From 58b8d040c38087992a155cc82be73a29ae0ec6b3 Mon Sep 17 00:00:00 2001 From: teachingtechYT Date: Fri, 3 Sep 2021 10:49:20 +1000 Subject: [PATCH] Add part cooling fan instructions to PID auto tune #361 --- calibration.html | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/calibration.html b/calibration.html index 5125a7b..5928099 100644 --- a/calibration.html +++ b/calibration.html @@ -185,7 +185,9 @@

PID autotuning is quick and easy, and relates to the most potentially dangerous components of your 3D printer: the heaters. It makes sense to do it as a first step. This procedure is covered in this video: Two easy fixes for 3D printer temperature swings

In Marlin, this is a very straightforward process using M303.

-

It is not essential, but you may prefer to start this process with the hot end at room temperature. In a terminal, enter the following to tune the hot end:

+

It is recommended to run the tuning with conditions as close to printing as possible. This means filament loaded and the part cooling fan set to your normal speed. This can be done from the printer's interface or in a terminal, by entering the following (this example is 100% fan speed):

+ 
M106 S255
+

It is not essential, but you may prefer to start this process with the hot end at room temperature. To tune the hot end, enter in a terminal:

M303 E0 S200 U1

This will tune the hot end at 200 degrees. The S value can be altered to suit your most common printing temperature. The U1 means the result is stored to RAM and we can save it immediately to EEPROM by sending:

M500