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        <title>Adding LEDs for lighting, on the RAMPS 1.4</title>
        <description> What would be a good approach to add some LED strips for lighting purposes (mounted onto the X carriage) using the RAMPS 1.4 and Marlin?

I need something I can turn on and off with gcodes.</description>
        <link>https://reprap.org/forum/read.php?219,487079,487079#msg-487079</link>
        <lastBuildDate>Sat, 13 Jun 2026 14:45:41 -0400</lastBuildDate>
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            <guid>https://reprap.org/forum/read.php?219,487079,488517#msg-488517</guid>
            <title>Re: Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,488517#msg-488517</link>
            <description><![CDATA[ Ok, I'll explore that, most likely it will requite some custom code.<br />
Thanks!]]></description>
            <dc:creator>Nandox7</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Wed, 25 Mar 2015 13:22:58 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?219,487079,488487#msg-488487</guid>
            <title>Re: Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,488487#msg-488487</link>
            <description><![CDATA[ Marlin has a setting to turn on a pin (normally to control a fan) when the hot end temperature reaches a configured temperature. You'd have to tweak it to look at the bed temp instead of hot end, but you could use that to turn on an pin to show a status LED.]]></description>
            <dc:creator>cdru</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Wed, 25 Mar 2015 12:08:35 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?219,487079,488479#msg-488479</guid>
            <title>Re: Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,488479#msg-488479</link>
            <description><![CDATA[ I was actually trying to add a led that gets on whenever the head bad is above X degrees.]]></description>
            <dc:creator>Nandox7</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Wed, 25 Mar 2015 11:34:28 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?219,487079,488194#msg-488194</guid>
            <title>Re: Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,488194#msg-488194</link>
            <description><![CDATA[ The original idea was for a fan, but I don't see any reason you could not use it for a couple of leds.  Just check your current ratings first.<br />
<br />
[<a href="http://www.thingiverse.com/thing:723781" target="_blank"  rel="nofollow">www.thingiverse.com</a>]<br />
<br />
Have fun, good luck]]></description>
            <dc:creator>kd6hq</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Tue, 24 Mar 2015 21:06:16 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?219,487079,487280#msg-487280</guid>
            <title>Re: Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,487280#msg-487280</link>
            <description><![CDATA[ I use a custom fan controller connected to a series of LEDs I've hot glued to the bottom of my x-carriage. M42 is the g-code to turn the selected pin on and off, or optionally if you're using a PWM port, to what value you want the pin to be at (0-255). You likely will get a flicker when the heated bed or extruder reach temperature as the high current loads rapidly turn on and off. You can either use a constant current driver or run a separate voltage regulator to smooth out the flicker.]]></description>
            <dc:creator>cdru</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Mon, 23 Mar 2015 09:11:29 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?219,487079,487079#msg-487079</guid>
            <title>Adding LEDs for lighting, on the RAMPS 1.4</title>
            <link>https://reprap.org/forum/read.php?219,487079,487079#msg-487079</link>
            <description><![CDATA[ What would be a good approach to add some LED strips for lighting purposes (mounted onto the X carriage) using the RAMPS 1.4 and Marlin?<br />
<br />
I need something I can turn on and off with gcodes.]]></description>
            <dc:creator>fractal5</dc:creator>
            <category>RAMPS Electronics</category>
            <pubDate>Sun, 22 Mar 2015 18:33:07 -0400</pubDate>
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