Eibriel http://www.eibriel.com Digital Art and VFX|Arte Digital y Efectos Visuales Sat, 12 May 2012 18:06:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Motion Control with Blender, the H Bridge http://www.eibriel.com/2012/05/09/motion-control-with-blender-the-h-bridge/ http://www.eibriel.com/2012/05/09/motion-control-with-blender-the-h-bridge/#comments Wed, 09 May 2012 05:53:32 +0000 Eibriel http://www.eibriel.com/?p=1003 Hi again! I’m doing my firsts steps on Real electronics, burning my fingers, working with melted metals, a whole adventure!

Here is my design, made with Inkscape. It’s colorfull, but is wrong, the components are flipped.

Inkscape Design

Inkscape Design

The printed pcb using a photocopied print.

Printed PCB

Printed PCB

With components! Solder it on the draw side is a Nightmare!

PCB with components

PCB with components

The bridge in action. (controlled with Blender, of course :)

The L293B integrated needs a heat dissipater. I’ll be adding it soon.

Regards!

]]> http://www.eibriel.com/2012/05/09/motion-control-with-blender-the-h-bridge/feed/ 0 Camera Motion Control, controlling steppers with Blender, tutorial http://www.eibriel.com/2012/05/06/camera-motion-control-controlling-steppers-with-blender-tutorial/ http://www.eibriel.com/2012/05/06/camera-motion-control-controlling-steppers-with-blender-tutorial/#comments Sun, 06 May 2012 22:49:48 +0000 Eibriel http://www.eibriel.com/?p=989 Hi everyone! I like to share my advances on the topic “Motion Control with Blender”. So here is a step by step tutorial, Enjoy! This tutorial will be focused on Linux, but with minus changes works on Win too.

Eibrielex Capture

Eibrielex Capture

Software

  • Blender
  • Arduino IDE (version 022, download it here, on version 1.0 don’t work)
  • Eibrielex Addon (whit Arduino Library, Addon and Blend file, here [attachments tab])
  • Eibrielex library to control steppers
  • Arduino Sketch (to load on the Arduino board, here)
  • Blend File

Hardware

  • PC
  • Arduino Board (I’ve tested my configuration on Arduino Uno)
  • L293D Integrated
  • Breadboard (or something to hold the components)
  • Wires
  • Stepper
  • A power supply for the steppers (5 to 24v)

Hardware Setup

First we will setup the hardware, first you need to connect the components following this scheme:

Bipolar Stepper Schematic

Bipolar Stepper Schematic

By default is using pins: 6, 7, 8, 9 for motor A, and 10, 11, 12, 13 for motor B.

Now you can install my stepper library. (copy the “Eibrielex” folder on “/your-arduino022-path/libraries”)

And burn the Sketch on your Arduino board (remember to use Arduino IDE 022).

If you have problems try following this steps:

Find the file “your-arduino-path/hardware/arduino/cores/arduino/wiring.h”, and comment (line 79~):

// #define round(x)     ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))

Software Setup

First we will setup the software, and the communication with the Arduino board.

Download the Blender Addon and install it (the addon will be on Animation tab.

Load the blend file, and follow this instructions:

The serial port must be the Arduino port, you can find it on the Arduino IDE software (on Win look like “COM3″).

The RX and TX leds must be blinking on the board, showing the data flow.

If the stepper is properly connected will be turning following the blender animation.

That is it!

Notes

  • The Addon will assume 200 cycles per turn on four stepper.
  • If you turn on “Position” property, that axis will not work.
  • The properties “Calibrated” and “Live, Stop Motion, Timelapse” don’t work for now.
  • The movements are relatives, not absolutes. So, if you stop the playback, and start again from first frame, the stepper will take the last position as first position. (In other words, every time you jump frames the system lost calibration)

The BlenderArtist thread.

Let me know if it work for you!

]]> http://www.eibriel.com/2012/05/06/camera-motion-control-controlling-steppers-with-blender-tutorial/feed/ 0 Motion Control with Blender, Arduino One and Three Steppers http://www.eibriel.com/2012/04/14/motion-control-with-blender-arduino-one-and-three-steppers/ http://www.eibriel.com/2012/04/14/motion-control-with-blender-arduino-one-and-three-steppers/#comments Sat, 14 Apr 2012 20:31:09 +0000 Eibriel http://www.eibriel.com/?p=985 Untested Fritzing Schematic to control three steppers with Arduino One (plus three inputs, as Home sensor)

Fritzing Schematic

Fritzing Schematic

Will it work? well.. I don’t know yet :P

]]> http://www.eibriel.com/2012/04/14/motion-control-with-blender-arduino-one-and-three-steppers/feed/ 0 Really old Titanic animation http://www.eibriel.com/2012/04/09/really-old-titanic-animation/ http://www.eibriel.com/2012/04/09/really-old-titanic-animation/#comments Mon, 09 Apr 2012 04:44:49 +0000 Eibriel http://www.eibriel.com/?p=981 A bit of history

Cameron has restored Titanic, so I restored a tiny animation I did some time after see the movie :P

Is done on Autodesk 3D Studio 4 (without “Max”) software running on Microsoft DOS on a PC 486. Is unfinished, due some render issues.

Titanic .FLC

Titanic .FLC

3D Studio 4

3D Studio 4

Enjoy!

]]> http://www.eibriel.com/2012/04/09/really-old-titanic-animation/feed/ 0 Motion Control with Blender, two steppers http://www.eibriel.com/2012/04/06/motion-control-with-blender-two-steppers/ http://www.eibriel.com/2012/04/06/motion-control-with-blender-two-steppers/#comments Fri, 06 Apr 2012 13:19:54 +0000 Eibriel http://www.eibriel.com/?p=976 I’ve optimized the serial connection between Blender and Arduino One, so now I can control two steppers with perfect synchronization and (apparently) no data lost. The left stepper have 48 steps per revolution and is working on halftep mode, the right one have 200 steps and is working with 16 microsteps.

Enjoy!

]]> http://www.eibriel.com/2012/04/06/motion-control-with-blender-two-steppers/feed/ 0 Motion Control – Controlling a Stepper with Blender. Part 4 http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-4/ http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-4/#comments Sun, 01 Apr 2012 00:29:53 +0000 Eibriel http://www.eibriel.com/?p=971 Some advances on my Motion Control system, now with reduction (3x), so, even more smoothness and movement quality.

First rig attempt

First rig attempt

Now I’ve tested to shot two characters, one at 4x speed and other at 2x speed, and make appear that both have been shotted at the same time. (sadly the light change, so the effect don’t work very well, and the composition is not finished).

And the video at 1x speed (Singer: 1x – Guitarist 2x)

Regards!!

]]> http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-4/feed/ 0 Motion Control – Controlling a Stepper with Blender. Part 3 http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-3/ http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-3/#comments Sat, 31 Mar 2012 03:47:16 +0000 Eibriel http://www.eibriel.com/?p=966 First test :P , the camera put just on top the stepper.

I’ve almost finished the library that allows to control a stepper directly with Blender. Now the frames per second are coordinated between Blender and Arduino.

Starting to planning some structure :)

Structure

Structure

]]> http://www.eibriel.com/2012/03/31/motion-control-controlling-a-stepper-with-blender-part-3/feed/ 0 Motion Control – Controlling a Stepper with Blender. Part 2 http://www.eibriel.com/2012/03/27/motion-control-controlling-a-stepper-with-blender-part-2/ http://www.eibriel.com/2012/03/27/motion-control-controlling-a-stepper-with-blender-part-2/#comments Tue, 27 Mar 2012 13:13:41 +0000 Eibriel http://www.eibriel.com/?p=961 Now using microsteping (16), smother movements, better motor temperature, lowest noise, and some minor improvements on how Arduino interpret the animation.

Enjoy!

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