Search found 2338 matches

by tobias
Mon Jan 24, 2022 10:13 am
Forum: General discussions
Topic: Experiencing apparently solved problems with SD deck
Replies: 13
Views: 21330

Re: Experiencing apparently solved problems with SD deck

Big thanks for doing this extensive testing! The sd-logging is a bit challenging as it is resource limited and when getting close to the limit strange things start to happen. Best would be if it didn't but we are not there yet. By resources I mean mainly CPU time and SPI bus time. As both UWB and fl...
by tobias
Tue Jan 18, 2022 8:32 am
Forum: Developer Discussions
Topic: What is the specification of the Lipo battery connector?
Replies: 1
Views: 734

Re: What is the specification of the Lipo battery connector?

Female Battery Connector: 51005-0200 at molex.com
Male Battery Connector: 51006-0200 at molex.com

I'm not sure most batteries specify it so I would go by the looks. Also check that the polarity is the same, which if not, can be switched afterwards.
by tobias
Tue Jan 18, 2022 8:08 am
Forum: Developer Discussions
Topic: Looking for thrust coefficient and power coefficient data of the propeller in its ascending flight
Replies: 3
Views: 1645

Re: Looking for thrust coefficient and power coefficient data of the propeller in its ascending flight

Sorry but we don't have that data and I have not heard of anyone else doing that type of measurement either. I guess the only way to measure it is in a wind tunnel...? It would be really good data to have though!
by tobias
Tue Jan 11, 2022 9:35 am
Forum: Quadcopters
Topic: How to keep a specific PWM value for some time?
Replies: 4
Views: 9671

Re: How to keep a specific PWM value for some time?

Without trying this I think the problem is the send_emergency_stop_watchdog which needs to be sent at least every second. If you try with a time step of 1 does it work then?
by tobias
Wed Dec 22, 2021 9:53 am
Forum: Support
Topic: motors power problem
Replies: 5
Views: 9805

Re: motors power problem

Batteries all looks good. Then let's test with new motors and propellers. I have replied to the email request.
by tobias
Tue Dec 21, 2021 10:01 am
Forum: Quadcopters
Topic: mainboard problem of crazyflie2
Replies: 1
Views: 8248

Re: mainboard problem of crazyflie2

Where did you buy it? Looks like a clone!

Try a cold boot recovery as linked to in the end of this post.
by tobias
Tue Dec 21, 2021 9:46 am
Forum: Support
Topic: motors power problem
Replies: 5
Views: 9805

Re: motors power problem

It sounds very much like it is the motors and propellers. If you can switch motors and get it to work properly that is my conclusion. Send us an email to support at bitcraze.io and we can send you some spare motors and propellers. The only twist to this is that we have not seen this type of problem ...
by tobias
Thu Dec 16, 2021 9:35 am
Forum: Bitcraze
Topic: [SOLVED] A large quadcopter using bigquad deck - can't fly, motor doesn't spin
Replies: 8
Views: 12402

Re: A large quadcopter using bigquad deck - can't fly, motor doesn't spin

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.