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Big Liz Maker Faire GrEATER-bot

This is an on-going project, the date and time reflect where and when the final project will be displayed.  This Meet-up has been scheduled as a means to facilitate discussion among the members.

The project leader is Sergei.   The idea is to create a Greeter-bot for the OC Mini Maker Faire using C+ coding, servo motors, camera, speakers and other elements.

 

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  • bequi

    What a fabulous project! Thanks for bringing it to the OC Mini Maker Faire, it was a big hit!

    October 27, 2013

  • bequi

    Looking at Sergei's photos it appears he has a good start on the skin! There are photos of his mock-up there too.

    June 12, 2013

  • bequi

    Hey Everybody,

    We are getting closer to the OCMMF and I have other projects on my plate squeezing out my time for working on this project. If anyone would like to take over the aesthetics portion, creating a shell to house the mechanics please do. Sergei has a great idea for the appearance of the GrEATER bot, I have his mock up, let me know and we'll work out a way for me to transfer it to you if you want.

    1 · June 12, 2013

  • Sergei G.

    Hi All,

    here is the first cut of Big Liz code (both Arduino and Win7/VS2012)
    http://trackroamer.com/Download/BigLizGreater.zip

    Arduino UNO is connected via USB to PC (edit ArduinoComm.cs for port number). PC program commands Arduino via serial-over-USB. Only "pan" channel works at the moment.

    Comment here if you want to contribute to the software; we all can meet and set up development environment for every person.

    I will be adding code for camera and color recognition soon.

    May 22, 2013

  • Sergei G.

    Hi All,

    Doug and I were making the rotating foundation of Big Liz's head (a.k.a. turret). I snapped some photos of the turret - http://heysmile.smugmug.com/Hobbies/Big-Liz-Maker-Faire-GrEATER/28683993_rtfRHn You can see a 12V motor, tensioner and a feedback 5K pot; Doug masterfully printed the white semi-wheel to accommodate the belt; we have a mounting bracket on top of the rotating part – it is strong and provides plenty of room for mounting head and equipment (bubble machine and camera). I will make the Arduino part work in the next day or so, with some Windows test rig to have the turret controlled from a PC. I'll try to publish the code as soon as I have something working, so that everybody could contribute.

    Cheers,
    -- Sergei

    May 18, 2013

  • Sergei G.

    There are two parts on the "mechanical" side of the project - the body and the pan-tilt "neck&head" platform. I guess Doug is right that we can use any stable body; I was thinking of a "tripod" made of two near-triangle shaped plywood pieces, on a hinge. That would be cheap, sturdy and would allow our Creative experts to go wild with the shape; paint and LEDs will make it fancy. We can size it as we want.
    Parting with a real tripod would be too much of a trauma for me :-)
    Also, I never was good at dressing/draping things; also it can get pricey... Begui - what do you think from the Creative side of things? Maybe I could visit local Salv Army store for ideas...

    March 29, 2013

    • Sergei G.

      Thanks for your offer, Andy - we will need all help we can get! Bequi - where are we with the creative concept? Doug and I are a bit busy with our 3D printers - we are about to finish, and can join in. I also have a bubble machine in the mail, and a camera too.

      1 · April 21, 2013

    • bequi

      I've been flooded with OCMMF adjuct events and personal life issues. I have your model sitting on my counter staring at me and telling me to get working on it. However, it's milling around in the back of my mind and I have various design ideas I need to put down on paper.

      April 21, 2013

  • Doug B

    See you guys today at the Tinkerers meetup.

    March 31, 2013

  • Sergei G.

    Here is a 1:5 scale model of the bot ("Never call me a chicken" :-))
    I'll bring it to Tinkerers meetup on Sunday.
    http://heysmile.smugmug.com/Hobbies/Big-Liz-Maker-Faire-GrEATER/28683993_rtfRHn#!i=[masked]&k=4zdG3WG&lb=1&s=A

    March 30, 2013

  • Evita W.

    Looking forward to it!

    1 · March 30, 2013

    • bequi

      Welcome aboard, Eva! Do you want to jump in and help build it or just watch as it develops?

      March 30, 2013

  • bequi

    I added a photo of a sketch of the proposed Greater-bot design. I already have a good idea of how I'll make the head, still working on ideas for the body.

    March 30, 2013

  • Sergei G.

    We may ask Garage Tinkerers for help with cutting parts tomorrow
    http://www.meetup.com/OC-Garage-Tinkerers/events/109836722
    Doug, are you planning to come there?

    2 · March 30, 2013

  • Sergei G.

    camera, pan-tilt servos, soap bubble gun, sound, LEDs... any other ideas?

    March 29, 2013

  • Sergei G.

    Begui - could you come up with a rough paper model to get imagination going? what you make of paper we can make of plywood, scaled up to 5-6ft ...

    1 · March 29, 2013

  • Doug B

    I think we can attach a motor or servo to any stable stationary base. I am assuming that the camera will be fixed in the head behind the eyes, but it could also be fixed and attached to the body. Sergei what did you have in mind?

    1 · March 29, 2013

  • Sergei G.

    has to be really heavy solid tripod, as the rotating head will be on top, and people might be tripping over the legs... How do you plan to acquire one?

    March 28, 2013

    • bequi

      Will the camera be in the head? I'm assuming it will since it'll rotate to follow colors. In that case, will a tripod work?

      March 29, 2013

  • Doug B

    I have a basic aluminum tripod I was thinking of hanging small weights near the bottom of each leg for stability. Just throwing out some ideas.

    March 29, 2013

  • Doug B

    Bequi, I was wondering if you had any thought on the outer costume design? I was thinking about about the possibility of using a camera tripod for the base it would be portable and also hide the computer.

    March 28, 2013

    • bequi

      Hi Doug, yeah, I have an idea and I can build it around a camera tripod base if that's what you're thinking. I can make it from fabric that goes over the tripod or cardboard or light plywood that goes in front of the tripod.

      March 28, 2013

  • Doug B

    I found this video about Emgu, C# and image tracking.
    http://www.youtube.com/watch?v=vdjoutNR2DQ

    March 22, 2013

  • Sergei G.

    http://www.emgu.com/wiki/index.php/Main_Page

    Emgu CV is a cross platform .Net wrapper to the OpenCV image processing library. Allowing OpenCV functions to be called from .NET compatible languages such as C#

    I suggest using it for all image processing needs.

    March 21, 2013

  • Sergei G.

    March 20, 2013

  • Sergei G.

    We had a productive meeting tonight, discussing the project. Here is a digest:
    -- the robot will be stationary, about 5' tall, body - a cutout of plywood
    -- rotating head (by servo) equipped with cheap camera
    -- camera feeds C#/Emgu/OpenCV2 image processing running on a Windows PC
    -- the head follows detected color blobs
    -- servo(s) connected via Pololu Maestro or Arduino
    -- a powerful audio amplifier transmits greetings
    -- optional bubble making machine or mist sprayer for hot days
    -- optional hand to point the above towards the people

    We have two groups working on the project:
    1. Creative and mechanics
    2. Programming and electronics

    We will need a PC for final delivery, and an amplified speaker (20W+)
    The rest we can buy cheap and make.
    Everybody is welcome, please contribute ideas, parts and labor.

    Let's make it happen!

    2 · March 20, 2013

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