Topics created by Inno 3D

@t3p3tony yes, I saw the solution at the other thread.

Many Thanks @T3P3Tony and @Gixxerfast !!!

This solved my Problem!

@Inno-3D

I use Leadshine D808 stepper drivers and I had a problem of the pulselength of my signals. They required to be a minimum of 5.0 us. Right now you have M569 P* T2.5:2.5:5:5, you could try that. It also recommends that in the manual of your stepper driver: https://www.damencnc.com/userdata/file/1750-1_DM556_datasheet.pdf

When using external stepper drivers, the M305 does not do anything since you use the dipswitches on your driver.

what is your wiring setup, do you have power-sourcing or sinking? I have all my + pins (EN+, DIR+, PUL+) powered on 5V, where I use the - pins for pulses.

Did you check the fuses on your board?

I would really like to see a picture of your printer if possible! I have one of X900 Y1400 Z400 and thought that was already massive!

I also use the expansion breakout board and that gives me 3.3V but using the 5V setup as previously explained, I can change the difference in voltage which makes a switch.

@Inno-3D It's not the steps/mm that are "hard" on the motors. Steppers draw current even when they are standing still to produce holding torque.

And with your current setup motor to produce let's say 1Nm on screw needs to make almost 1.8Nm (due to gearing that speeds up rotation but lowers the output torque)

With gears swapped to make 1Nm on screw, motor needs to make about 0.56Nm (gearing will increase torque, but reduce the speed - which in case of screw drive is limited anyway).

So with current setup motor needs to work about 3x harder in terms of output torque, which require much higher phase currents and generates heat.

@dc42 you are so right!!!

I've set the wrong gear ratio.

Now it's working!!!

Thank you very much!!!

@droftarts said in Pt100 sensor settings Problem:

@Dougal1957 said in Pt100 sensor settings Problem:

You had effectively shorted the sensor which is why you got -273.1 an open gives you the 2000 reading (Normally)

It's the other way around: -273 means open circuit (ie nothing connected, infinite resistance), +2000 means short circuit (ie no resistance, because the jumper was on), because the resistance of a typical 100k thermistor decreases as it gets hotter. The PT100 and PT1000 are different, as the resistance increases as the temperature increases, but (I think) the chip on the daughter board inverts this and sends a reading to the Duet that works in the same direction as regular thermistors.

However, his initial -273 was because the tool was referring to a heater and temperature monitor that wasn't defined.

Ian

Thanks for that Ian I din't know about the inversion in FW I did however know how the PT100 responds to changes in Temperature.

Doug

@mitch Please start a new thread.

@Phaedrux yes you are right!

Now it's working!!!

Many thanks for your help guys I'am so happy that it's working now!

That's right 😉

YEAH many thanks for your help! This solves the problem. Now it's working fine.

Many thanks!