Read servo output using mission planner

Ground Control Software Mission Planner
1

Hello all of you.

I want to read throttle signal (servo3). I know that i can see it on “Tuning”, but i need it to use in real tieme during mission.

Do you know how can i read it?

I’m trying to read it with arduino. I conect to servo3 (throttle), but arduino don’t read properly the signal.

I think the hz from the servo (i use this for servo https://ardupilot.org/copter/docs/common-thecube-overview.html) is diferent of the arduino and it’s not posible to read the output signal.

you know how can i solve this problem or other way to read it?

Thank you

2

The mavlink messages give you that already:
https://mavlink.io/en/messages/common.html#RC_CHANNELS_RAW <- Reads channel inputs
https://mavlink.io/en/messages/common.html#SERVO_OUTPUT_RAW <- Reads channel outputs

3

Thank you.

I need to read it with out using mavlink, i need to read it from the servo output.

4

You say you want to use mission planner. Mission planner uses mavlink. Why do you say that you can not use mavlink?

5

If you are using standard RC PWM output (not dshot etc), an Arduino should be able to read the signal via the pulsein function or using interrupts.

6

The problem is not to use Mavlink, is that i need to do it with teensy.

Now i solve the problem.

Thank you

7

Yes, i use standard RC PWM, and i was using “pulsein()”.

But i have a mistake in code… i was using serial.begin(9600), and it need to be 115200.

Thank you!

8

Hi mate, could you give me a cable and share a bit of your light, it also happens to me, I’m trying from a teensy 4 to read the values of channel1 and channel3 to make a conversion of values and send them to other servos from the teensy and no I can read nothing, it only gives me a value of 0, what code have you used to read the PWM values, could you share it with me?

Thanks in advance