@DocTrucker Many thanks for your quick response, I'm aware of what you are stating and of course, agree with it, however, I was just wondering since they mentioned that they are drafting the CE guidelines, what the current state of it is.

Also in several posts, they mentioned upcoming changes that would improve certain things which may or may not reduce the required level of protection for the boards in terms of EMC, but then the results of those changes were not communicated anymore.

And of course, duet cannot provide the necessary documentation that would make any machine built with their board automatically pas CE certification, but some updated requirements on these things after the tests / general guidelines would be sweet.

@jay_s_uk

The files was presented in both folders, and both folders seemed to contain all necessary files, making a back up now, and will than put the sd card back in, will let you know in a few minutes.

Max

@MaxGyver

A more dodegy approach would be, to physically attach a speed potentiometer of a stepper driver circuit to a small hobby servo motor, the servo motor could than turn the speed of the stepper motor / peristslt pump, it's a bit dodgy but it works, I have done it before..

@DocTrucker Many thanks for your quick response, I'm aware of what you are stating and of course, agree with it, however, I was just wondering since they mentioned that they are drafting the CE guidelines, what the current state of it is.

Also in several posts, they mentioned upcoming changes that would improve certain things which may or may not reduce the required level of protection for the boards in terms of EMC, but then the results of those changes were not communicated anymore.

And of course, duet cannot provide the necessary documentation that would make any machine built with their board automatically pas CE certification, but some updated requirements on these things after the tests / general guidelines would be sweet.

@dc42 since this post is rather old by now already, what is the current state of the boards also for the Duet 3 mini 5+ wifi with external antenna? And what are the wifi power ratings of the boards?

@chrishamm that indeed did the trick. It also fixed the issue with the order of powering the device. Many thanks.

@chrishamm I've a duet 3 mini 5+

@chrishamm

I've updated to V3.4.6 but the issue persists, I don't think it is my python code as the issue is also there when I do the following:

• plug in USB cable into PC

• open YAT terminal

• send M115 to test for connection, which than responses as intended

• close YAT

• restart laptop

• open YAT terminal

• send M115 to test for connection, no response, while the terminal at the bottom right says that the com port is open and connected

to restore the functionality:

• un plug USB cable
• plug in USB cable
• send M115 to test for connection, which than responses as intended

Could you let me know if by performing this sequence of events, you obtain similar results?

@gloomyandy it's windows 11

Dear Phaedrux @Phaedrux

Sorry for the missing details, I'll explain the scenario more clearly.

I've a thirty party software that uses python to send single line Gcode to the duet over USB, the USB is connected via a USB isolated (adafruit, the recommended one by duet). When I leave my USB plugged into the laptop and I restart the computer, the communication with the Duet stops, for example if I after restarting the PC open the YAT terminal and send something like M115, i get no response.

If i unplug the USB cable and plug it back in, the connection is restored and I can send codes via YAT as usual.

Furthermore, If I power my duet by VIN first and then plug in the USB cable the same behaviour is present as in no communication to duet via programs like YAT. With or without the USB isolator makes no difference (I only test this if my laptop is running on batteries) so the problem is not with the USB isolator.

I've checked and tried to change USB suspend behaviour, but this did not fix the issue.

Is there something else I could try?

Kind regards,

Dear All,

I'm controlling my duet over USB, but i noticed that when I restart my laptop, while the USB is still connected to the duet, that upon start up, the duet is not responding anymore. It than requireres me to unplug the USB and to plug it back in, which is a bit enoying. I also noticed that when i power my duet first from the VIN and than plug in my USB, it is not responding aswell.

I there any way to circumvent this behaviour?

Kind regards

Dear Duet,

I would like to power up my duet (the Vin voltage) over USB. So sending a command that switches a relay so that 24v is now supplied to the board.

How would i go about this, should i use the PS-on and correspond ground next to it to go to the relay and than send M80 over USB to power it on?

Kind regards,