Batch buy of L6470 Stepper Driver Breakouts - London Hackspace

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Message from discussion Batch buy of L6470 Stepper Driver Breakouts
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From: Charles Yarnold <charlesyarn...@gmail.com>
Date: Tue, 2 Oct 2012 01:51:20 +0100
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Subject: Re: [london-hack-space] Re: Batch buy of L6470 Stepper Driver Breakouts
To: london-hack-space@googlegroups.com
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The honest answer is I'm not sure, I was planning on figuring out the
software once they arrived.

On the note of chaining boards I will be adding option jumpers to the board
so you can choose to have the BUSY lines etc either linked or taken from
each chip individually.

With this and heat changes I'm getting close to a final prototype.

Sol

On 1 October 2012 07:34, Robert <pins...@gmail.com> wrote:

> Definitely not a show stopper!
>
>
> I'm not too sure about daisy chaining either as there are some 1 byte
> commands but also some 4 byte commands. How do I send a 4 byte commands t=
o
> one chip but a one byte to another? MSB padding or LSB padding? I think I
> was gonna make my own daisy chained board and experiment.
>
>
> On Wednesday, 26 September 2012 00:37:35 UTC+1, Solexious wrote:
>
>> Hello all,
>>
>> One of my upcoming projects is making my own pick and place and on my
>> list of things to build for it are stepper motor drivers.
>>
>> After asking around I have settled on the L6470 stepper driver, it seems
>> an awesome chip. It works over spi and all you need to do is tell it whe=
re
>> to go, it handles driving the stepper for the correct number of steps,
>> acceleration, deceleration, correcting for missed steps, stall detection=
,
>> homing switch control and a whole lot more.
>>
>> You can see more here: https://www.sparkfun.**com/products/10859<https:/=
/www.sparkfun.com/products/10859>
>>
>> The snag is I need 10 of them, and at ~=A325 a pop its not cheap, so I'm
>> going to make my own breakouts.
>>
>> Its looking like I can get the price down to ~=A311 each driver, with
>> boards containing 3 and 4 drivers on each (3 drivers on a board being ~=
=A333,
>> 4 being ~=A344).
>>
>> Would anyone else be interested in buying some of these if I was to make
>> a surplice, how many would you be interested in? If we get interest I wi=
ll
>> get a fixed cost and pop up a wiki page for orders.
>>
>> Hugs,
>>
>> Sol
>>
>

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The honest answer is I&#39;m not sure, I was planning on figuring out the s=
oftware once they arrived.<div><br></div><div>On the note of chaining board=
s I will be adding option jumpers to the board so you can choose to have th=
e BUSY lines etc either linked or taken from each chip=A0individually.</div=
>

<div><br></div><div>With this and heat changes I&#39;m getting close to a f=
inal prototype.</div><div><br></div><div>Sol<br><br><div class=3D"gmail_quo=
te">On 1 October 2012 07:34, Robert <span dir=3D"ltr">&lt;<a href=3D"mailto=
:pins...@gmail.com" target=3D"_blank">pins...@gmail.com</a>&gt;</span> wrot=
e:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Definitely=A0not a show stopper!<div><br></d=
iv><div><br></div><div>I&#39;m not too sure about daisy=A0chaining=A0either=
 as there are some 1 byte commands but also some 4 byte commands. How do I =
send a 4 byte commands to one chip but a one byte to another? MSB padding o=
r LSB padding? I think I was gonna make my own=A0daisy=A0chained board and =
experiment.<div class=3D"im">

<br><br>On Wednesday, 26 September 2012 00:37:35 UTC+1, Solexious  wrote:</=
div><div><div class=3D"h5"><blockquote class=3D"gmail_quote" style=3D"margi=
n:0;margin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">Hello al=
l,<div>

<br></div><div>One of my upcoming projects is making my own pick and place =
and on my list of things to build for it are stepper motor drivers.</div><d=
iv><br></div><div>After asking around I have settled on the=A0L6470 stepper=
 driver, it seems an awesome chip. It works over spi and all you need to do=
 is tell it where to go, it handles driving the stepper for the correct num=
ber of steps, acceleration, deceleration, correcting for missed steps, stal=
l detection, homing switch control and a whole lot more.</div>



<div><br></div><div>You can see more here:=A0<a href=3D"https://www.sparkfu=
n.com/products/10859" target=3D"_blank">https://www.sparkfun.<u></u>com/pro=
ducts/10859</a></div><div><br></div><div>The snag is I need 10 of them, and=
 at ~=A325 a pop its not cheap, so I&#39;m going to make my own breakouts.<=
/div>



<div><br></div><div>Its looking like I can get the price down to ~=A311 eac=
h driver, with boards containing 3 and 4 drivers on each (3 drivers on a bo=
ard being ~=A333, 4 being ~=A344).</div><div><br></div><div>Would anyone el=
se be interested in buying some of these if I was to make a surplice, how m=
any would you be interested in? If we get interest I will get a fixed cost =
and pop up a wiki page for orders.</div>



<div><br></div><div>Hugs,</div><div><br></div><div>Sol</div>
</blockquote></div></div></div></blockquote></div><br></div>

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