Andy Baker's Discussions (11)

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MPU-9250 magnetometer / compass

Hi 

I want to use the compass for two reasons:

  • Getting the orientation of my pidrone prior to takeoff which combines with GPS, gives the ability to flying between fixed predefined waypoints.  This works perfectly.
  • Use it as a long term fusion with yaw a

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Autonomous GPS tracking X8 piDrone

With a Raspberry Pi, running standard Raspian Linux, all coded in Python with 7 sensors (Accelerometer, Gyrometer, Magnetometer, down-facing LiDAR and RPi camera, GPS and Scance Sweep), my 5 year from absolute ignorance proof of concept project is ne

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Recommended GPS receivers

Hi,

I'm using off-the-shelf USB GPS receivers for my X8 Drone (pidrone.io); in some quick testing this morning, I'm getting somewhere between 4 and 7 satellites depending on which receiver I'm using; in contrast my DJI Mavic gets 10+. Mostly my receiv

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X8 prop layout and control

I'm considering building an X8.

From what I understand so far, on a given arm, the top and bottom prop rotate in opposite directions - note I'm meaning the props themselves; the motors rotate in the same direction, but the lower motor is upside-down.

I

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MPU6050 accelerometer drift

The accelerometer readings from my MPU6050 drift over time. See the attached graph.  Throughout, the quad sat stationery on the ground, and only the flight controller powered up - no power to motors / ESCs.

Quad frame accelerometer X, and Y readings (

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MPU6050 deadzone around 0g?

If I pick my sensor board off the floor, the MPU6050 Z-axis accelerometer detects this.

Once off the floor and no longer rising, if I move forwards, and then to the left, the X and Y accelerometers do not detect this.

I've got the sensor set at +/- 2g,

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Prop size matching motor size / power?

I'm using Tiger motors 2212-13 980 KV motors - reportedly these are suitable for blades up to 10" and they are working well for me.

I've seen Tiger motors 2216-?? 980KV which apparently are suitable for larger blades (I forget the size).  I'm currentl

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