<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
    <channel>
        <title>DC SSR to Replace Heated Bed Circuit?</title>
        <description> I&#039;ve had my printer for over a year and the other day thermal runaway tripped on the heated bed. I took a look around and saw my connector had melted down (Picture). 

Is it possible to alter pins.h of Marlin to use a spare pin that to trigger a DC SSR with a heatsink (Link) connected to a typical PCB heater? Or would it be better to replace the whole ramps board?

Thanks in Advance</description>
        <link>https://reprap.org/forum/read.php?1,686792,686792#msg-686792</link>
        <lastBuildDate>Tue, 16 Jun 2026 08:43:04 -0400</lastBuildDate>
        <generator>Phorum 5.2.23</generator>
        <item>
            <guid>https://reprap.org/forum/read.php?1,686792,686803#msg-686803</guid>
            <title>Re: DC SSR to Replace Heated Bed Circuit?</title>
            <link>https://reprap.org/forum/read.php?1,686792,686803#msg-686803</link>
            <description><![CDATA[ ... yes, you can change pin definition -- look into the file "pins.h"<br />
<br />
I've driven one of my heated beds with an AC-SSR and power from a 12V transformer (what gives rougly 16VAC) without problems ...]]></description>
            <dc:creator>VDX</dc:creator>
            <category>General</category>
            <pubDate>Thu, 14 Jul 2016 15:12:17 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?1,686792,686792#msg-686792</guid>
            <title>DC SSR to Replace Heated Bed Circuit?</title>
            <link>https://reprap.org/forum/read.php?1,686792,686792#msg-686792</link>
            <description><![CDATA[ I've had my printer for over a year and the other day thermal runaway tripped on the heated bed. I took a look around and saw my connector had melted down (<a href="https://drive.google.com/open?id=0B97Rv2Om-BJfUHpHY29VbWRhcUE" target="_blank"  rel="nofollow">Picture</a>). <br />
<br />
Is it possible to alter pins.h of Marlin to use a spare pin that to trigger a DC SSR with a heatsink (<a href="https://www.amazon.com/uxcell%C2%AE-Soild-SSR-25-3-32VDC-5-200VDC/dp/B019132CY8/ref=sr_1_1?ie=UTF8&amp;qid=1468520622&amp;sr=8-1&amp;keywords=dc+ssr" target="_blank"  rel="nofollow">Link</a>) connected to a typical PCB heater? Or would it be better to replace the whole ramps board?<br />
<br />
Thanks in Advance]]></description>
            <dc:creator>gmckee</dc:creator>
            <category>General</category>
            <pubDate>Thu, 14 Jul 2016 14:26:05 -0400</pubDate>
        </item>
    </channel>
</rss>
