Comments for Twisted world of Esden http://www.esden.net/blog My small window to the world... Sun, 26 Feb 2012 22:51:17 +0000 http://wordpress.org/?v=2.9 hourly 1 Comment on How to build arm gnu gcc toolchain for Mac OS X [Updated 8x] by esden http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/WdOQW-Z0CNg/ esden Sun, 26 Feb 2012 22:51:17 +0000 http://www.esden.net/blog/?p=131#comment-155803 @pacman: that is only partly a joke, I actually meant it there. It is only the build directory that you are doing it in. @Tormod: Yes it does not really make sense I agree, it was something I carried over from other documentations how to build the toolchain. @pacman: that is only partly a joke, I actually meant it there. It is only the build directory that you are doing it in.

@Tormod: Yes it does not really make sense I agree, it was something I carried over from other documentations how to build the toolchain.

]]> http://www.esden.net/blog/2009/02/26/how-to-build-arm-gnu-gcc-toolchain-for-mac-os-x/comment-page-1/#comment-155803 Comment on Open-BLDC and the CLogic story by esden http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/hB6M_yppuCI/ esden Sun, 26 Feb 2012 22:39:27 +0000 http://www.esden.net/blog/?p=456#comment-155802 @naimis: No sadly I did not use open-bldc on any of those projects as they are price prohibitive. There is no space for $150 motor controller in a $400 aircraft sadly. :( Yes each motor is getting one stm32. I know several people did combine the control into one mcu or even one board. I really don't like those solutions at all. It is a single point of failure, as well as the timing requirements become even more complicated if you have to drive two motors from one mcu. Also controlling the motor controllers using PWM as signal input is not as bad as you may think. It is really very robust to EMI noise. The only disadvantage is that you don't get any data back from the controller about it's current speed and torque. That would be very useful information to the controller. @Angelo Rosselli: No, the implementation is for cortex m3 stm32 mcu. I am not planning to port the code to atmega. @naimis: No sadly I did not use open-bldc on any of those projects as they are price prohibitive. There is no space for $150 motor controller in a $400 aircraft sadly. :( Yes each motor is getting one stm32. I know several people did combine the control into one mcu or even one board. I really don’t like those solutions at all. It is a single point of failure, as well as the timing requirements become even more complicated if you have to drive two motors from one mcu. Also controlling the motor controllers using PWM as signal input is not as bad as you may think. It is really very robust to EMI noise. The only disadvantage is that you don’t get any data back from the controller about it’s current speed and torque. That would be very useful information to the controller.

@Angelo Rosselli: No, the implementation is for cortex m3 stm32 mcu. I am not planning to port the code to atmega.

]]> http://www.esden.net/blog/2011/05/16/open-bldc-and-the-clogic-story/comment-page-1/#comment-155802 Comment on Open-BLDC V0.1 boards are here by esden http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/npykjBN09Go/ esden Sun, 26 Feb 2012 22:38:17 +0000 http://www.esden.net/blog/?p=296#comment-155801 PCB Cart is the service I use. PCB Cart is the service I use.

]]> http://www.esden.net/blog/2009/08/05/open-bldc-v01-boards-are-here/comment-page-1/#comment-155801 Comment on Selecting parts for Open-BLDC power stage prototype by esden http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/Xx45bFVEiP4/ esden Sun, 26 Feb 2012 22:37:35 +0000 http://www.esden.net/blog/?p=157#comment-155800 Look at Github: https://github.com/open-bldc/open-bldc and no there is no atmega code and there won't be. Look at Github: https://github.com/open-bldc/open-bldc and no there is no atmega code and there won’t be.

]]> http://www.esden.net/blog/2009/03/15/selecting-parts-for-open-bldc-power-stage-prototype/comment-page-1/#comment-155800 Comment on Selecting parts for Open-BLDC power stage prototype by OMG http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/CoGB8IlCrkw/ OMG Sun, 26 Feb 2012 19:31:25 +0000 http://www.esden.net/blog/?p=157#comment-155792 Sorry bad but this BLDC open source does not seem open source . cant find any schematic / code for the Atmega - this Su* Sorry bad but this BLDC open source does not seem open source . cant find any schematic / code for the Atmega – this Su*

]]> http://www.esden.net/blog/2009/03/15/selecting-parts-for-open-bldc-power-stage-prototype/comment-page-1/#comment-155792 Comment on Open-BLDC V0.1 boards are here by msr http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/cdyUKM1prsw/ msr Tue, 07 Feb 2012 21:53:40 +0000 http://www.esden.net/blog/?p=296#comment-154812 The boards look great! What service did you use? The boards look great! What service did you use?

]]> http://www.esden.net/blog/2009/08/05/open-bldc-v01-boards-are-here/comment-page-1/#comment-154812 Comment on Open-BLDC and the CLogic story by Angelo Rosselli http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/SuL6NsOf28U/ Angelo Rosselli Thu, 02 Feb 2012 17:28:55 +0000 http://www.esden.net/blog/?p=456#comment-154573 I saw your Kit oBLDC0002 and I found it very interesting. I would like to know if it is possible for me to have the Software for ATMega8. Thank you in advance, Angelo Rosselli I saw your Kit oBLDC0002 and I found it very interesting. I would like to know if it is possible for me to have the Software for ATMega8. Thank you in advance, Angelo Rosselli

]]> http://www.esden.net/blog/2011/05/16/open-bldc-and-the-clogic-story/comment-page-1/#comment-154573 Comment on Open-BLDC and the CLogic story by naimis http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/5lWlQRRG0F8/ naimis Thu, 12 Jan 2012 04:49:28 +0000 http://www.esden.net/blog/?p=456#comment-151755 Did you use the OBLDC controller in the quadshot or quadcopter projects? Do you use one ARM per motor, or are you able to control multiple motors with a single processor? I was wondering if micros could drive multiple BLDC motors at the same time, but my first google searches turned up what looked like someone's academic thesis on the topic, so it seemed likely that it was a lot more difficult a problem than I thought. Most of this line of thought came about when I bought an off-the-shelf ESC and realized that you effectively controlled it with an analog signal which I didn't like very much. The ideal situation would be to be able to control multiple motors from a single micro, or, barring that, digital command and control from a central unit. Though I wouldn't be surprised to learn digital control had its own issues. Did you use the OBLDC controller in the quadshot or quadcopter projects? Do you use one ARM per motor, or are you able to control multiple motors with a single processor? I was wondering if micros could drive multiple BLDC motors at the same time, but my first google searches turned up what looked like someone’s academic thesis on the topic, so it seemed likely that it was a lot more difficult a problem than I thought.

Most of this line of thought came about when I bought an off-the-shelf ESC and realized that you effectively controlled it with an analog signal which I didn’t like very much. The ideal situation would be to be able to control multiple motors from a single micro, or, barring that, digital command and control from a central unit. Though I wouldn’t be surprised to learn digital control had its own issues.

]]> http://www.esden.net/blog/2011/05/16/open-bldc-and-the-clogic-story/comment-page-1/#comment-151755 Comment on Open-BLDC V0.3 Hardware Based Closed Loop Control by Daan http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/cO2gkJc5pBQ/ Daan Thu, 01 Dec 2011 11:49:25 +0000 http://www.esden.net/blog/?p=440#comment-148397 Great work! Can this controllor work for our skelter to control hub-motor? Hope te hear from you! daan Great work!

Can this controllor work for our skelter to control hub-motor?

Hope te hear from you!
daan

]]> http://www.esden.net/blog/2010/09/19/open-bldc-v0-3-hardware-based-closed-loop-control/comment-page-1/#comment-148397 Comment on Open-BLDC V0.3 Hardware Based Closed Loop Control by ky3orr http://feedproxy.google.com/~r/CommentsForTwistedWorldOfEsden/~3/pC8PuXNX0a4/ ky3orr Tue, 16 Aug 2011 08:56:50 +0000 http://www.esden.net/blog/?p=440#comment-141107 Nice job! Right now I am sitting on implementation of BLDC driver for my future RC plane. I am happy that iI found open-bldc! Maybe I will contribute :) Nice job!
Right now I am sitting on implementation of BLDC driver for my future RC plane.
I am happy that iI found open-bldc!

Maybe I will contribute :)

]]> http://www.esden.net/blog/2010/09/19/open-bldc-v0-3-hardware-based-closed-loop-control/comment-page-1/#comment-141107