I should mention that my issue was resolved with a RAMBO board swap, hopefully our experience will help the MakerGear team to identify the issue that Q*bert & I were experiencing. I'm back in action, looking forward to start experimenting with dissolvable support materials (HIPS) & the 2nd extruder!...

I think that you're talking about this campaign https://www.kickstarter.com/projects/1222995568/rapy-the-worlds-first-dc-motor-3d-printer huh, i see. interesting mod. i saw a printer on kickstarter about 6 mos ago and it used servo motors. i dont know what ever happened to it or if it got funded or ...

Josh,

I'm working from home today. I'll be available if you would like me to run any, tests, push firmware, identify cables...

-Brett

I'm having the same issue, only one of the extruders will work. It looks like either extruder that I plug into E1 will not function, I've switched the wires to verify that it's not a mechanical problem with the extruder, both function on E0. I've pulled all the wires out & installed again, same resu...

Josh, I've made your suggest changes & have changed #define E1_MS2_PIN 64 to #define E1_MS2_PIN 4. Connecting with S3D worked fine, I'm now heating up to see if I can print. -Brett Attempting connection at /dev/cu.usbmodemfd141... RECEIVED: ø4Šµ‚——k<ž»£}¾$ÐqÔ&Ø<è¼“Ô RECEIVED: echo: External Reset ...

I was able to set mine higher then M350 S2 & am still getting good readings from my thermistors. I'm assuming that 'M350 S16' would be the normal setting for a Rambo 1.2d board, correct? Looks like I'm still having issues, I'm still not able to print. Let me know if I should run any additional tests...

One possibly useful test - could either of you try using the same firmware as a single, with "#define EXTRUDERS" set to 1 in Configuration.h (line 65)? Josh, I just ran that test for you, there was unfortunately no improvement. Let me know if you'd like me to run any other tests, I'll be available ...

I have the Rambo 1.2d, this was the same board that had the issue with static electricity when running off of a laptop.

I'd reported the exact same issue http://forum.makergear.com/viewtopic.php?f=13&t=755&start=90#p4452. It looks like we've both done the same trouble shooting, let me know if you resolve the issue. -Brett I installed the dual extruder upgrade (very well made, BTW) and I'm encountering the following p...

I'm done. Everything is heating but no fans are coming on. I expected the Rambo fan and extruder fan to come on but no go. Checked the extruder offset. Was returned as 31.1 so I think the marlin was loaded correctly Check to see if you are connecting the fans to the correct wiring harness, only the...