<div dir="ltr"><div>Jahn,</div><div><br></div>I'm currently working on a motor controller to use with brushed DC motors, however, to use it with a steeper motor is a software change. The current design will handle up to 15 amps, but can go higher with some component changes. I'm still a month or so away from getting this all to work. This will use a dedicated Atmel micro-controller. I estimate the board size to be in the 8 x 10 cm range, one board per motor. Jahn, what are the specs of the motor you will be using? Do you need micro-stepping. Are the motors unipolar or bipolar (Number of wires)? Anything else would be helpful also.<div>
<br></div><div>Carl</div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, Mar 23, 2014 at 1:42 PM, Sofie Permana <span dir="ltr"><<a href="mailto:shperman@ncsu.edu" target="_blank">shperman@ncsu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">An off-the-shelf solution that I used is Little Step-U motor driver <a href="http://www.parallax.com/product/27938" target="_blank">http://www.parallax.com/product/27938</a>. I use it to control the stepper motor on my current project. It communicating through serial communication, and already have a complete drive system, can do half/full step, and can incorporate emergency switch input (<a href="http://www.tla.co.nz/littlestep.pdf" target="_blank">http://www.tla.co.nz/littlestep.pdf</a>). You just need to send the desired speed or position and it'll take care of the rest (calculating and sending command). It is pretty easy to use and I don't need to redo making the driver.<div>
I connect mine to PC using with <a href="http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm" target="_blank">http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm</a>. </div><div><br></div><div>Sofie</div></div>
<div class="gmail_extra">
<br><br><div class="gmail_quote"><div><div class="h5">On Sat, Mar 22, 2014 at 6:07 PM, Shane Trent <span dir="ltr"><<a href="mailto:shanedtrent@gmail.com" target="_blank">shanedtrent@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<span>I have a grbl on uno with shield setting on my desk. Does 30v and 2.5A per coil. Can you share more about your specs and or application? TinyG is nice and gives you smooth coordinated motion on up to four channels. <div>
<br></div>
<div>Shane</div></span><div>—<br>Sent from <a href="https://www.dropbox.com/mailbox" target="_blank">Mailbox</a> for iPhone</div><div><div>
<br><br><div class="gmail_quote"><p>On Sat, Mar 22, 2014 at 5:47 PM, Jahn <span dir="ltr"><<a href="mailto:animoduro@gmail.com" target="_blank">animoduro@gmail.com</a>></span> wrote:<br></p><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<h2 style="margin:10px 0px;padding:0px;border:0px;font-family:'Times New Roman';font-size:1.4em;line-height:1.4em;vertical-align:baseline;clear:left">
<span style="font-size:medium;font-weight:normal;line-height:normal">We are looking for a passionate expert who is able to put together a reliable solution for controlling up to three (3) but at least two (2) stepper motors. </span><span style="font-size:medium;font-weight:normal;line-height:normal">We are flexible with the choice of hardware (Arduino, BeagleBone Black, etc.).</span><br style="font-size:medium;font-weight:normal;line-height:normal">
<span style="font-size:medium;font-weight:normal;line-height:normal">Thank you for your interest!</span><br></h2>
<div><font size="1">Durham, Tel: <a href="tel:919-399-1589" value="+19193991589" target="_blank">919-399-1589</a></font></div>
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