Firmware 2.0RC2b/1.21.1 RC2b released

dc42

Thanks to all of you who have provide feedback on RC2B. I'm looking to fix a few old bugs before the 2.0 release, so there will probably be a RC3 next week.

Dr_Ju_Ju

I've now had a chance to swap Heater 1 for Heater 2, which has appeared to have fixed my issue with heater crashing & failing print, but it does mean the a board I bought in early January has problems (when I got the board, there were unsoldered joints !!).

One issues I have with this is that the Web interface works as expected, but the PanelDue still shows a "phantom" heater H1, with Current\Active\Standby boxes as well as the re-mapped heater as expected.

dc42

@dr_ju_ju said in Firmware 2.0RC2b/1.21.1 RC2b released:

I've now had a chance to swap Heater 1 for Heater 2, which has appeared to have fixed my issue with heater crashing & failing print, but it does mean the a board I bought in early January has problems (when I got the board, there were unsoldered joints !!).

If you believe your Duet was delivered and still is faulty, please ask for it to be replaced under warranty.

otaku521

This post is deleted!

Dr_Ju_Ju

@dc42 I've flipped it back to H1, & started a long'ish print, just to confirm that it still fails. If it does, I'll request a replacement, but at least it looks like the wiring & cartridge etc. are all ok

Dr_Ju_Ju

I "may" have found my issue, as although I have an 80mm fan mounted under the duet board, and its enabled with:
M106 P2 S0.5 T55 H100:101:102 ; Set fan 2 (Duet Board) to come on half power if any driver chip reaches 55 degrees
it has not been coming on with this firmware ?? and some of the ic's including the heater power mosfet have been getting very hot to the touch.

It used to work fine with the release firmware, but I don't know if anything has changed ??

As I'm in the middle of a long print, for a stop-gap I've carefully sat a 40mm fan on top of the wiring from the drivers, driven from one of the "always on fans", which is keeping everything cool.

I'll investigate further when the print completes (hopefully).

4lathe

I upgraded to the latest firmwareand dwc and all has gone perfectly except for fan sliders. Using chrome, always say all my fans in the web interface. Now only Tool Fan shows. I read somewhere about a similar problem but can’t find it now. This same phenomenon occurs on both my printers and with a mac and a windows pc.

r123

Is there a post somewhere explaining the virtues of an RTOS-based firmware? For developer and end-user alike?

dc42

@dr_ju_ju said in Firmware 2.0RC2b/1.21.1 RC2b released:

I "may" have found my issue, as although I have an 80mm fan mounted under the duet board, and its enabled with:
M106 P2 S0.5 T55 H100:101:102 ; Set fan 2 (Duet Board) to come on half power if any driver chip reaches 55 degrees
it has not been coming on with this firmware ?? and some of the ic's including the heater power mosfet have been getting very hot to the touch.

It used to work fine with the release firmware, but I don't know if anything has changed ??

As I'm in the middle of a long print, for a stop-gap I've carefully sat a 40mm fan on top of the wiring from the drivers, driven from one of the "always on fans", which is keeping everything cool.

I'll investigate further when the print completes (hopefully).

The drivers don't actually report their temperatures, they report an over temperature warning if they exceed a threshold that is in the region of ~~120C~~ 100C. In bench testing this happened quite quickly with 3 driver's running at 2.4A if idle current reduction was not allowed to take place and there was no fan cooling, but not at all if the current was reduced to 2.0A.

4lathe

David, is this a 2.0 behavior change or a 1.21.1 rc4 issue?

dc42

There is no intended behaviour change from earlier firmwares in this respect.

Dr_Ju_Ju

Then I'm surprised it isn't working as I set it, as I've not changed any motor currents etc. so I would still expect to see\feel that the fan is working, but patently it isn't.

dc42

What motor currents are you using?

Dr_Ju_Ju

M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z180 E1200 ; Set maximum speeds (mm/min)
M201 X500 Y500 Z250 E250 ; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E1100 I50 ; Set motor currents (mA) and motor idle factor in per cent
M84 S90 ; Set idle timeout

dc42

At 1A the stepper drivers won't get hot enough to trigger the thermal warning. See my earlier reply.

Dr_Ju_Ju

I unstand what you are saying, so unless I drive the motors above their normal operating currents, then the fan will never come on.

But according to the datasheet (https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2660_datasheet.pdf) section 11.3, a flag is set when the chip reaches 100 degrees (OTPW), is this not trapped, so that external cooling can be applied ??

Granted this is not optimal, but as there is no local temperature probe, its all that's available to monitor the temperature of the Duet board, and effect some forced cooling.

whosrdaddy

@dr_ju_ju : the board does a such a good job dissipating the heat of the drivers that 1A is not enough to overheat the drivers, hence it won't trip the flag...

ShadowX

Just lower the temperature threshold or have the fan be connected to an "always on" connection. Case closed. Next subject.

r123

@r123 said in Firmware 2.0RC2b/1.21.1 RC2b released:

Is there a post somewhere explaining the virtues of an RTOS-based firmware? For developer and end-user alike?

@r123 nobody knows?

dc42

@dr_ju_ju said in Firmware 2.0RC2b/1.21.1 RC2b released:

I unstand what you are saying, so unless I drive the motors above their normal operating currents, then the fan will never come on.

But according to the datasheet (https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2660_datasheet.pdf) section 11.3, a flag is set when the chip reaches 100 degrees (OTPW), is this not trapped, so that external cooling can be applied ??

Granted this is not optimal, but as there is no local temperature probe, its all that's available to monitor the temperature of the Duet board, and effect some forced cooling.

Yes that's the over temperature warning flag that we monitor as I described in my earlier reply. You need more than 2A motor current to set it off.