Sign up or log in to customize your list. Here's how it works: Anybody can ask a question The best answers are voted up and rise to the top I'm wondering if there is a way to figure out the actual controllers used in the commercial drones such as AR drone and Phantom. According to AR drone SDK, users are not allowed to access the actual hardware of the platform yet they are only capable of sending and receiving commands from/to the drone. I'm hoping to to check the actual controller utilized in the software. When I fly AR drone, it seems the platform can't stabilize itself when I perform aggressive maneuvers, therefore, I can guess that they use linearized model which is applicable for using simple controllers such as PD or PID closed as unclear what you're asking by Paul, Mark Booth Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking.

See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question. I would recommend looking at the PX4 software that runs on the pixhawk. It's open source and is available on github. You won't be able to see the actual control software flying on the other drones as it's proprietary. the software on the pixhawk is well put together and maintained. it is likely more accessible than most because processes are split into modules and comminicate via messages. The ardupilot is another open source flight stack. However, the ardupilot is a god object that is a mess of inheritance. If you are not familiar with oop you best stay away. The only downside to the px4 flight stack is that it uses cascaded pid for attitude control which isn't all that exotic. But if you're just looking to get a feel for how controllers are implemented in the real world on embedded systems, the px4 flight stack will be your best bet.

Reverse engineering is the term you are looking for. Search reverse engineering ar drone or reverse engineering phantom to get started. Reverse engineering embedded systems can be really educational and fun, if time consuming. Most embedded processors have code security subsystems, but manufacturers often don't bother to turn them on, and if they are turned on, a little research will give you lots of info on bypassing the typically inadequate security. Not the answer you're looking for? parrot ar drone with radioBrowse other questions tagged quadcopter control or ask your own question.ar drone 2 gps moduleRobot App Store Developer Programwhere to buy ar drone in south africa

How to Control AR.Drone Movements During Flight Make sure you are familiar with "How to program AR.Drone remotely over WIFI" chapter before you continue This command is used to control the flight motion of the drone while in the air such as rotation or speed. Make sure the command AT*FTRIM has been called before taking-off for horizontalotherwise Ar.Drone won’t be able to stabilize itself when flying. AT*REF=[Sequence number ],[Flag bit-field],[Roll],[Pitch],[Gaz],[Yaw]storm drone 6 norge Sequence number- 1 if it is a first command, or sequence number value ofar drone 2 backflip previous command + 1.storm drone 6 ebay Flag bit field- a 32 bit-wide bit-field integer. Roll- drone left-right tilt. Floating point value in range of -1 to1;

Pitch- drone front-back tilt. Gaz- drone vertical speed. Floating point value in range of -1 till 1; Yaw- drone angular speed. The following UDP packet will make the drone to spin clockwise with 0.75 of its The UDP packet that is sent to AR. AT* PCMD =1,1,0,0,0, 1061158912 Flag bit-field argument values This flag bit-field configures how the drone will interpret the progressive commands Bits order is from right to left MSB first. The flag field contains the following bits: Bit 0: Enable progressive commands. If this bit is set to 0- progressive commands values (Roll, Pitch’ Gaz and Yaw) will be ignored and the drone will enter a hovering mode. Setting this bit to 1- will make AR.Drone to consider the values of the progressive commands that are passed in this command; Bit 1: Enable combined yaw. If this bit is set to 0- Yaw argument value will be considered. Setting this bit to 1- will result the Yaw argument value to be ignored and to be

calculated automatically according to the Roll argument value for base turns; Bit 2-31: are not used. The following flag field's values are valid: 0- Hovering mode- the drone will stay on top of the same point above the 1- Progressive mode- the values of all the progressive command argument will 2- Combined yaw mode only- do not use this mode; 3- Progressive with combined yaw mode- the values of the progressive command arguments will be considered except the yaw argument that will be calculated automatically according to the roll argument; Roll argument value sets the percentage of the maximum inclination as configured in the drone parameters for drone’s left-right tilt. The direction is determined by the sign of the number: Negative percentage value will make the drone tilt to its left, thus flying Positive percentage value will make the drone tilt to its right, thus flying How to represent the value: Convert the float number [-1, 1] to hexadecimal signed value.

the conversion will be given in future posts; Convert back from hex to signed 32-bit decimal number; The following values are mostly used: -1082130432: The minimum converted value -1 will make the drone fly leftward -1086324736: The converted value -0.75 will make the drone fly leftwards -1090519040: The converted value -0.5 will make the drone fly leftwards with -1098907648: The converted value -0.25 will make the drone fly leftwards 0: This value will make the drone fly horizontally; 1048576000: The converted value 0.25 will make the drone fly rightwards with 1056964608: The converted value 0.5 will make the drone fly rightwards with 1061158912: The converted value 0.75 will make the drone fly rightwards with 1065353216: The maximum converted value 1 will make the drone fly rightward Pitch argument value sets the percentage of the maximum inclination as configured in the drone parameters for drone’s front-back tilt.

Negative percentage value will make the drone lower its nose, thus flying Positive percentage value will make the drone raise its nose, thus flying Convert the float number [-1, 1] to hexadecimal signed value. The explanation for the conversion will be given in future posts; -1082130432: The minimum converted value -1 will make the drone fly frontwards -1086324736: The converted value -0.75 will make the drone fly frontwards -1090519040: The converted value -0.5 will make the drone fly frontwards -1098907648: The converted value -0.25 will make the drone fly frontwards 1048576000: The converted value 0.25 will make the drone fly backwards with 1056964608: The converted value 0.5 will make the drone fly backwards with 1061158912: The converted value 0.75 will make the drone fly backwards with 1065353216: The maximum converted value 1 will make the drone fly backwards Gaz argument value sets the percentage of the maximum vertical speed as configured

in the drone parameters for drone’s vertical movement up or down. Negative percentage value will make the drone go down, thus go downwards; Positive percentage value will make the drone rise up in the air, thus go -1082130432: The minimum converted value -1 will make the drone fly downwards -1086324736: The converted value -0.75 will make the drone fly downwards -1090519040: The converted value -0.5 will make the drone fly downwards with -1098907648: The converted value -0.25 will make the drone fly downwards 0: This value will make the drone stay at the same position vertically; 1048576000: The converted value 0.25 will make the drone fly upwards with 1056964608: The converted value 0.5 will make the drone fly upwards with 1061158912: The converted value 0.75 will make the drone fly upwards with 1065353216: The maximum converted value 1 will make the drone fly upwards Yaw argument value sets the percentage of the maximum angular speed as configured

in the drone parameters for drone’s right-left spin. Negative percentage value will make the drone spin left; Positive percentage value will make the drone spin right; -1082130432: The minimum converted value -1 will make the drone spin left -1086324736: The converted value -0.75 will make the drone spin left with -1090519040: The converted value -0.5 will make the drone spin left with -1098907648: The converted value -0.25 will make the drone spin left with 0: This value will make the drone stay at the same position horizontally; 1048576000: The converted value 0.25 will make the drone spin right with 1056964608: The converted value 0.5 will make the drone spin right with half 1061158912: The converted value 0.75 will make the drone spin right with 1065353216: The maximum converted value 1 will make the drone spin rightDrone SDK for .NET Complete SDK for AR. An application for flying the Parrot AR drone in Windows.