Maximum number of hot ends for RAMPS What are the maximum number of hot end heater cartridge+thermistor pairs that can be run using RAMPS? Can the bed heating ports also be used for a cartridge+thermistor pair? https://reprap.org/forum/read.php?1,636086,636086#msg-636086 Sat, 13 Jun 2026 10:58:52 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,636086,650873#msg-650873 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,650873#msg-650873
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gmh39
Not to get too off-topic, but can you do a master/slave set-up with a RAMPS? I know you can for a Melzi, but I've never seen it done for a RAMPS.
Yes you can. I use I2c in a master/slave set up. I am using a mini pro as a slave to run a set of servo's for a project I am working on.]]> cat.farmer General Sun, 10 Apr 2016 21:10:17 -0400 https://reprap.org/forum/read.php?1,636086,650870#msg-650870 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,650870#msg-650870
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Letaw
I have 4 extruder 4x( stepper, therm, heater) and bed. Add in aux2, aux1.

What do you mean by "Add in aux2, aux1" ?]]> Eddiie General Sun, 10 Apr 2016 20:32:08 -0400 https://reprap.org/forum/read.php?1,636086,641808#msg-641808 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,641808#msg-641808 Letaw General Sat, 19 Mar 2016 14:28:59 -0400 https://reprap.org/forum/read.php?1,636086,636542#msg-636542 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,636542#msg-636542 gmh39 General Mon, 07 Mar 2016 10:44:46 -0500 https://reprap.org/forum/read.php?1,636086,636354#msg-636354 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,636354#msg-636354 Pawan General Mon, 07 Mar 2016 03:20:05 -0500 https://reprap.org/forum/read.php?1,636086,636131#msg-636131 Re: Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,636131#msg-636131 gmckee General Sun, 06 Mar 2016 14:31:39 -0500 https://reprap.org/forum/read.php?1,636086,636086#msg-636086 Maximum number of hot ends for RAMPS https://reprap.org/forum/read.php?1,636086,636086#msg-636086 Pawan General Sun, 06 Mar 2016 12:35:28 -0500