Naze 32 quadcopter controller and MPU6050 accelerometer.

Projects General Guidance
1

Naze 32 quadcopter controller and MPU6050 accelerometer.

Anyone here familiar with those accelerometers please.

I and others have been getting crashes.

Vibration suspected there.

Im leaning towards brownout of the accelerometer after some testing.

Anyone familiar with the chip ?

2

I think it is time for general electronics troubleshooting. Watch the accelerometer data on your configuration screen and try various things:

  • Heat the board to check for thermal problems.
  • Flex the board to check for bad connections.

Good luck.

3

It seems to be something that only happens under load.

Unfortunately i cannot have props attached in the workshop and running.

When "it" happens the naze board spins the props and attempts recovery so that is still working but powers into the ground.
I can only think the accelerometer chip has lost calibration somehow.

I tried attaching an arduino to the serial interface for logging, the naze survived the crash , the arduino did not.

Using a seperate cell to power the naze board solves it but i dont have the room.

4

Boardburner2:
Using a seperate cell to power the naze board solves it but i dont have the room.

That definitely points to a power problem. Perhaps a capacitor on the power input will help. Something in on the order of 100-500uF. A choke (coil) will help suppress noise spikes in the power.

5

Cap does not.
A 16 v tantalum failed using a 3 s pack.

Choke , for some reason which I cannot explain it did not occur to me... new attempt.

6

Boardburner2:
Cap does not. A 16 v tantalum failed using a 3 s pack.

"Failed" as in "did not prevent the problem" or "failed" as in "exploded"?
What value of capacitor did you use? The 16 Volt rating says nothing about the capacitance. Was it over 100 microfarads?

7

Failed in it, just stopped working mode.
2 uF
Thats in parellell with an electrolytic of 47 uF.

Have some problems with naze 32 not controlling addressable leds as well.
With 50 MHz analogue scope nothing obvious on the power supply .

Lots of ringing on the signal line though.
Could be messing with the timing.

8

New tantalum fixed it for a while then fails short.

9

Boardburner2:
New tantalum fixed it for a while then fails short.

I think i have it fixed now.
Replacing the BEC with a linear reg seems to have done the trick.