hello after checking my wiring for issues i changed the PWM for the bed heater its at .10 now from 1.0 and auto tuning now, i think i will have to have a play around with it and get it just nice many thanks for your help everyone i really appreciate it and im proud to be part of the community, your replies are so quick, excellent! no doubt i will be back with another problem until then thanks jase
Latest posts made by Threefaze
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RE: PT100 sensor problem? or settings maybe?
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RE: PT100 sensor problem? or settings maybe?
@Threefaze also it reads the correct resistance at the connector for the pt100 at the duet end the bed is connected to ssr from e3d I think it's 10amp omeron I wanted to get somthing a bit better than the fotek ssr I've had faulty fake ones in the past.
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RE: PT100 sensor problem? or settings maybe?
Hello dc42, the pt100 is inside the heat pad and the psu negative and bed plate are connected as you describe. ive spent that much on this project everyone is having somthing 3d printed this christmas thanks jase
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RE: PT100 sensor problem? or settings maybe?
as you can see it gives the correct temp
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RE: PT100 sensor problem? or settings maybe?
this is my daughter board and here is my config,
; Heaters
M308 S0 P"spi.cs1" Y"rtdmax31865" ; configure sensor 0 as thermocouple via CS pin spi.cs1
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M307 H0 B0 S1.00 ; disable bang-bang mode for the nozzle heater and set PWM limit
M308 S1 P"spi.cs2" Y"rtdmax31865" ; configure sensor 1 as thermocouple via CS pin spi.cs2
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M307 H1 B0 S1.00 ; disable bang-bang mode for the nozzle heater and set PWM limitthanks for taking the time dougal1957
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RE: PT100 sensor problem? or settings maybe?
Hello aider, am i missing somthing? i have been through the link you have posted 3 times could you point out what i have missed thanks jase.
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PT100 sensor problem? or settings maybe?
Hello everyone, i have been away for a while and not touched my printer, i have come to wire up my heated bed and ended up with.
Error: Temperature reading fault on heater 0: sensor short to other wiring.
so out comes the multimeter i can confirm there is no short and i measured the resistance and it reads around what it should on the meter, 107.8ohms at 20degrees using the pt100 resistance/temp chart below.
have also checked all wiring on the duet and duex5 and they are lookig good, i was having problems with switching the relay on to control my heated bed (its240v), found the heated bed output on the duet had a bad solder point so fixed this then the relay light was coming on and thought i had cracked it until this error message come up, when you activate the heater the light on the duet comes on the relay light comes on but the temp shoots to 2000c and shuts off to then return to showing normal temps of 20.8c confirming my plate is this temp with my thermal image cam, i have been through quite a few forums and cant seem to find an answer to this, ive tried auto tune and get.
Error: Temperature reading fault on heater 0: sensor short to other wiring
Auto tune phase 1, heater on
M303 H0 S90
Auto tuning heater 0 using target temperature 90.0°C and PWM 1.00 - do not leave printer unattendedthen decided to try M307 H0 and got.
M307 H0
Heater 0 model: gain 340.0, time constant 140.0, dead time 5.5, max PWM 1.00, calibration voltage 0.0, mode PID
Computed PID parameters for setpoint change: P13.4, I0.482, D51.4
Computed PID parameters for load change: P13.4, I0.949, D51.4i used the online config tool to initially set my duet up thinking wow this will be a piece of cake haha wrong had to play around with my motors to get it moving the way i wanted (corexy), soooo i have the bed and the print head needs soldering up and its done i can try and get a print going and after its printing right will have a go at this bed leveling with independent motors just need to get over this hurdle can any of you good folk help me out many thanks jase.
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RE: CoreyXY with one z motor 3 separate bed leveling motors.
i really hope so phaedrux it would be great if it can be done with macros, the 3 bed motors have 10mm travel each and they are mounted in a way that they can flex and move freely, I'm thinking if i dial it in as best as i can then the bed can do the rest to get it super level, also maybe around 1mm movement for the motors to do there thing, i think haha.
veti I've got 2 types of belt and pulleys to play with, T2.5 polyurethane and T2 standard black and its super easy to change ive made a system on the print head where you have 4 m5 bolts that draw in the belt and tension it then just lock them off, really hoping the bed leveling can be achieved.
mrehorstdmd this is something i put quite a bit of thought into oscillation I've got some guides made to run on the front of the bed with some v xtreme wheels to run in the extrusion i will have to take a picture and show you see what you think, planning on having them made of aluminium, i could mount a piece of extrusion behind the bed and run the wheel system there that's my backup plan , the screws are slotted into the bed, in the pictures i previously posted there are some silver m5 bolts poked in they are just to hold the bed in place while i was measuring , on the slotted ones they just have ceramic washers and nylock nut on the underside, as just mentioned to veti I've got 2 types of belt and pulleys and are quite easy to change but will take both of yours advise and use the standard belts when its up and running.
so in summery it is possible to run this bizzare setup
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RE: CoreyXY with one z motor 3 separate bed leveling motors.
ok I've just resized them lets try again.
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RE: CoreyXY with one z motor 3 separate bed leveling motors.
is there a file type and size i should use, i have just tried to upload some jpegs but there was an error file too large thanks jase.