Hi All, new to the community today. Great to be here and still time to say Merry Christmas. I received a Prusa i3 for Christmas - fitted down the chimney with a little help - and I have completed assembly but I have a problem with the cable colour coding for the Stepper motors. The cables at the Stepper end are of the cable in this order: blue - red - green - black But at the other end are: blue - green - red - black i.e the red and green are switched Should I switch the inner two ? [attachment 45868 IMG_13573.jpg] Thanks https://reprap.org/forum/read.php?4,447940,447940#msg-447940 Sat, 12 Sep 2026 21:34:45 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,447940,448408#msg-448408 https://reprap.org/forum/read.php?4,447940,448408#msg-448408 SteveK Reprappers Sun, 28 Dec 2014 12:34:00 -0500 https://reprap.org/forum/read.php?4,447940,448376#msg-448376 https://reprap.org/forum/read.php?4,447940,448376#msg-448376
Its the same as mine.

1st cable paired with 3rd and 2nd with 4th]]> pushthatbolder Reprappers Sun, 28 Dec 2014 10:51:23 -0500 https://reprap.org/forum/read.php?4,447940,448189#msg-448189 https://reprap.org/forum/read.php?4,447940,448189#msg-448189












pron]]> jrcaster Reprappers Sat, 27 Dec 2014 17:43:06 -0500 https://reprap.org/forum/read.php?4,447940,448122#msg-448122 https://reprap.org/forum/read.php?4,447940,448122#msg-448122 At the stepper end the two inside wires are a loop and the two outside wires are a loop.
At the board end they are side by side loops. So that's why the two inner wires are switched - to match the board.

I found a note in the documentation that says to only follow the black cable and the other s will be correct.

However I have now connected everything up but when I power up all i get is a slowly flashing LCD with no content. If I plug in an SD card then the flashing slows.

This is a Prusa i3 Hephestos which I believe comes with firmware installed and configured. There is no documentation for software installation other than for upgrading new firmware. i.e. not as part of initial assembly.

Any ideas on this ? I don't imagine that the stepper connections should affect the start up ??

Thanks again
Steve]]> SteveK Reprappers Sat, 27 Dec 2014 14:58:32 -0500 https://reprap.org/forum/read.php?4,447940,448059#msg-448059 https://reprap.org/forum/read.php?4,447940,448059#msg-448059 jrcaster Reprappers Sat, 27 Dec 2014 12:34:56 -0500 https://reprap.org/forum/read.php?4,447940,447940#msg-447940 https://reprap.org/forum/read.php?4,447940,447940#msg-447940
I received a Prusa i3 for Christmas - fitted down the chimney with a little help - and I have completed assembly but I have a problem with the cable colour coding for the Stepper motors.

The cables at the Stepper end are of the cable in this order:

blue - red - green - black

But at the other end are:

blue - green - red - black i.e the red and green are switched


Should I switch the inner two ?

[attachment 45868 IMG_13573.jpg]
Thanks]]> SteveK Reprappers Sat, 27 Dec 2014 05:34:28 -0500