Posts Tagged ‘easydriver’
Manually controlling bipolar stepper motor with Arduino and EasyDriver
February 22nd, 2013 | 
Author:
Stepper motors are great for accurate positioning because they move in discrete steps – a feature that makes them very appropriate for CNC software control. But every once in a while you have an application where you need to press a button and rotate some kind of a jig at a preset angle or move something a preset distance if it’s a stepper-driven linear stage. So, I decided to modify an earlier Arduino sketch I wrote for testing the world’s smallest stepper motor to make it a bit more useful (and clean any bugs in the process). Keep reading to see what came out … Read the rest of this entry »
Posted in Arduino, CNC, Motor Control, Robots | 
Tags: arduino, bipolar stepper, easydriver, stepper motor | 
64 Comments »
World’s Smallest Stepper Motor with Arduino and EasyDriver
This little wonder of electromechanical engineering came from inside a laser diode sled of an HP CT10L Bluray drive I’ve opened some time ago. The device on the picture consists of several parts, all easily fitting on a dime coin: a bipolar stepper motor with lead screw, a linear stage, a lens, and even an end position sensor (I’ve yet to make use of the sensor though). The entire assembly is only 14mm x 9mm x 4mm. This post is about making this tiny motor move. Keep reading! Read the rest of this entry »
Posted in Arduino, Motor Control, Teardowns |
Tags: arduino, bipolar stepper, easydriver |
31 Comments »
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- michael: Hi Your sin(x) wave is going from zero to PWM-max value – so you are driving maximal possible current....
- Subhash G Gadiyar: thankyou very much, i knew pattern matching concept by using for loops but in right time u made me...
- Bruno Cabral: Do you think this kind of laser and optics is enough to vaporize black ink in a painted PCB?
- Bruno Cabral: Is this the one you’re wanting to source? https://www.aliexpress.com/ite m/4000117844997.html...
- Bruno Cabral: Just for clarification, the mount is diode -> compression nut -> washer with lens -> mip ->...
- Bruno Cabral: Never mind, I found it!
- Bruno Cabral: What are that 1/8 golden color parts? Do you have english names for it so I can google something...
- Ernest Smith: The best thing to do with a functioning motor with a bad controller(expense wise) is to use ROS and...
- JiriK: The school (Turku AMK Sepänkatu campus / Finland) is moving to a new site so they are clearing the building. I...
- admin: First of all – your local polytechnic school gives a new meaning to the phrase “dumpster...