Hi there I changed hotends with prusa mk2 and wanted to do M303 to pid tune it... Since movement of temp is preety unevenly (see jpg), i tried multiple cycles of pid autotune to get best results out of it: M303 C30 S280 After pid autotune is finished (but looks like only 5 cycles are done) - i however get one of two errors: Error:Line Number is not Last Line Number+1, Last Line:108 Resent: 109 (numbers may wary) or Error: checksum mismatch, Last Line:42 Resend:43 (numbers may wary) I tried with nopheads latest firmware, wo/ changes (besides hotend related: TEMP_SENSOR_0 1; HEATER_?_MAXTEMP 325;)... And with eeprom enabled on that. Same thing. Ideas? pic1 pic2 https://reprap.org/forum/read.php?292,287103,287103#msg-287103 Thu, 15 Oct 2026 06:49:12 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,287103,287134#msg-287134 https://reprap.org/forum/read.php?292,287103,287134#msg-287134 Just tried in Pronterface and it works without a problem.
Now the only question remains - why do i only get three sets of PID numbers out ? no matter whether I choose C30 C15 or C6 ... it only seems to do three cycles?]]> weirdgod Mendel90 Tue, 31 Dec 2013 09:20:34 -0500 https://reprap.org/forum/read.php?292,287103,287103#msg-287103 https://reprap.org/forum/read.php?292,287103,287103#msg-287103

I changed hotends with prusa mk2 and wanted to do M303 to pid tune it...
Since movement of temp is preety unevenly (see jpg), i tried multiple cycles of pid autotune to get best results out of it:
M303 C30 S280

After pid autotune is finished (but looks like only 5 cycles are done) - i however get one of two errors:

Error:Line Number is not Last Line Number+1, Last Line:108
Resent: 109
(numbers may wary)

or

Error: checksum mismatch, Last Line:42
Resend:43
(numbers may wary)

I tried with nopheads latest firmware, wo/ changes (besides hotend related: TEMP_SENSOR_0 1; HEATER_?_MAXTEMP 325;)...

And with eeprom enabled on that.
Same thing.

Ideas?

pic1
pic2]]> weirdgod Mendel90 Tue, 31 Dec 2013 08:04:58 -0500