Attention pixhawk cube can burn when switching the power port!

(Сергей Владимирович) #1

reetings colleagues. Conducted a power switch test between ports. Wiring diagram Power port 1 much hyb-bec 12 + Mauch PL-sensor., Power port 2 Hex Power Brick Mini. Power was supplied on two lines at the same time. I turned off the Power port 1 while the controller switched to power from the Power port 2, after 5 seconds I turned on the Power port 1 while the Mauch PL-sensor burned down. After that, my Pixhawk 2 ‘The Cube will not start.

It was not the current sensor that burned down, but the controller itself. Do the test yourself. the controller( pixhawk 2.1) is connected via a standard current sensor port 1 and port 2 simultaneously. Disconnect port 1 - the controller will switch to the power of port 2, after 5 seconds, turn on port 1 - the controller will burn.

I can not understand the reason, since the controller should switch from power port 1 to port 2 and back

#2

Can you please send a photograph of your exact setup?

What voltage are you putting in each port?

#3

And “Burn” what do you mean? Catch fire? Get hot? Release smoke? What exactly is happening

(Сергей Владимирович) #4

1-What are the exact settings you send? I can lay out the full list of parameters.
2-Power port 1 power through much hyb-bec 4-14S + Mauch PL-sensor (Battery 12S) Power port 2 is connected to a regular Hex Power Brick Min (Battery 4S)
3- There appeared a lot of smoke from Mauch hyb-bec 4-14S , after the controller stopped to connect and react. My PC doesnt see it.

(L Kurt Shaw) #5

1 not what he is asking. Wants photo of all your electronics and wires in aircraft.

#6

This is very unnerving hopefully they can test this out on one of their cubes to confirm this issue. Dev’s are you going to test this???

(Сергей Владимирович) #7

If you need a photo of the connection, I’ll do everything. Additional equipment remained intact (gps1, gps2, 4G modem, today I checked everything) . Waiting for comments from the developers.

(Сергей Владимирович) #8

However, the duration of waiting is too long. It actually takes 5 minutes to check this issue.

(Colin FPV) #9

Sergey we cant help if we cant under stand you try using google translate this is why no one has answer you

приятель, мы не можем помочь, если мы не понимаем, вы пытаетесь использовать Google Translate, поэтому никто не имеет ответ

(Сергей Владимирович) #10

Guys, sorry for misunderstanding. The issue was that: my controller was connected via two power ports at the same time. Mauch sensor was connected to the 1st port. Original current sensor was conected to the 2nd port. I disconnectaed power port 1, after that conroller switched to the power port 2, without stopping its work. 5 seconds later I connected the power port 1, during this controller didnt switch to port 1, as it has to, and failed. Afterwards smoke went from current sensor of power port 1 and hyb-bec 4-14S

(Colin FPV) #11

are they running off one battery or do you have 2 ?

#12

It is not supposed to reconnect to power port 1 after power port one recovers.

However, in this case, it looks like you somehow blew up your Mauch power module.

I have asked multiple times for a picture of your setup. I need to know exactly what was plugged into each and every connector, what your system looks like, and how you have your batteries.

We cannot “replicate” your system, as we still have no idea what your system looks like.

Please supply photographs.

The power switch over has millions of flight hours testing, so I am not in the least concerned about that, but until you supply the details asked, we cannot help you find the cause of this issue.

My first suspicion is that somehow, in your removal and replugging of the Mauch, you have caused a failure that lead to full battery power going into the cube.

But again, photographs are needed.

1 Like
#13

Until he supplies pictures, we cannot do much

(Сергей Владимирович) #14

2 batteries

(Сергей Владимирович) #15

Thanks for answer. I am currently not at my working place, and all the equipment stays there. I will definetly supply the photos you asked tomorrow.

1 Like
(L Kurt Shaw) #16

A short video of how you disconnected and re-connected power port 1 could also be off much help

1 Like
(Сергей Владимирович) #17

On these photographs you can see all the additional equipment that was plugged in to the flight controller. As you know our flight controller was burned , so we had to move it to our head office ( which is is situated in other place, not here). Until we don’t know the reason of failure it will stay there. On this basis I have sent the photos of all periphery plugged to the controller. On other photos you can see the scheme of connection of power parts.

(Сергей Владимирович) #18

Gps1, Gps 2, and 4G minla telemetry (autonomous power)

(Colin FPV) #19

Should there be a common ground between the battery’s ?

(Сергей Владимирович) #20

No, batteries are not interconnected. One battery 12S (power port1) Backup battery 4S (power port 2)