Voltage from SMB connector

[evman]

I'm trying to work out if my main board is causing my not intelligent battery error. I put a multimeter from the smb pins to a ground wire for an ESC. Does anyone know what they should be? I get ~1.1v on one pin and ~3.3v on the other.

Also when the gimbal is unplugged from the phantom, I'm seeing "gimbal switch: on" and the gimbal settings menu in the DJI assistant software. Is that normal?

thanks

 

[N017RW]

Can you post a pic of where you are probing the SMB - ESC?

Can't help with second question.

 

[evman]

Hi,

It's the SMB plug on the main circuit board, photo attached, arrow points from ground to the pins.

I guess with the second question all I'm asking is for people that don't have a zenmous gimbal does it the assistant still show the gimbal settings.

thanks

 

[N017RW]

Jeeze, SMB, smart battery, I completely went blank earlier.
Those are data comm. pins to ports on the embedded processor.
My schematic shows them both pulled High to 3.3v through 4.7K resistors.
But I do not know enough about the processor to say that the one measuring 1.1v isn't low because the uP is trying to comm. or handshake with the batt. so I cannot say if that is 'normal' or not.

 

[evman]

Yeah I looked at the schematic, seemed it should be 3.3v. But as you say it may just be low normally. I've ordered a new board so hope that fixes it.

 

[N017RW]

Please report back after regardless of outcome.

It may help another in the future.

Plus I'm selfishly curious

 

[evman]

Will do.

 

[evman]

Please report back after regardless of outcome.

I replaced the main circuit board and she is working good as new. So if you have a non dji battery error and nothing else works try a new board.