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        <title>Stepper/servo robot ramps 1.4 mega 2560</title>
        <description> Hey all,

I have printed and built the Robot released by Zortrax. It works fine 3 axis using nema 17 steppers .

[youtu.be]

I want to add some servo control for my end of arm tool i have connected the servos to the D11, D6,D5,D4 and added the jumper from VCC to 5V.

I have been trying to use the bed leveling threads as a guide.

Defined 4 servos in the configuration.h 

as far as the code construction of entered m280 p_ S___ 

this is vexing me I&#039;ve tried variations but only get immediate movement while the bot moves around but i cascaded a stepper move to a servo move 

G21
G91
G1 Z-13 F409
M280 P0 S10
M280 P1 S10
M280 P2 S10
G1 Z13 F409
M280 P0 S45
M280 P1 S45
M280 P2 S45
G1 Z-13 F409
M280 P0 S90
M280 P1 S90
M280 P2 S90
M107
M104 S0

but movement doesn&#039;t happen as i envision can someone please help?</description>
        <link>https://reprap.org/forum/read.php?167,570202,570202#msg-570202</link>
        <lastBuildDate>Tue, 11 Aug 2026 04:07:47 -0400</lastBuildDate>
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            <guid>https://reprap.org/forum/read.php?167,570202,618507#msg-618507</guid>
            <title>Re: Stepper/servo robot ramps 1.4 mega 2560</title>
            <link>https://reprap.org/forum/read.php?167,570202,618507#msg-618507</link>
            <description><![CDATA[ HI <br />
<br />
Was the servo control issue resolved ??<br />
<br />
I am printing the ZOrtrax and doing some mods <br />
<a href="https://grabcad.com/library/zortrax-robotic-arm-3d-printable-1" target="_blank"  rel="nofollow">PM Grab cad files</a><br />
<br />
I like the idea of using the ramps 1.4 but think i may want some more control of the steppers to ramp up and down the speed for each movement. <br />
<br />
Just wondering if that would be possible with Marlin / Ramps 1.4  ??]]></description>
            <dc:creator>bigfilsing</dc:creator>
            <category>Robots!</category>
            <pubDate>Sun, 31 Jan 2016 03:20:13 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?167,570202,596457#msg-596457</guid>
            <title>Re: Stepper/servo robot ramps 1.4 mega 2560</title>
            <link>https://reprap.org/forum/read.php?167,570202,596457#msg-596457</link>
            <description><![CDATA[ Hi BoByS<br />
<br />
I'm not the original poster but I got my STL from the Zortrax website, they require you to signup for the files but I see a lot of people never receive the email back from Zortrax with the link to download.<br />
<br />
Drop me a email at retrosaint AT gmail.com and i'll host it for you for a temp time.<br />
<br />
Chris]]></description>
            <dc:creator>retrosaint</dc:creator>
            <category>Robots!</category>
            <pubDate>Mon, 14 Dec 2015 04:25:17 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?167,570202,593797#msg-593797</guid>
            <title>Re: Stepper/servo robot ramps 1.4 mega 2560</title>
            <link>https://reprap.org/forum/read.php?167,570202,593797#msg-593797</link>
            <description><![CDATA[ I'm almost sure that you need to put G90 before the servos because they need to be set to absolute positioning for the M280 command.<br />
Also, where did you get the STL-s? Can you share a link?<br />
Best regards,<br />
Bobby]]></description>
            <dc:creator>BoByS</dc:creator>
            <category>Robots!</category>
            <pubDate>Mon, 07 Dec 2015 04:42:07 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?167,570202,583018#msg-583018</guid>
            <title>Re: Stepper/servo robot ramps 1.4 mega 2560</title>
            <link>https://reprap.org/forum/read.php?167,570202,583018#msg-583018</link>
            <description><![CDATA[ Hi egghead419<br />
<br />
Sorry I won't be much help regarding your servo motor problem, but I was just curious how the zortrax came out? I've downloaded the .STL files for the Zortrax recently and considering to build it.<br />
<br />
Is it a sound design? Is movement smooth and accurate?<br />
<br />
Regards<br />
Chris]]></description>
            <dc:creator>retrosaint</dc:creator>
            <category>Robots!</category>
            <pubDate>Wed, 11 Nov 2015 07:16:35 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?167,570202,570202#msg-570202</guid>
            <title>Stepper/servo robot ramps 1.4 mega 2560</title>
            <link>https://reprap.org/forum/read.php?167,570202,570202#msg-570202</link>
            <description><![CDATA[ Hey all,<br />
<br />
I have printed and built the Robot released by Zortrax. It works fine 3 axis using nema 17 steppers .<br />
<br />
[<a href="https://youtu.be/jE08L8UOf80" target="_blank"  rel="nofollow">youtu.be</a>]<br />
<br />
I want to add some servo control for my end of arm tool i have connected the servos to the D11, D6,D5,D4 and added the jumper from VCC to 5V.<br />
<br />
I have been trying to use the bed leveling threads as a guide.<br />
<br />
Defined 4 servos in the configuration.h <br />
<br />
as far as the code construction of entered m280 p_ S___ <br />
<br />
this is vexing me I've tried variations but only get immediate movement while the bot moves around but i cascaded a stepper move to a servo move <br />
<br />
G21<br />
G91<br />
G1 Z-13 F409<br />
M280 P0 S10<br />
M280 P1 S10<br />
M280 P2 S10<br />
G1 Z13 F409<br />
M280 P0 S45<br />
M280 P1 S45<br />
M280 P2 S45<br />
G1 Z-13 F409<br />
M280 P0 S90<br />
M280 P1 S90<br />
M280 P2 S90<br />
M107<br />
M104 S0<br />
<br />
but movement doesn't happen as i envision can someone please help?]]></description>
            <dc:creator>egghead419</dc:creator>
            <category>Robots!</category>
            <pubDate>Tue, 13 Oct 2015 13:33:09 -0400</pubDate>
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