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ModeratorPermalink Reply by John Church on June 19, 2011 at 10:15am

I just stumbled upon your creation while browsing Google for parts. Very nice concept! How is it holding up? Do you fly it much?  (you should make this a blog post  :)    )

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Permalink Reply by Tumba on June 19, 2011 at 11:03am

Hi John,

I fly the copter often. He is designd for the IMAV 2011 competition:

http://www.imav2011.org/images/stories/documents/imav2011-summeredi...

But I need more traing to fly similar to my team member William:

http://vimeo.com/22988846

Currently I performe the landing outdoor at the two lower propeller. Indoor I use a cage.

 

Best regards Tumba

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Permalink Reply by Sebastian Gralla on June 19, 2011 at 12:35pm

how to use this satellite reciever?

would be great if you could share that part of your code ;-)

 

anyways great work, just found that on the MK-Forums ;-)

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Permalink Reply by Tumba on June 19, 2011 at 2:37pm

First you have to program the DX7 transmitter to "acro" and "aux2" to "rocker".

Then you have with the code below the values: rc_lift (0..680), rc_pitch(-340..340) , rc_yaw(-340..340), rc_roll(-340..340), rc_s1(0,1,2), rc_s2(0,1). Here is the DX7 related code:

/* ------------------------------------------------------------------------ */

/* define global values */

/* ------------------------------------------------------------------------ */

int rc_lift, rc_pitch, rc_yaw, rc_roll, rc_s1, rc_s2;

unsigned long uart_time_old;

unsigned int i, z[16];

/* ------------------------------------------------------------------------ */

/* setup procedure */

/* ------------------------------------------------------------------------ */

void setup()

{

uart_time_old= 0;

 

for (i= 1; i<=16; i= i+1) z[i]= 0;

i= 1;

 

Serial.begin(115200); /* DX7 satellite */

}

/* ------------------------------------------------------------------------ */

/* read the DX7 satellite procedure */

/* ------------------------------------------------------------------------ */

void read_rc()

{

unsigned long uart_time;

unsigned int uart_dt;

 

uart_time= micros();

uart_dt= int(uart_time - uart_time_old);

uart_time_old= uart_time;

 

if (uart_dt > 8000) i= 1;

else i= i+1;

z[i]= Serial.read();

 

if (i == 16)

{

rc_pitch= int(256 * z[ 7] + z[ 8]) - 2560;

rc_roll= 1536 - int(256 * z[ 3] + z[ 4]);

rc_yaw= 3582 - int(256 * z[ 9] + z[10]);

rc_lift= 854 - int(256 * z[11] + z[12]);

 

rc_s1= 0;

if (int(256 * z[ 5] + z[ 6]) < 5700) rc_s1= 1;

if (int(256 * z[ 5] + z[ 6]) < 5500) rc_s1= 2;

rc_s2= 0;

if (int(256 * z[13] + z[14]) < 4600) rc_s2= 1;

 

i= 1;

}

}

/* ------------------------------------------------------------------------ */

/* global loop procedure */

/* ------------------------------------------------------------------------ */

void loop()

{

while (Serial.available() == 0)

{

read_imu();

calc_imu();

calc_mot();

run_mot();

delay(2);

}

 

read_rc();

}

 

/* ------------------------------------------------------------------------ */

/* end of program */

/* ------------------------------------------------------------------------ */

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Permalink Reply by Sebastian Gralla on June 19, 2011 at 2:50pm

thanks for that!

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3D RoboticsPermalink Reply by Chris Anderson on June 19, 2011 at 2:45pm

Amazing! This was worth a full blog post, BTW. Don't be shy--you've done terrific work that deserves the biggest audience.

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