Just finished my build. All manual controls works. However, I’m getting a ‘Brown Out Reset’ when I heat up the Extruder. It reaches around 180-185 then the ‘Brown Out Reset’ happens and it stops heating the extruder.
Suggestions?
thanks in advance!
jay
Sorry, we have no experience with this.
Do you get an error message that says ‘Brown out Reset’?
HI all,
Brown out is a term used to say: The voltage is not high enough for proper operation, but not low enough to stop operation completly.
In plain English… your powers supply does not deliver enough power… EXAMPLE: IF proper operation requires 12,5 -11,5 volt… but the electronics can start at 10 Volts… but will stall if when operated… this is a BROWN OUT.
So it seems that either you have a too large load or your power supply is BAD. Disconnect power supply and measure output with no load. If OK then you probably have a partial short somewhere or load to much.
/PGust
We are fully aware what brown out means, thank you 
Anyway, it was not clear to us if you decided that there was a brown out or that the software generated some kind of error message which we had never heard of…
You are correct, this looks like a power supply problem.
Please check the power supply and return it if necessary.
Yes, Repetier’s log states ‘echo: Brown out reset’
However, if I keep pressing the Heat Extruder button (after Brown out reset turns it off) it eventually does get to the temperature and stays there. Takes about 3 to 4 presses. Also, I noticed that if I’m heating the Printbed then the Brown out reset error doesn’t occur as often (still does once in awhile).
I went ahead and tried to build the circuit cover and it built it fine after a few Brown out resets in the beginning. Once it started building, it printed without interruption.
Where is the best places to measure for any shorts? Inefficient voltage?
thanks!
j-
I just got the same message.
The printer would connect to the computer but would not take commands.
I tried resetting the board disconnecting and reconnecting the software that didn’t help.
I then pulled the plug on the power supply and it posted “Brown out reset” in the log.
The printer started to work again.
I have also plugged it into a surge protector and now it’s not working so well.
I will let it finish it’s print job and plug it into the wall or a plain power strip to see if starts to print better.
I’ll let you know.
UPDATE:
I raised the extrusion temperature to 200C for better flow and the ‘Brown out reset’ error has disappeared. Not quite sure how/why this resolved the issue…
j-
Hi,
I am having a similar problem.
Having built the printer with it passing all of the checks, when I try to print the extruder heater goes to off when an “echo: Brown out Reset” message is logged.
I am using Repetier-Host V0.90C running on a Windows 8 laptop that is very happy to talk to the printer over the short USB cable supplied as part of the kit.
Note that there is also an 'echo:Unknown command:"" ’ message in the log below which may be significant.
Do you have any suggestion on what I can do to resolve this issue?
Thanks,
John
16:07:44.714 : Done. Process took 0 minutes and 1.045 seconds
16:07:44.714 : Filament required: 687.2mm (4.9cm3)
16:08:09.550 : echo:Unknown command:""
16:08:09.628 : FIRMWARE_NAME:Marlin V1; Sprinter/grbl mashup FIRMWARE_URL:http://www.K8200.eu - velleman.eu PROTOCOL_VERSION:1.0 MACHINE_TYPE:K8200 - 3D PRINTER EXTRUDER_COUNT:1
16:08:09.643 : echo:Active Extruder: 0
16:11:59.121 : start
16:11:59.121 : echo: Brown out Reset
16:11:59.121 : Marlin 1.0.0
16:11:59.121 : echo: Last Updated: 2013-03-08 | Author: VELLEMAN - GELOEN
16:11:59.121 : echo: Free Memory: 5528 PlannerBufferBytes: 1232
16:11:59.121 : echo:Using Default settings:
16:11:59.699 : FIRMWARE_NAME:Marlin V1; Sprinter/grbl mashup FIRMWARE_URL:http://www.K8200.eu - velleman.eu PROTOCOL_VERSION:1.0 MACHINE_TYPE:K8200 - 3D PRINTER EXTRUDER_COUNT:1
Could you measure the voltage of the PSU when you are starting a print?
The voltage while not printing was just over 15V measured with a DVM. Unfortunately I wont get an opportunity to monitor it during printing until next weekend. My plan is to set up an oscilloscope on the input power and look for drops during printing. Where else would be good points to probe the voltages?
Thanks,
John
I get these (brown out reset messages) during printing/print preparation. Also frequently the comms just stop (after a long series of temp requests and answers). Found this thread and measured the supply voltage. It sometimes drops to just under 13V to stay there for a couple of minutes and then rebounces to ~15.4.
It is possible to reproduce the problem by switching both heaters on in a row in the repetier host manual printer control tab.
Tonight I am planning to try my lab power supply instead though it can handle only 5A max.Measurements indicate thet nominally 4.6A should suffice.
One thing that troubles me is the very irregular behaviour. Sometimes I can keep the comms up for an hour, then it fails for a period within seconds of disconnect and (successfully) reconnecting again. Any ideas?
Kind regards,
Peet
They all sound like bad PSU problems. Check if the problems dissapear when using a lab power supply.
If it is indeed the PSU that is bad you can send it back here (with a description of the problem):
Velleman Repair Service
Legen Heirweg 33
Gavere
Belgium
We will check the PSU and send you a new one ASAP.
I replaced the power supply by my lab (desktop) power supply. This has a limit of 5 A (it’s actually the latest power supply from Velleman).
The current indication reaches 4.9 A, but since I have limited the speed and heating considerably this suffices to print.
What also troubles me is the dropping temperature of the heating bed. I warmed it to ~45 degrees, but activating the fan makes it drop to about 30. This is with the heater switched on. I have never been able to reach temperatures above 50 degrees. I’m now planning to refit the wires to the heating bed to see if this improves the situation. The 3drag printer also uses a nozzle to redirect the airflow. I will look into that as well.
As you can see the printing result is excellent now, but I am also planning to test a number of different materials that require those different temp settings.
Kind regards,
The image of the print result did not make it in my previous post, so a second attempt:
With an oscilloscope across the 15V input power supply and both the extruder and bed heaters on, then after a while I get a drop in the power supply output to around 10V which coincides with the brown our reset message.
I will send back the power supply for a replacement today.
John
Hi,
This is my second printer built, so I know what I should expect of the printer.
I am getting the “brown out reset” whenever PWM temperature control kicks in.
Is this the PSU or the circuit board that should be replaced?
As soon as the temperature threshold is reached, the “brown out reset” happens.
It does not matter which direction the temperature threshold is reached from!
Measuring the PSU voltage, stays at 15.4VDC while heating up to a temperature OR while cooling down from a higher temperature. As soon as PWM temperature control engages there is a voltage glitch down to 6-8V.
What should I test next?
I do not have the first printer anymore.
What should I return for replacement?
Belgium is far for me.
Nick
Just a guess and something to try.
Make sure the screws for the power supply leads are tight.
I hope this helps.
Thank you for the suggestion,
It does not help
Nick
If it’s plugged in to a surge protector unplug it and plug it in to a wall
Thank you again for the suggestion,
however I have read the posts on this forum related to the brown out reset problems.
AND tried the previous suggestions.
My question really has to do with the PWM control kicking in after the temperature is reached.
This really has to do with the printer’s inability to melt plastic.
If you do not mind, I would appreciate velleman’s comment on this.
Thanks
Nick