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pid_autotune [2016/08/03 06:02]
127.0.0.1 external edit
pid_autotune [2018/01/30 18:35] (current)
Matthew Upp
Line 1: Line 1:
-===== PID Autotune ===== +~~NOTOC~~ 
-(See notes at bottom)+====== PID Autotune ======
  
-**Use Ethan Anderson'​s PID settings for now.** ​ [[PID Tuning|PID Tuning]]+----
  
-M303 PID Autotune should be working (not very well though) in the latest firmware which is 18.37 (1.8)+//See [[g-code#​sending_g-code|Sending G-code]] for more information on how to send the commands below.//
  
-"Note: Firmware 1.7 and below may cause reset upon M303 command. Update firmware will solve this bug."​ +//PID Autotune ​with cycle support working ​for Motion firmware V22+//
-M303 S190 Autotune ​PID value for extruder at 190C.\\ +
-M301 Manually set PID parameters P I and D.\\ +
-M500 Save parameters to eeprom.+
  
  
-Source: http://​wiki.malyansys.com/doku.php?​id=tune_pid+===== M303 Run PID tuning ===== 
 + 
 +---- 
 + 
 +==== Hot end usage ==== 
 +<​code>​ 
 +M303 S<​temperature>​ C<#​cycles>​ 
 + 
 +Example: 
 +M106 S204 ; turn on hotend fan to 80% 
 +M303 S210 C15 
 +M500 ; save the generated PID values to EEPROM 
 +</​code>​ 
 + 
 +<wrap hi>//​Note:​ Change the temperature (S value) to the temperature you anticipate using.//</​wrap>​ \\ 
 +The above command will heat the nozzle and cycle around the target temperature 15 times (C15) at the given temperature (S210) and return the average values for P, I, and D. \\ 
 +Proceed to  
 +[[pid_autotune#​m301_set_pid_parameters|M301 Set PID parameters]] below 
 + 
 +**Bed usage** 
 +<​code>​ 
 +M303 E-1 S<​temperature>​ C<#​cycle>​ 
 + 
 +Example: 
 +M303 E-1 S60 C5 
 +</​code>​ 
 +\\ 
 + 
 +---- 
 + 
 +==== M301 Set PID parameters ==== 
 +Enter the values received after running [[pid_autotune#​m303_run_pid_tuning|M303]] using M301 command \\ 
 +<wrap hi>Newer firmware versions set the PID values returned by Autotune automatically. \\ 
 +The users must store the values to EEPROM with command "​**M500**"</​wrap>​ \\ 
 +<​code>​ 
 +M301 P<Kp value> I<Ki value> D<Kd value> 
 + 
 +Example: 
 +M301 P20 I0.02 D250   ;Set new PID values 
 +M500                  ;Save EEPROM 
 +Reboot printer to complete the process 
 +</​code>​ 
 + 
 + 
 +==== M304 Set PID parameters - Bed ==== 
 +Enter the values received after running [[pid_autotune#​m303_run_pid_tuning|M303]] using M304 command 
 +<​code>​ 
 +M304 P<Kp value> I<Ki value> D<Kd value> 
 + 
 +Example: 
 +M304 P10 I0.02 D305.4 ​ ;Set new PID values 
 +M500                   ;Save EEPROM 
 +Reboot printer to complete the process 
 +</​code>​ 
 + 
 + 
 +**References** \\ 
 +[[http://reprap.org/wiki/​PID_Tuning]] \\ 
 +[[http://​reprap.org/​wiki/​G-code#​M303:​_Run_PID_tuning]] \\ 
 +[[http://​reprap.org/wiki/​G-code#​M301:​_Set_PID_parameters]] \\ 
 +[[http://​reprap.org/​wiki/​G-code#​M304:​_Set_PID_parameters_-_Bed]] \\ 
 +\\ 
 + 
 + 
 +-------------------------------------------------------------------------------- 
 +//(The information below applies to Motion firmware 20 & lower)// 
 + 
 + 
 +**Use Ethan Anderson'​s PID settings for Motion firmware version 20 & lower** ​ [[pid_tuning_ea|PID Tuning E. Anderson]] 
 + 
 +Motion Controller Firmware version 18 fixed the lose of connection bug with command M303 (PID Autotune). \\ 
 +Autotune does not work well in version 18 or 20. Version 22 and higher have more accurate default PID values and command M303 returns much better values as long as you run through enough cycles and run it with the temperature you are trying to maintain. 
 + 
 +Note: Motion Controller Firmware version 17 and below, issuing command M303 may cause reset and/or loose connection which will require the printer to be powered off and back on. Motion Controller firmware version 18 fixed this bug. 
 +M303 S190 Autotune PID value for extruder at 190C.\\ 
 +M301 Manually set PID parameters P I and D. \\ 
 +M500 Save parameters to EEPROM.
  
  
-**NOTES:** 
-  * Unordered List ItemPID Autotune cycles is not working yet. The next firmware release should include cycle support for PID Autotune. 
-  * Ethan Anderson'​s PID numbers should also be the default value in the next firmware release. 
pid_autotune.1470204152.txt.gz · Last modified: 2016/09/15 14:40 (external edit)