Measuring voltage Servo Rail in mission planner

Do you look at the right place to find Batt2 voltage?

Batt2Volt

In the HUD, I have my Power module battery voltage (11.57)

In the Quick screen, I choose Batt2 Voltage (double click to select display item).

Value displayed is 5.00v, it change slightly when switching on led lighting.

My voltage multiplier is quick and dirty guess. I did not check the real bec servo rail voltage with multimeter before.

Yes

Marc.

Which pin do you provide power too? I have mine on pin 14.

NVM just moved it to Pin 2 and still no voltage reading.

Same pin for me. Ground and 5v.

I see I am getting Log errors. Might be something or might be nothing. let me see if I have any luck when replacing the SD card.

Nope nada not a thing. Not sure what is wrong. EMLID any one

Hi @Barry_Bolton,

Can you please specify which log errors you got?

It was a bad SD card.

Tatiana do you think you can ask your engineers over at Emlid to look into the issue of the 0 reading as per my post?

Barry,

Could you please elaborate on what’s the issue with 0 reading?

Tatiana. The whole thread is there. You even commented on the post. The issues is that no matter what I adjust in settings I always get 0 reading on my BATT2

Can you check your RCIO firmware version?

54

Same as yours marc

Hi Barry,

In QGC, please try to configure the same settings for the Battery 1.

Check the screenshot below for more details:

31

I have a question about the input.

I’m using a normal UBEC to power the servo rail, Could this be an issue?

Barry,

Could you please run the ADC example and post here the output?
Just to check whether the servo rail is supplied with power.

OK I will do but I have already flown with the power going into the servo rail. If I only plug the power in the power rail the PI and Navio powers up

Hello Tatiana.

That is a little above my Coding skills. Do I have to for example type “cd Python
python ADC.py”

Directly into the CLI? If I type cd Python it just tells me no suck file or directory

Hi Barry,

May I ask you to run this command instead?
cat /sys/kernel/rcio/adc/ch1