"Just reference to the Earth gravity vector, and use an arctangent function to find the X and Y Euler angles. Be careful about linear accelerations, as they'll throw off your calculations.
Note: the Z Euler angles will be invalid most of the…"
Why do you want to use just accelerometers? You can add gyros without increasing your footprint size - Invensense sells a chip that combines gyros/accels into one small package and a common communication interface.
You COULD use…"
"Thanks for your helpful post Caleb. Would you possibly know an answer to the following question:
Attitude estimation with ONLY 3axis ACCELEROMETERS. and nothing else, based on a lowpass filter? where can I find an opensource way to do…"
"Attitude estimation ONLY 3axis ACCELEROMETERS.
Dear DIYdrones friends,
I'm looking for an Attitude Estimation algorithm, and only have 3 axis accelerometers. I know this will may not be optimal, and will be slow. But, if you know an…"
I originally designed it to sell as a drop-in replacement for the Mikrokopter autopilot, and as the autopilot for a potential new quadrotor product. A few higher-priority projects have taken precedence, though, so I haven't…"
I have a few questions I am hoping you can answer:
Did you use the same accels and gyros from your IMU board?
Why the two processors? Is one running the GPS/IMU code and the other autopilot code?
Cost? Are you going to be selling…"
Hey all, I'm finishing up a new quadrotor/octocopter autopilot design. I just got my second revision board populated and tested. I was excited enough about it that I thought I'd share it... :-D Some of the features of the autopilot are listed below: 1. Onboard gyros, accels, magnetometer, and absolute pressure2. MicroSD slot for telemetry logging3. Dual 72 Mhz ARM Cortex M3 processors (upgradeable to 120 Mhz)4. 8 Hobby PWM outputs for motor and servo control5. 8 i2c pinouts for connection with…See More