Circulair PCB

On 09/24/2013 07:23 AM, Ruud Rensen wrote:

Hi Jorge.

 

I have to desgin a round PCB with 32pcs 3mm LED's on the outer side in a

circle.

The diagonal size is 65 mm.

For this many LED's it's easy to write a program to produce a script.

Attached is a program written in C that will do this.  Also attached is

the Eagle script that this program produces.  The radius is a bit small,

but it's good enough for demonstration.  Adjust the center point and the

radius of the circle as necessary.

Since this forum has problems with attachments making it to the web

portal, I have included the source inline.

C Program:

/*

• Program to produce an Eagle script to position

• a number of LED's in a circle about a point.

*/

#include <stdio.h>

#define LED_COUNT   32

// Dimensions are in mm and degrees

// Center of circle

#define CENTER_X    20.0

#define CENTER_Y    20.0

// Radius of circle

#define RADIUS      20.0

#define ARC_STEP    (360.0 / LED_COUNT)

int main() {

    int led;

    printf("Grid mm;\n");

    printf("Mark (%.2f %2.f);\n",

        CENTER_X, CENTER_Y);

    for (led = 0; led < LED_COUNT; ++led) {

        printf("Move LED%d (P%.2f %.2f);\n",

            led + 1,

            RADIUS,

            ARC_STEP * led

            );

        printf("Rotate =R%.2f 'LED%d';\n",

            ARC_STEP * led,

            led + 1);

    }

    return 0;

}

// vim: set ts=4 sw=4 et ai:

The Eagle script generated:

Grid mm;

Mark (20.00 20);

Move LED1 (P20.00 0.00);

Rotate =R0.00 'LED1';

Move LED2 (P20.00 11.25);

Rotate =R11.25 'LED2';

Move LED3 (P20.00 22.50);

Rotate =R22.50 'LED3';

Move LED4 (P20.00 33.75);

Rotate =R33.75 'LED4';

Move LED5 (P20.00 45.00);

Rotate =R45.00 'LED5';

Move LED6 (P20.00 56.25);

Rotate =R56.25 'LED6';

Move LED7 (P20.00 67.50);

Rotate =R67.50 'LED7';

Move LED8 (P20.00 78.75);

Rotate =R78.75 'LED8';

Move LED9 (P20.00 90.00);

Rotate =R90.00 'LED9';

Move LED10 (P20.00 101.25);

Rotate =R101.25 'LED10';

Move LED11 (P20.00 112.50);

Rotate =R112.50 'LED11';

Move LED12 (P20.00 123.75);

Rotate =R123.75 'LED12';

Move LED13 (P20.00 135.00);

Rotate =R135.00 'LED13';

Move LED14 (P20.00 146.25);

Rotate =R146.25 'LED14';

Move LED15 (P20.00 157.50);

Rotate =R157.50 'LED15';

Move LED16 (P20.00 168.75);

Rotate =R168.75 'LED16';

Move LED17 (P20.00 180.00);

Rotate =R180.00 'LED17';

Move LED18 (P20.00 191.25);

Rotate =R191.25 'LED18';

Move LED19 (P20.00 202.50);

Rotate =R202.50 'LED19';

Move LED20 (P20.00 213.75);

Rotate =R213.75 'LED20';

Move LED21 (P20.00 225.00);

Rotate =R225.00 'LED21';

Move LED22 (P20.00 236.25);

Rotate =R236.25 'LED22';

Move LED23 (P20.00 247.50);

Rotate =R247.50 'LED23';

Move LED24 (P20.00 258.75);

Rotate =R258.75 'LED24';

Move LED25 (P20.00 270.00);

Rotate =R270.00 'LED25';

Move LED26 (P20.00 281.25);

Rotate =R281.25 'LED26';

Move LED27 (P20.00 292.50);

Rotate =R292.50 'LED27';

Move LED28 (P20.00 303.75);

Rotate =R303.75 'LED28';

Move LED29 (P20.00 315.00);

Rotate =R315.00 'LED29';

Move LED30 (P20.00 326.25);

Rotate =R326.25 'LED30';

Move LED31 (P20.00 337.50);

Rotate =R337.50 'LED31';

Move LED32 (P20.00 348.75);

Rotate =R348.75 'LED32';

On 05/14/2014 09:01 AM, Chuck Huber wrote:

On 09/24/2013 07:23 AM, Ruud Rensen wrote:

Hi Jorge.

 

I have to desgin a round PCB with 32pcs 3mm LED's on the outer side in a

circle.

The diagonal size is 65 mm.

For this many LED's it's easy to write a program to produce a script.

Attached is a program written in C that will do this.

I might also add that this could very easily have been done in a ULP

rather than a C program.

HTH,

    - Chuck

The ULP version is below.

HTH,

    - Chuck

On 05/14/2014 09:03 AM, Chuck Huber wrote:

On 05/14/2014 09:01 AM, Chuck Huber wrote:

On 09/24/2013 07:23 AM, Ruud Rensen wrote:

Hi Jorge.

 

I have to desgin a round PCB with 32pcs 3mm LED's on the outer side in a

circle.

The diagonal size is 65 mm.

For this many LED's it's easy to write a program to produce a script.

Attached is a program written in C that will do this.

I might also add that this could very easily have been done in a ULP

rather than a C program.

/*

• Program to produce an Eagle script to position

• a number of LED's in a circle about a point.

*/

int LED_COUNT = 32;

// Dimensions are in mm and degrees

// Center of circle

real CENTER_X = 20.0;

real CENTER_Y = 20.0;

// Radius of circle

real RADIUS = 20.0;

real ARC_STEP = (360.0 / LED_COUNT);

string exitScript;

string tmp;

    int led;

    sprintf(tmp, "Grid mm;\n");

    exitScript += tmp;

    sprintf(tmp, "Mark (%.2f %2.f);\n",

        CENTER_X, CENTER_Y);

    exitScript += tmp;

    for (led = 0; led < LED_COUNT; ++led) {

        sprintf(tmp, "Move LED%d (P%.2f %.2f);\n",

            led + 1,

            RADIUS,

            ARC_STEP * led

            );

        exitScript += tmp;

        sprintf(tmp, "Rotate =R%.2f 'LED%d';\n",

            ARC_STEP * led,

            led + 1);

        exitScript += tmp;

    }

    exit(exitScript);

// vim: set ts=4 sw=4 et ai:

One correction below:

On 05/14/2014 09:15 AM, Chuck Huber wrote:

/*

 

• Program to produce an Eagle script to position

 

• a number of LED's in a circle about a point.

*/

 

int LED_COUNT = 32;

 

// Dimensions are in mm and degrees

 

// Center of circle

real CENTER_X = 20.0;

real CENTER_Y = 20.0;

 

// Radius of circle

real RADIUS = 20.0;

 

real ARC_STEP = (360.0 / LED_COUNT);

 

string exitScript;

string tmp;

 

    int led;

 

    sprintf(tmp, "Grid mm;\n");

    exitScript += tmp;

 

    sprintf(tmp, "Mark (%.2f %2.f);\n",

The second format specified should be "%.2f" instead of "%2.f".  This

one slipped by.  Sorry.

        CENTER_X, CENTER_Y);

    exitScript += tmp;

 

    for (led = 0; led < LED_COUNT; ++led) {

        sprintf(tmp, "Move LED%d (P%.2f %.2f);\n",

            led + 1,

            RADIUS,

            ARC_STEP * led

            );

        exitScript += tmp;

 

        sprintf(tmp, "Rotate =R%.2f 'LED%d';\n",

            ARC_STEP * led,

            led + 1);

        exitScript += tmp;

    }

 

    exit(exitScript);

 

// vim: set ts=4 sw=4 et ai:

 

One correction below:

On 05/14/2014 09:15 AM, Chuck Huber wrote:

/*

 

• Program to produce an Eagle script to position

 

• a number of LED's in a circle about a point.

*/

 

int LED_COUNT = 32;

 

// Dimensions are in mm and degrees

 

// Center of circle

real CENTER_X = 20.0;

real CENTER_Y = 20.0;

 

// Radius of circle

real RADIUS = 20.0;

 

real ARC_STEP = (360.0 / LED_COUNT);

 

string exitScript;

string tmp;

 

    int led;

 

    sprintf(tmp, "Grid mm;\n");

    exitScript += tmp;

 

    sprintf(tmp, "Mark (%.2f %2.f);\n",

The second format specified should be "%.2f" instead of "%2.f".  This

one slipped by.  Sorry.

        CENTER_X, CENTER_Y);

    exitScript += tmp;

 

    for (led = 0; led < LED_COUNT; ++led) {

        sprintf(tmp, "Move LED%d (P%.2f %.2f);\n",

            led + 1,

            RADIUS,

            ARC_STEP * led

            );

        exitScript += tmp;

 

        sprintf(tmp, "Rotate =R%.2f 'LED%d';\n",

            ARC_STEP * led,

            led + 1);

        exitScript += tmp;

    }

 

    exit(exitScript);

 

// vim: set ts=4 sw=4 et ai: