I just bought a new RAMPS 1.6 shield to replace my old RAMPS 1.4 shield. The problem is that it's just not working, the motors don't move, heatbed/nozzle don't get heated. It was all working with the RAMPS 1.4 shield.

I checked the RAMPS 1.6 and there's no bridging in the solder joints.

The DRV8255 is drawing current also but the motor doesn't move.

I am using Repetier Firmware. I tried Marlin (default) and even it's not working.

  • $\begingroup$ Hi! How did it end with your RAMPS board? Did you found the actual reason of mismatch? $\endgroup$
    – octopus8
    Feb 5 '21 at 3:26
  • $\begingroup$ Yes, the RAMPS were defective, I returned them and got a new replacement from Amazon. The new one worked just fine. $\endgroup$ Feb 5 '21 at 8:13

Pins are sometimes different between the two shields. I ran into one a while back... Go over the pin specs for the 1.6 one at a time.

Correction: pins are SUPPOSED to be the same. I've however experienced them not being the same. I don't know if my 1.3s were the oddballs or if the 1.6 was.

  • 1
    $\begingroup$ My RAMPS 1.6 is exactly the same to a RAMPS 1.4, I used the 1.4 pin layout without a problem. The 1.6 is only a hardware upgrade with respect to connectors, fuses and MOSFETs and heatsink. I looked up the original source from the manufacturer, it also refers to RAMPS 1.3/1.4, so, there should be no pin changes. If there were such changes, there should be a separate pins header file for the 1.6, but I cannot find such a file. Please do explain the differences you found, the answer could use some more in depth information. $\endgroup$
    – 0scar
    Sep 7 '20 at 20:31
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    $\begingroup$ As well as the differences, please state the brand/model of the boards, plus a photo if possible. There may be a particular manufacturer who is not adhering to the standard. $\endgroup$
    – Greenonline
    Sep 7 '20 at 21:23
  • $\begingroup$ If I still had the board, I might be able to share. I believe it was around the end of 2018? after running out of 1.3s and still needing one more in a hurry. I just remember not finding a quick pin list and thinking I could have saved myself some trouble of tracing if I had paid attention to the labels on the board. $\endgroup$
    – Abel
    Sep 7 '20 at 21:57

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