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  • Profile Type: Regular Member
  • Profile Views: 1,968 views
  • Friends: 0 friends
  • Last Update: January 19, 2015
  • Joined: December 28, 2014
  • Updates
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  • Albums(2)
  • Forum Posts(4)

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  • Hubraum 6.8
    Hubraum 6.8 replied to a topic in the forum Support:
    Tamás Fábián said:
    This alsomeans that SBrick might turn on the motors more quickly than the IR recever, and therefore the noise might me louder.
    Moreover, the IR receiver only applies PWM duty cycles other than 0 and 100% (where there's no noise, but...  more
    Tamás Fábián said:
    This alsomeans that SBrick might turn on the motors more quickly than the IR recever, and therefore the noise might me louder.
    Moreover, the IR receiver only applies PWM duty cycles other than 0 and 100% (where there's no noise, but this is the case with SBrick too) if you use it with a 8879 remote.
    Additionally, SBrick can utilize 255 PWM levels. The first 20-30 levels are not really useful with PF motors, since they won't even start. At these levels, there is no motor noise to cover the beeping. Once the motors are running at a reasonable rate, their noise usually masks the tweeting.
    If you're really annoyed by the noise, I can do a few experiments to either lower the PWM frequency (lower sounds are harder to radiate, and are masked better by the motors), or increase it (with a bit of luck, above the ~20 KHz limit of the human ear). Since this can affect power efficiency (higher the frequency, higher the switching loss, there's more heat), such parameter should be allow...    less
    • January 19, 2015
  • Hubraum 6.8
    Hubraum 6.8 Got the sbrick! Now let's put that gearbox in the truck for some action!
    • January 14, 2015
  • Hubraum 6.8
    Hubraum 6.8 replied to a topic in the forum Support:
    Just got my 4 sbricks yesterday. Firmware updated and all working fine (maybe a firmware version control for updating would be fine as I seem to be able to indefinitely update the FW).

    What I noticed is that all engines conected to an sbrick make a...  more
    Just got my 4 sbricks yesterday. Firmware updated and all working fine (maybe a firmware version control for updating would be fine as I seem to be able to indefinitely update the FW).

    What I noticed is that all engines conected to an sbrick make a weird electric current sound noise. When connected to a Lego IR they make no noise. Any Ideas why? Reasons to worrie? So far it's only annoying.  
    • January 14, 2015
  • Hubraum 6.8
    Hubraum 6.8 replied to a topic in the forum Support:
    Hi there
    Any chance you will release an iOS App version that can run on the old ipod touch 3g's (ios 4.3.3)?
    My kids have this version and it would be great if the could use their ipod's to play with the sbrick Lego models rather than having to use my...  more
    Hi there
    Any chance you will release an iOS App version that can run on the old ipod touch 3g's (ios 4.3.3)?
    My kids have this version and it would be great if the could use their ipod's to play with the sbrick Lego models rather than having to use my phone or ipad.
     
    Thanks  
    • January 6, 2015
  • Hubraum 6.8
    Hubraum 6.8 replied to a topic in the forum Suggestions:
    I would like to see a 3x3 studless size version.The more conection points to attache the Receiver the better.All my builds are desigend to fit the new Lego PF engines that are having a 3x3 face.
    The original IR as well as the SBrick will always require...  more
    I would like to see a 3x3 studless size version.The more conection points to attache the Receiver the better.All my builds are desigend to fit the new Lego PF engines that are having a 3x3 face.
    The original IR as well as the SBrick will always require some weird tweaking into the models as they are a 4x4 base design. Maybe the next SBrick could me longer but only featuring the 3x3 face (similar like the PF M or L-Motor shapes).  
    • December 28, 2014
  • Hubraum 6.8
    Hubraum 6.8 has just signed up. Say hello!
    • December 28, 2014
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Personal Information

  • First Name Hubraum
  • Last Name 6.8

Contact Information

  • Website http://www.brickshelf.com/cgi-bin/gallery.cgi?m=Hubraum

Personal Details

  • About Me Since I have re-discovered the fun in building Lego Technic models after more than 25 years I would like to share my models with you.

    I will post my own creations and redesigns of existing Lego Technic models on Brickshelf.com and MOCpages.com. As the name suggest I will be focusing on cars and trucks.

    My aim is to supply my models with LDD plans so you can rebuild and develop them further. I hope you will find over time some good ideas and designs that you can take further and enjoy.

    My only wish and rules are: that if you use my files and models you name and link them back to my name and page and never sell the LDD files nore claim ownership for them. All my ideas are free to use for privat fun.

    Hope you enjoy

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Forum Posts

  • January 19, 2015 10:12 PM CET
    in the topic Technical questions in the forum Support
    Tamás Fábián said: This alsomeans that SBrick might turn on the motors more quickly than the IR recever, and therefore the noise might me louder. Moreover, the IR receiver only applies PWM duty cycles other than 0 and 100% (where there's no noise, but this is the case with SBrick too) if you use it with a 8879 remote. Additionally, SBrick can utilize 255 PWM levels. The first 20-30 levels are not really useful with PF motors, since they won't even start. At these levels, there is no motor noise to cover the beeping. Once the motors are running at a reasonable rate, their noise usually masks the tweeting. If you're really annoyed by the noise, I can do a few experiments to either lower the PWM frequency (lower sounds are harder to radiate, and are masked better by the motors), or increase it (with a bit of luck, above the ~20 KHz limit of the human ear). Since this can affect power efficiency (higher the frequency, higher the switching loss, there's more heat), such parameter should be allow tweaking (let the user to override it). (Hm, I've looked at the code, and the lowest frequency is about 490Hz, the highest is well above 100KHz. DRV8833's rise and fall time is 160 & 180ns, so it might be able to work at that frequency.) Hi If a silent sBrick is possible I'd be happy. It is somewhat annoying tho hear all the current noise. Especially when multiple engines run at the same time. Just done my Excavator and when it drives an turns upper part and crane arm it sounds more like a space thing rather than an excavator. However I like the idea of sound control. That would be a great next product: a controlable LEGO loke loudspeaker giving the "s" a whole new meaning.
  • January 14, 2015 10:05 PM CET
    in the topic Technical questions in the forum Support
    Just got my 4 sbricks yesterday. Firmware updated and all working fine (maybe a firmware version control for updating would be fine as I seem to be able to indefinitely update the FW). What I noticed is that all engines conected to an sbrick make a weird electric current sound noise. When connected to a Lego IR they make no noise. Any Ideas why? Reasons to worrie? So far it's only annoying.
  • January 6, 2015 9:13 PM CET
    in the topic SBrick iOS App in the forum Support
    Hi there Any chance you will release an iOS App version that can run on the old ipod touch 3g's (ios 4.3.3)? My kids have this version and it would be great if the could use their ipod's to play with the sbrick Lego models rather than having to use my phone or ipad.   Thanks
  • December 28, 2014 3:00 PM CET
    in the topic Future hardware addons in the forum Suggestions
    I would like to see a 3x3 studless size version.The more conection points to attache the Receiver the better.All my builds are desigend to fit the new Lego PF engines that are having a 3x3 face. The original IR as well as the SBrick will always require some weird tweaking into the models as they are a 4x4 base design. Maybe the next SBrick could me longer but only featuring the 3x3 face (similar like the PF M or L-Motor shapes).
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