<div dir="auto">Hi Ant,<div dir="auto"><br></div><div dir="auto">Your best bet would be to join the list and ask. We're a friendly bunch, and you don't need to have met in person before asking interesting questions on the list. Having said that, our next meeting is just over a week away. You're welcome to come along and say hi.</div><div dir="auto"><br></div><div dir="auto">Mark: Ant sent this to the moderator address, so it's only visible to us, not to the membership at large.</div><div dir="auto"><br></div><div dir="auto">Andrew</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jul 11, 2020, 08:33 Mark Atherton <<a href="mailto:markaren1@xtra.co.nz">markaren1@xtra.co.nz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Ahh, I understand.</div>
<div><br>
</div>
<div>So, does anyone here have a spare that
Ant might be able to borrow ?</div>
<div><br>
</div>
<div>-Mark<br>
</div>
<div><br>
</div>
<div>On 11/07/2020 8:27 AM, Ant Williams
wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">You are quite correct. That controller card will
do what i want. 🙂.
<div dir="auto"><br>
</div>
<div dir="auto">But it is weeks away and I am wanting to try my
gadget out. So I'm seeing if your group might have something
similar at hand. </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, 11 Jul 2020, 08:23
Mark Atherton, <<a href="mailto:markaren1@xtra.co.nz" target="_blank" rel="noreferrer">markaren1@xtra.co.nz</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>If I understand correctly, it looks like you have
bought a complete H bridge servo amplifier, and it may
already do what you want.</div>
<div><br>
</div>
<div>The unit appears to use a feedback pot to sense
position of the motor.</div>
<div><br>
</div>
<div>The unit appears to be able to accept 0-5V or 1-2ms PWM
(model servo) control input depending on settings of the
blue and pink movable jumper.</div>
<div><br>
</div>
<div>Neat product.</div>
<div><br>
</div>
<div>... well at least that is my interpretation of what the
product does, I may be completely wrong :)</div>
<div><br>
</div>
<div>Let me know if that was of use, or if I have missed the
point.</div>
<div><br>
</div>
<div>Regards, Mark<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>On 11/07/2020 7:47 AM, arrkwill wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Thanks for your quick response Mark.</div>
<div dir="auto"><br>
</div>
<div dir="auto">I have ordered one of these from
AliExpress but it is taking ages to get here. 🙃</div>
<div dir="auto"><a href="https://www.newbecca.com/product/35167306166" rel="noreferrer noreferrer" target="_blank">https://www.newbecca.com/product/35167306166</a></div>
<div dir="auto"><br>
</div>
<div dir="auto">I have a 60w 12vdc motor that moves a
device and the position of the device is monitored by a
pot giving 0-5vdc back. I need to be able to control the
position by setting another pot somewhere in the range
of 0-5v. </div>
<div dir="auto"><br>
</div>
<div dir="auto">So the motor needs to be driven
forward/reverse to match output to input. I need the
control to include a PID just as most servo systems do. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Does this help? </div>
<div dir="auto">Ant</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div id="m_-3392098788832662436m_2214351889434011245composer_signature" dir="auto">
<div style="font-size:85%;color:#575757" dir="auto">Sent
from my Samsung Galaxy smartphone.</div>
</div>
<div dir="auto"><br>
</div>
<div><br>
</div>
<div style="font-size:100%;color:#000000" dir="auto">
<div>-------- Original message --------</div>
<div>From: Mark Atherton <a href="mailto:markaren1@xtra.co.nz" rel="noreferrer noreferrer" target="_blank"><markaren1@xtra.co.nz></a>
</div>
<div>Date: 11/07/20 07:17 (GMT+12:00) </div>
<div>To: Ant Williams <a href="mailto:arrkwill@gmail.com" rel="noreferrer noreferrer" target="_blank"><arrkwill@gmail.com></a>,
<a href="mailto:chchrobotics-owner@lists.ourshack.com" rel="noreferrer noreferrer" target="_blank">chchrobotics-owner@lists.ourshack.com</a>
</div>
<div>Subject: Re: Servo controller </div>
<div><br>
</div>
</div>
Hi Ant,<br>
<br>
Can you tell us more about your requirement please.<br>
<br>
So the servo amplifier runs off of a 12V supply, and is
capable of <br>
delivering up to 10A max output current.<br>
<br>
The input control signal is analogue/linear 0 to 5V.<br>
<br>
<br>
What output configuration are you looking for ?<br>
<br>
a - Single ended (0V in = 0V out, 5V in = 12V out)<br>
<br>
b - H bridge as above, but second output with inverted
sense of 12V output.<br>
<br>
c - Other - more details please<br>
<br>
<br>
It would also be useful to know a bit more about your
application, if <br>
possible.<br>
<br>
Regards,<br>
<br>
Mark<br>
<br>
<br>
<br>
<br>
On 11/07/2020 7:02 AM, Ant Williams wrote:<br>
> Hi there. I'm actually just seeking advice, not
wishing to join. <br>
> Perhaps you can assist?<br>
><br>
> I'm looking for a 12vdc 10A servo controller which
takes 0-5vdc as its <br>
> control signal (not PWM) for an experiment I'm
trying.<br>
><br>
> Any advice?<br>
><br>
> Regards<br>
> Ant Williams<br>
<br>
<br>
</blockquote>
<p><br>
</p>
</div>
</blockquote>
</div>
</blockquote>
<p><br>
</p>
</div>
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