Topics created by Neotko

@doctrucker said in Adjust temperature from one printer to another:

Out of interest what is the margin of error introduced by the duet components when reading PT100, PT1000, and the standard thermistors at around 200-250C?

Using a 4-wire PT100 connection, the error introduced by the Duet components at those temperatures should be no more than 0.5C for the MAX31865 chip plus another 0.5C for the reference resistor tolerance.

Using a PT1000, the maximum error will be greater. On the Duet WiFi/Ethernet it could in theory be as much as +/-18C because of ADC gain and offset errors, but in practice it seems to be much better than that - I have always seen better than +/-2C in my tests. The Duet Maestro is better optimised to use PT1000 sensors and it should generally be accurate to within about +/-2C.

You can test the accuracy by substituting 0.1% tolerance fixed resistors for the sensor and using a PT100 or PT1000 resistance/temperature table to see what the reading should be.

@dc42:

If the same message keeps appearing, that usually means that you had another device connected to the Duet via the network and you didn't disconnect it before turning it off.

Anyhow it could be interesting (for me XD) to have this removable for future options. On the iPhone is quite annoying to just change the fan since it’s at the end of the screen, you change, pops, then you need to wait or press the x, then you can finally adjust the fan then it pops…

I think is nice to have a last print status with print time etc (really nice btw) but also I would be ok with this info not popping up and just staying on the gcode console log. Or just one option to choose? Not mission critical indeed hahahaha anyway thanks! Duet3D rocks!

Ahh ofc M117. That should work! With a series txt and some nice order it might just work. Thanks! Will start macro in it.

One thing I should mention for the benefit of future users. When the new Duet WiFi 1.02 boards arrive, they will have flyback diodes to V_FAN included. Then you will need to ensure that V_FAN is the highest voltage that any fan will be connected to. So your scheme of setting the V_FAN jumper to VIN connecting a fan between +5V and a PWM FAN- output would still work. But the reverse scheme of setting V_FAN to 5V and connecting a fan between +12V or +24V and a PWM FAN- output would not.

Thanks!!

@EDH:

Do you have a working config file for the UM? and do you want to share it.

I do, for umo+ and um2. I'm preparing a basic manual for the whole setup. Also this weekend I want to make a short video showing how to use a molex kk male 4 pins to install the pt100 without cutting the original cable plug.

Basically I'm on it. I have share on twitter with other doing the same and indeed I'll share the whole process.

The thing that did slow me down is that to mimic the um2 calibration I need to make a fake gcode macro sequence assisted by the user.

As you can see I want to cover not just umo+ but um2. But the umo non plus, that should be more or less alike, except the heat sensors setup, but that shouldn't be too hard.