Works like a charm!
For anyone that want to use this, put this in your macro:
*while sensors.analog[2].lastReading < 50
G4 S1
M99*
And your startup script:
*M98 P"0:/macros/Chamber temp/chamber_temp_50.g"*
And of course name it to what you want and set the correct sensor number and temperature. And be sure to use RRF 3.01-RC4 or later.
Thank you for your help.
/Christian
@dc42
Turns out I don't have a Start.g in the file system. ... and the cancel.g is just a bunch of HTML? Just got a load of errors when canceling the job.
Strange because I just flashed the Duet a week ago. Think I need to go over the file system.
Is the Start.g supposed to be in the system folder?
@dc42
Damn! You are so fast at answering in the forum! 
I just love it!
Ahh, so the start.g would be a better place to set the macro then. I will try that.
Thanks.
Okay, so I think the error is not in Duet.
I was trying to start the print from my Repetier Server attached to the Duet. Seems like there is something getting wrong in the fransfer.
I think it removes the colon and maybe the quotes?
When I upload the G-code directly to the duet, it runs fine. 
I hope I just missed something here.
I have made a macro for the start of the print.
; Ready printer and calibrate bed
M83 ; Set extruder to relative moves
G21 ; set mm units
G90 ; set absolute coordinates
G28 ; Home Machine
M561 ; Clear any bed transform
G1 X140 Y117 F8000 ; Go to center of bed
G1 Z10 F8000 ; Go to 10mm over bed
G30 ; Probe bed and set Z-height
G29 ; Run mesh compensation
M593 F80. ; Set Dynamic Acceleration Adjustment to 80Hz
; Extrude anchor
M703 ; Set filament parameters
G1 X0 Y0 F5000 ; Go to home origo
G92 E0. ; Zero exreuder
G1 Z0.6 ; Move nossle down
G1 E45. F500 ; Extrude anchor
G92 E0. ; Zero extruder
G1 E-1.3 F25 ; Retract filament
G1 Z10.0 F300 ; Move platform down 5mm
G1 Y20. F3000 ; Move away from the anchor
M99 ; Go back to main program
Wen I run this in console, the macro starts.
M98 P"0:/macros/start_of_print.g"
But when I have the same command in a program:
....
G90
M83
M106 S0
M140 S60
M190 S60
M104 S215 T0
M109 S215 T0
M98 P"0:/macros/start_of_print.g"
; process Process1
; layer 1, Z = 0.300
T0
; feature skirt
; tool H0.300 W0.480
G1 Z0.300 F120
.....
The duet returns:
Warning: Macro file 0 /macros/start_of_print.g not found
Any ideas?
Board: Duet WiFi 1.02 or later
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.01-RC4 (2020-03-16b1)
Duet WiFi Server Version: 1.23
Works like a charm!
For anyone that want to use this, put this in your macro:
*while sensors.analog[2].lastReading < 50
G4 S1
M99*
And your startup script:
*M98 P"0:/macros/Chamber temp/chamber_temp_50.g"*
And of course name it to what you want and set the correct sensor number and temperature. And be sure to use RRF 3.01-RC4 or later.
Thank you for your help.
/Christian
@dc42
Yes I was using this:
M308 S2 P"e1temp" Y"thermistor" T100000 B4725 C7.06e-8 A"Chamber"
But couldnt figure out how to use it. Wasn't aware of the ability to use logic code.
Thanks!
@bearer
Interresting. Sound like the way to go when you read the description. I will try that.
@Phaedrux
I use RRF3 and was just trying to use as a independent probe. But I haven't found how to use it in the way I want.
Maybe it's easier to do like you said, and make the bed the heater at startup and then switch it over. I'm only going to use it for ABS and such, so scripting it to a specific temp in each profile is not a bad idea.
Hello everybody.
I want to have control of the chamber temp but not sure yet that I want a chamber heater.
Is there a way to get the printer to wait for a chamber temp without using a chamber heater, just the heated bed?
I just get a fault trying M191 because it wants a heater as well.
Any ideas?
Thank you!
/Christian