Search found 2119 matches

by tobias
Mon May 03, 2021 7:00 am
Forum: General discussions
Topic: [Solved] Charging and Discharging unprotected batteries.
Replies: 6
Views: 538

Re: [Solved] Charging and Discharging unprotected batteries.

The 4.2v is controlled by the BQ24075 charger and looking in the datasheet the charging voltage can't be changed.
by tobias
Fri Apr 30, 2021 11:44 am
Forum: Developer Discussions
Topic: Filtering on Gyroscope
Replies: 2
Views: 58

Re: Filtering on Gyroscope

There are two level of filters. One in the gyro, BMI088, itself and one 2-pole lpf running in the sensor loop.

For the BMI088 filtering I think the datasheet is the best place to find delay parameters.
by tobias
Fri Apr 30, 2021 8:04 am
Forum: Developer Discussions
Topic: BigQuad used but the drone is very unstable
Replies: 8
Views: 657

Re: BigQuad used but the drone is very unstable

Yes the START_DISARMED probably needs some explanation. It is a safety mechanism and you can decide if you like to use it or not. To arm the motors the parameter system.forceArm needs to be set to 1. This will arm the motors.
by tobias
Fri Apr 30, 2021 8:00 am
Forum: Quadcopters
Topic: Battery Advice
Replies: 1
Views: 36

Re: Battery Advice

Yeah, good question and I don't have any good answer. I little bit swollen I think is OK but yours might be on the edge. In this case probably better save then sorry... I don't think I ever heard of a battery becoming more dangerous because it is swollen though.
by tobias
Fri Apr 23, 2021 8:52 am
Forum: Developer Discussions
Topic: BigQuad used but the drone is very unstable
Replies: 8
Views: 657

Re: BigQuad used but the drone is very unstable

CF_MASS should be in kg so in your case 1.0f. "f" is to tell the compiler it is a floating point number.
by tobias
Wed Apr 21, 2021 9:25 am
Forum: Developer Discussions
Topic: Bolt not applying thrust to one motor, but responsive(?)
Replies: 6
Views: 196

Re: Bolt not applying thrust to one motor, but responsive(?)

Then I suggest measuring the voltage of the M4 signal as I suggested before. I don't know what motor signal protocol you have selected but the default PWM@400Hz should give you a voltage around 1.4V when no throttle is applied. You can also try another protocol like the OneShot125 , maybe this will ...
by tobias
Mon Apr 19, 2021 11:10 am
Forum: Support
Topic: Logging time onto sd card
Replies: 9
Views: 249

Re: Logging time onto sd card

I can help you with part of it at lease. I guess you already read the documentation here ? 1. Start with a standard example just to get going. 2. Check that the sd card is initialized correctly with the console prints in the cfclent. 3. Add your variables and event-triggers All events (groups) are t...
by tobias
Mon Apr 19, 2021 10:57 am
Forum: Developer Discussions
Topic: Bolt not applying thrust to one motor, but responsive(?)
Replies: 6
Views: 196

Re: Bolt not applying thrust to one motor, but responsive(?)

Did you use the connectors so you can unplug the ESC? If so you can connect the ESC to an arduino and program it using BLHelisuite without having to unsolder the ESC. When you refer to "Green" is that an LED on the ESC? If you unplug the M4 ESC and measure the signal with a multimeter in DC mode it ...
by tobias
Fri Apr 16, 2021 9:18 am
Forum: Developer Discussions
Topic: Bolt not applying thrust to one motor, but responsive(?)
Replies: 6
Views: 196

Re: Bolt not applying thrust to one motor, but responsive(?)

That looks very nice, let's try to get it into the air! Have you been able to check that you get a signal output on M4? I guess that since after 5min M4 actually is starting to run rules out any HW problem with the Bolt. My guess is that there is some calibration settings issue with the M4 ESC. And ...
by tobias
Fri Apr 16, 2021 8:57 am
Forum: Developer Discussions
Topic: BigQuad used but the drone is very unstable
Replies: 8
Views: 657

Re: BigQuad used but the drone is very unstable

Hi, The Kalman filter no longer needs the weight/thrust so nothing to do there. What might need tuning is the different position controllers. If you are using the PID (which is a good start) you should alter the BaseThrust here . The other PID position parameters should work but could also be tuned ...