I am using invensense gyros with an ardupilot mega for a quadrotor imu/controller.
Attached are the reading from my gyros which seem to be very noisy, perhaps from vibrations.
Is this amount of noise seem normal to you? I think it's much to noisy and
Read more…Hi!
I'm trying to get my XBees to work, using the Xtremebee board from DIYD on the aircraft side and the USB interface board that came with the XBee Dev kit.
So far, no dice! Has anyone used this board successfully? I have the recommended board on or
Read more…Can anybody tell me if the following options for the mediatek GPS receiver are activated via firmware 1.4 or 1.6 or both? Also, if the maximum update rate is 10MZ, anybody knows, what the CURRENT update rate for firmware 1.4 or 1.6 or both?
Thanks.
D Read more…
Without any knowledge of DCM, I'm porting a DCM implementation, that is used with SparkFuns 9DOF to C for ARM Cortex M3.
So far it goes well, but since I do not know what to expect of data in the matrices, I do not know if the current filter output d
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I am considering a parachute on a 7Kg (15lb) UAV.
I have found various formulas on the web, but the question is what parameters to use.
What rate of descent should I choose so that, after a parachute landing, a well built but not overweight UAV will b
Read more…Hey all,
Just posting for some help. Now i'm in the design phase of my UAS and i'm looking into what sort of payload im goin to be carrying.
As for Cameras - I know there are a few on the internet designed specifically for what i require but as usu
Read more…I'm starting a beginner's guide to building a drone... there's a few notes and a link to the document here:
http://diydrones.com/profiles/blogs/introduction-and-beginners
ps, what's the best "general" forum category?
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my research team has recently bought a 1meter wide carbon fiber frame that can hold 24lbs. since the frame can hold that much we want to be able the carry that much. mulitple gps units, better INS, airborn Lidar, ...ect. So i was seeing if you guys h
Read more…Screencast of Gyros gone crazy
Can anyone suggest why this was happening? Its random, sometimes after power on I got this, even after a few reboots, and then it goes away.
I armed the motors once when this was happening and it caused the quad to fli
Read more…Hello all,
This is my first post on the DiyDrones.
We are developing an autonomous quadrotor UAV, using Vectornav IMU and Mikrokopter ESCs with brushless motors.
The main MCU (STM32) runs three PID algorithms at 200Hz for roll, pitch and yaw axes. We
Read more…Hello~
I have an Ardupilot mega & an IMU Shield.
After reading the manual on homepage, I connect these two.
But I don't know How can I see data such as roll, pitch, yaw and so on.
When I click Serial monitor after uploading, no data(roll, pitch...) ap
Read more…I've been at this for quite a while now, and need some sanity introduced.
I recently needed to re-install my Windows 7 machine into a VMWare instance. I'm trying to get this environment set back up.
After a LOT of messing around, if I copy the RC2 l
Read more…Hello All,
THough I have tried to read through all documentation, I have a question on the measurement units being used throughtout the code and hardware.
1. For example, the documentation says that airspeed is in m/sec but in the EEPROM it seems to b
Read more…Last week I had a touch time trying to set the proper throttle failsafe PWM value. The default is 975 and i wanted to set it to 1030 . I put
#define THROTTLE_FS_VALUE 1030
in the APM_config.h and uploaded the code, but in the Setup>Show i still saw the
Read more…I had a crash a couple of weeks ago that damaged the IMU. It would spin up but would not auto stabilize. After replacing the IMU I got it running again but as long as I have the magnetometer plugged in, the boards will not light up at all. All I get
Read more…i need some help please
can the paparazzi handle a plane with these specs
1. weight >60 kg
2. wingspan 4m
3. altitude >3500m
4. range >100 km
can someone also please recommend some commercial autopilots that can achieve this
Read more…So, after a few crashes, i've managed to bend or destroy the a number of motor mounts. I checked with store.diydrones.com sales folks and also searched the jdrones store. Can anyone point me to a place where I can order some replacement motormounts.
Read more…Hey Everybody I'm completely new at the ArduPilot/APM thing so please forgive my stupidity. I've downloaded and printed out the entire APM 1.02 source code so i can analyze and fully understand how it works before I just blindly set it in an aircraf
Read more…Hi,
I had a couple of questions regarding the airspeed sensor
1) What equations are used to actually calculate the airspeed? It must have to do with both the dynamic pressure and the density
2) where is the density coming from? how is it calculated?
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Is there a way how to find out which FW version i have in my MTK GPS?
Since i don't have FTDI cable best would be somehow via CLI.
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