Bitcraze Forums

I am manufacturing 250 class drones using Bigquad decks.
It aims to fly a large stable quadcopter by performing gain tuning by referring to YouTube below.
Esc and batteries were soldered to PDB, the big quad deck attached to the top of the CF and the flow deck attached to the bottom of the CF.
We are using the latest crazyfly firmware, and the config.mk file was done with the same work as the YouTube link below.
However, when connected to the PC client program, the state estimate Z value exceeded -40, and the system ->force Arm was changed from 0 to 1 in parameter block, but the esc does not appear to be calibrated. Therefore, the rotation direction of the S motor has not yet been confirmed. When power is connected to the quadcopter, only the beep sound is constantly heard.
What can I improve more here?
I reaally want to fly this quadcotper with bigquad deck!

Youtube link : https://youtu.be/xiWLhr-HpG8

I missed this step https://wiki.bitcraze.io/projects:crazy ... #schematic
but when I looked console block, it still cannot detect bigquad and flow deck.
I think hardware connection has not any problem, but I'm in still same matter.

Can you try without the Flow deck attached? Also remove the ...ENABLE_PM and ...ENABLE_OSD to start with.

Thank you for helping me.
I replaced Flow deck with Zranger deck v2 and modified it in the firmware code flow deck_v1v2.c as follows.
Finally, the Client recognizes both big quad deck and zranger deck, and you can check the console window for the following:

BIGQUAD: Switching to brushless.
MTR-DRV: Using brushless motor driver

However, the ESC beep still does not stop, and the motor does not work.
Even if the system->forceArm value was changed to 1 in the parameters block of the Client, the motor did not operate. I changed the enable item of the motorPowerSet to 1, just in case, but it shows the same result.

How do you power the BigQuad deck? It needs 5V on one of the 5V inputs else the pull-up resistor will not be powered and there will be no signal to the ESC.

The last thing I could think of is if the Crazyflie is upside-down so the tumble detection kicks in and outputs zero. Do you have any means to check the ESC signal? An oscilloscope or logic analyzer would be best but a volt-meter could also give an indication. I measured the zero throttle DC voltage for
- 400Hz PWM (default) which showed ~2.0V
- OneShot125 which showed ~1.3V

If you get similar voltage as above then I think it is the ESC that might have entered programming mode or similar. What ESC do you have? Have you checked its manual?

The 1s LiPo battery provided by Bitcraze is connected to the CF to power the Bigquad deck. https://store.bitcraze.io/products/240m ... sb-charger
And I soldered the ESCs to this PDB. http://www.mateksys.com/?portfolio=hub5v12v
15A ESC https://hobbyking.com/en_us/hobbywing-x ... tore=en_us
and I'm using 4S 2200mAh LiPo battery for the power.

The CF was placed normally, but why is the fall detector working upside down? I want to know the reason!
We're going to measure the voltage using a multimeter right now.

Then the problem is most likely that the BigQuad deck is not powered with 5V. So remove the CF Li-Po and connect the 5V output from the PDB to one of the BigQuad deck inputs marked 5V. The CF should then start when you connect the big Li-Po.

I removed CF 1s LiPo Battery and connect the 5V output from the PDB. Also I check the voltage 5V.
when I connect the 5V from PDB to Bigquad, CF could start.
And when I changed the forcearm value to 1, the motor spinned!!
Thank you so much!!

Glad it worked out!