I was reading A4988 has trouble handling 2A without agressive cooling
The product is new and it is highly unlikely that the gears have seized. It is likely an issue with the wiring or the code being sent to the motor controller. A 99:1 gear ratio is quite high and you will likely not be able to turn the shaft by hand.
We have not tested that particular combination, but the two should be compatible based on their specs.
When considering USB, it’s important to note that a USB port can only provide about 400mA of current at 5V. This is likely shared between the electronics and the actuators. Most actuators easily require 1A or more, so it’s safest to assume that you need a separate power supply for the actuators. Stepper motor controllers allow you to control the number of steps and direction (sometimes speed or relative position).
The Cytron controller has a heatsink and a fan. You also need to understand that most motors have a low duty cycle, essentially meaning that they need time a good % of the time to cool off.
