Bitcraze Forums

These days I've been working on somehow combine these two drones: https://cdn.shopify.com/s/files/1/1285/4651/products/CineBee-75HD-with-RuncamSplitNano_4_-1000x1000_700x700.jpg?v=1579823606 and https://www.bitcraze.io/images/Crazyflie2.0/Crazyflie2.0-585px.JPG . The first is iFlight Cinebee, it's v...

tobias wrote: ↑Fri Jan 31, 2020 8:36 am After checking the datasheet a bit more the operating voltage range is 4.35V to 6.4V, thus it will not regulate the voltage above ~6.4V so It looks like it can not be powered by more then that.
bq24075-vop-range.png

OK, I'd rather using a external 5V LDO instead.

And I found an interesting thing, when you remove the R24(which is connected to NRF51822 in the crazyflie 2.1 schematic), then connect the pin5 of NRF51822 to the VUSB, it works normal w/o battery. To me this sounds like a bad idea. You will put 11v on pin5? Or did you maybe remove R25? What I want...

What I want to do now is make the drone powered by 11v battery.

BQ24075 can support up to 18v input Maybe you can explain a bit more what you want to do. Even though the BQ24075 support high import voltage I don't think it supports much current before things will get hot. After some digging I also found the problem with the booltoader mode when running from USB...

Recently I want to power the crazyflie with a 11v battery but I found the BQ24075 doesn't support that. So I decide to find another way to realize it. My design is connect the 11v input to vusb since I never use usb port for communication and BQ24075 can support up to 18v input. That works. But the ...

You can try to remove the div.reset() call. It was mostly done as a precaution and should not be required. It doesn't works, if I remove the reset(), the scripts like scan.py or ramp.py will work but I can't flash the firmware. During the flash, it shows the "usb.core ... Resource busy". ...

I found that if I set the usb compatibility of the vmware to usb 3.0 (for a ubuntu 18.04), the process for close link will too slow (~20 seconds) compared to the usb2.0 compability (~3 seconds). After tracing the execution of the crazyflie-lib-python, I found it is the close() function for class Cr...