So, after two years of saving my pennies, matching parts, and spending an hour a month assembling, I am within striking distance of getting my first 3d up and running. (a Mendel i2, Arduino Mega2650, RAMPS 1.4, Marlin) Last week, I finished the general assembly, and started running through the paces, testing everything to get ready for a test print. The LCD is up, SD card reading, and rotary control is registering. Also, the X, Y, and Z axies are all working beautifully. However, I can't seem get get any life out of E0. I started troubleshooting by swinging the motor cable over to X. It works perfectly, so I know the motor and wiring are bang on. Next, I tried swapping the A4988s between the E0 and X channels. X still running strong, and no life on E0. This leaves me at either a bad E0 channel on the board, or a program error. I am completely willing to believe a programing error, as I have hit a few bugs in setting this up that were the result of either my not knowing where settings lived, or Marlin having a bug or two of its own. However, if it's a bad E0 channel, I can chase code all day and get no where. I wasn't seeing anything quite like this in the threads, so here I am, looking to the pros. Question 1: Has anyone seen this particular issue before. Question 2: If not, is there a way that I can change my set up to try using E1, instead of E0? This would help me test the code vs. hardware dilema. Thanks in advance, everyone. https://reprap.org/forum/read.php?219,554433,554433#msg-554433 Thu, 13 Aug 2026 20:43:54 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,554433,554765#msg-554765 https://reprap.org/forum/read.php?219,554433,554765#msg-554765
Ok, I feel stupid. On the plus side, I just picked up a roll of ABS and a roll of PETG, to play around with.
Guess I'll just load one up and hit "Go."

Thanks for the sanity check.


EDIT: Yup. As soon as I brought the temp up, the extruder started working. Thanks again.]]> BlackDragon RAMPS Electronics Sun, 06 Sep 2015 14:54:08 -0400 https://reprap.org/forum/read.php?219,554433,554465#msg-554465 https://reprap.org/forum/read.php?219,554433,554465#msg-554465 If you are the firmware prevents the extruder from running.
For testing with no fillament in the extruder send command M302 to the printer .
This allows cold extrusion
You should then be able to run the extruder.]]> george4657 RAMPS Electronics Sat, 05 Sep 2015 19:01:59 -0400 https://reprap.org/forum/read.php?219,554433,554433#msg-554433 https://reprap.org/forum/read.php?219,554433,554433#msg-554433
Last week, I finished the general assembly, and started running through the paces, testing everything to get ready for a test print. The LCD is up, SD card reading, and rotary control is registering. Also, the X, Y, and Z axies are all working beautifully. However, I can't seem get get any life out of E0.

I started troubleshooting by swinging the motor cable over to X. It works perfectly, so I know the motor and wiring are bang on.
Next, I tried swapping the A4988s between the E0 and X channels. X still running strong, and no life on E0.

This leaves me at either a bad E0 channel on the board, or a program error.

I am completely willing to believe a programing error, as I have hit a few bugs in setting this up that were the result of either my not knowing where settings lived, or Marlin having a bug or two of its own. However, if it's a bad E0 channel, I can chase code all day and get no where.

I wasn't seeing anything quite like this in the threads, so here I am, looking to the pros.
Question 1: Has anyone seen this particular issue before.
Question 2: If not, is there a way that I can change my set up to try using E1, instead of E0? This would help me test the code vs. hardware dilema.

Thanks in advance, everyone.]]> BlackDragon RAMPS Electronics Sat, 05 Sep 2015 17:07:49 -0400