Hi there,
I am a complete beginner, as a small project I wanted to make a feeder using 4 stepper motors, to feed simultaneously I have 1 Arduino uno card, 4 nema 17 stepper motors, 4 WJMY A4988 Stepper Motor Driver Module on top of a ZDelivery CNC Shield V3, and I got an ORNO 12 V Power Supply Open Frame with Overload and Short Circuit Protection (200 W) for the power supply (I final thing would be running 2 arduino boards with 4 stepper motors on each so 8 in total) but I wanted to start with only 4, Can i please have advice ? I have watched youtube tutorials and they were mostly about using the motors for 3D printing and only used 3 motors but some were too technical for me, the final result would be all the motors running at the same time for (let´s say 20° or a value that I can decide each 15 minutes) please keep in mind I am a complete beginner and I have no prior experience in this, Thank you.
Can You provide a link to the datasheet of exactly that driver? Some such drivers only run 3 independant steppers. The fourth driver follows the third, Z, driver.
you need to know CNC shield pinout then sketch will be very straightforward. watch videos how to control single A4988 module.
Here are links to each of the products that I used :
- WJMY A4988 Stepper Motor Driver Module Stepstick Stepper Motor Driver with Heatsink for 3D Printer (Pack of 5, Red) : Amazon.de: Business, Industry & Science
- AZDelivery CNC Shield V3 Development Board for A4988 Stepper Motor Driver Stepper for 3D Printer Compatible with Arduino Includes E-Book : Amazon.de: Business, Industry & Science
- STEPPERONLINE Stepper Motor 5 Pack Nema 17 Bipolar 42 Ncm 1.5 A 42 x 42 x 39 mm 4 Wires with 1 m Cable & Connector for 3D Printer / CNC Milling Machine Black : Amazon.de: Business, Industry & Science
- ORNO 12 V Power Supply Open Frame with Overload and Short Circuit Protection (200 W) : Amazon.de: DIY & Tools
I tried putting the small blue pin so it follows the other pins, but so far the motors keep doing a buzzing sound, and sometimes they would go making random full turns and some of them even heat up
Links to the datasheet, not to the sales site. We are ot interested in buying the shield.
Can you please tell a little more about your project and how everything works together?
Did you first try to get just one stepper working? Start small and then go on step by step.
And as mentioned already, give links to the technical data of the components you use.
If you already have a sketch, post it here too. (Remember the code tags!).
The A4988 is not a very suitable driver for your steppers. You need 1.5A coil current, which is quite a lot for an A4988. You need really good cooling. A DRV8825 would be better.
Hi, @astrocrocodile
Welcome to the forum.
This is not a small project and not really a beginner project.
Have you programmed an Arduino yet?
If so what was the project?
Have you a schematic to show us how you aim to connect it all?
Thanks.. Tom.. 
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