Hi. I got a full control circuit working today, driving one of my steppers (nema 23) with a version1.2 stepper card. I noticed that the motor started to warm very quickly, even after adjusting the current with the trimpot. Is this normal? https://reprap.org/forum/read.php?13,24160,24160#msg-24160 Thu, 05 Mar 2026 18:56:12 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?13,24160,24583#msg-24583 https://reprap.org/forum/read.php?13,24160,24583#msg-24583 nophead Controllers Sun, 28 Jun 2009 04:38:15 -0400 https://reprap.org/forum/read.php?13,24160,24581#msg-24581 https://reprap.org/forum/read.php?13,24160,24581#msg-24581 Grogyan Controllers Sun, 28 Jun 2009 04:22:17 -0400 https://reprap.org/forum/read.php?13,24160,24226#msg-24226 https://reprap.org/forum/read.php?13,24160,24226#msg-24226
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This only stops them heating up when they are not moving.

To keep them cool when moving you could pop a small plastic fan blade on unused second drive shaft maybe an old CPU fan blade would do.

Mine seem ok with the first fix using the stepper enable pin.]]> BodgeIt Controllers Mon, 15 Jun 2009 15:30:21 -0400 https://reprap.org/forum/read.php?13,24160,24193#msg-24193 https://reprap.org/forum/read.php?13,24160,24193#msg-24193
Wade]]> Wade Controllers Sat, 13 Jun 2009 23:04:40 -0400 https://reprap.org/forum/read.php?13,24160,24160#msg-24160 https://reprap.org/forum/read.php?13,24160,24160#msg-24160 liav Controllers Fri, 12 Jun 2009 01:50:18 -0400