Hello from a Boston transplant

[Sparr Risher]

Hello everyone. It was nice to meet a couple of you last night. I was the guy in the corner messing with a Printrbot.

Right now I've got a ShapeOko that usually acts as a frosting 3d printer and the aforementioned Printrbot Simple. The ShapeOko is destined for some upgrades or to become a pile of upgrades and spare parts for the PS1 ShapeOko. The Printrbot is probably getting donated to SSHC, if they'll have it.. What I'd like to work on in the near future is 2d and 3d platforms that draw and paint, like the two-coincident-axes plotter sitting on the counter in the electronics lab at PS1 right now. Does anyone know who made that, or what its story is?

Also, I brought with me a large quantity of NEMA23 stepper motors, a few types. I'm donating a few to the PS1 electronics lab, and Anna should have sorted them out soon, but I have more that I'm hoping to trade for other hardware/tools. If you've got some makerslide or 8020 or anything else nifty sitting around and need some motors, we should talk!

[Everett C. Wilson]

The one-axis draw bot is a Bart creation and event that we assembled and had moving in a night, as a way for us to figure out inverse kinematics with LinuxCNC.

Unfortunately we never got it working smoothly; it kept flipping out at the extremes of the y-axis.

Bart, do you still have the kinematics C file? I actually tried looking for it recently, and it isn't in my github repos.

Everett C. Wilson

Hello everyone. It was nice to meet a couple of you last night. I was the guy in the corner messing with a Printrbot.

Right now I've got a ShapeOko that usually acts as a frosting 3d printer and the aforementioned Printrbot Simple. The ShapeOko is destined for some upgrades or to become a pile of upgrades and spare parts for the PS1 ShapeOko. The Printrbot is probably getting donated to SSHC, if they'll have it.. What I'd like to work on in the near future is 2d and 3d platforms that draw and paint, like the two-coincident-axes plotter sitting on the counter in the electronics lab at PS1 right now. Does anyone know who made that, or what its story is?

Also, I brought with me a large quantity of NEMA23 stepper motors, a few types. I'm donating a few to the PS1 electronics lab, and Anna should have sorted them out soon, but I have more that I'm hoping to trade for other hardware/tools. If you've got some makerslide or 8020 or anything else nifty sitting around and need some motors, we should talk!

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[Bart Dring]

@Everett  I have the formulae (easy stuff), but not the C file.  We should try running it on Beagle Bone Linux (I can donate hardware)

 

@Sparr.  I don't like 8020 (typically inch based and overpriced).  I have hundreds of piece of Misumi material in many shapes and lengths.  I also have brackets and hardware.  I would love to donate it to a fun group project.

 

Has anyone ever done a self balancing project.  I think it would be fun to make an inverted pendulum camera slider.  Maybe we could tap into some cheap drone hardware for the balancing? 

 

http://www.hobbyking.com/hobbyking/store/__54299__Hobbyking_KK2_1_5_Multi_rotor_LCD_Flight_Control_Board_With_6050MPU_And_Atmel_644PA.html

 

On Friday, September 5, 2014 9:21:38 AM UTC-5, Everett C. Wilson wrote:

The one-axis draw bot is a Bart creation and event that we assembled and had moving in a night, as a way for us to figure out inverse kinematics with LinuxCNC.

Unfortunately we never got it working smoothly; it kept flipping out at the extremes of the y-axis.

Bart, do you still have the kinematics C file? I actually tried looking for it recently, and it isn't in my github repos.

Everett C. Wilson

Hello everyone. It was nice to meet a couple of you last night. I was the guy in the corner messing with a Printrbot.

Right now I've got a ShapeOko that usually acts as a frosting 3d printer and the aforementioned Printrbot Simple. The ShapeOko is destined for some upgrades or to become a pile of upgrades and spare parts for the PS1 ShapeOko. The Printrbot is probably getting donated to SSHC, if they'll have it.. What I'd like to work on in the near future is 2d and 3d platforms that draw and paint, like the two-coincident-axes plotter sitting on the counter in the electronics lab at PS1 right now. Does anyone know who made that, or what its story is?

Also, I brought with me a large quantity of NEMA23 stepper motors, a few types. I'm donating a few to the PS1 electronics lab, and Anna should have sorted them out soon, but I have more that I'm hoping to trade for other hardware/tools. If you've got some makerslide or 8020 or anything else nifty sitting around and need some motors, we should talk!

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[Justin T. Conroy]

I've done an inverted pendulum before. It's been a while, so I don't remember everything from it, but I still have notes from back then.

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[Ron Bean]

>@Sparr. I don't like 8020 (typically inch based and overpriced).

It's commonly available used, though. There's a scrap guy in Milwaukee
who saves it for us.

[He's only available by appointment-- Harrison Metals, 2172 S 1st St,
Milwaukee, WI 53207, (414) 486-6280, tell him you heard about him from
Milwaukee Makerspace. Or ask your local scrap metal dealer.]

[Sparr]

On Fri, Sep 5, 2014 at 10:02 AM, Bart Dring <barton...@gmail.com> wrote:
> @Everett I have the formulae (easy stuff), but not the C file. We should
> try running it on Beagle Bone Linux (I can donate hardware)

I've got some Teensy 3.0s sitting around. They have a 32MHz ARM, which
should be able to keep up with the kinematics formulae in realtime.

> @Sparr. I don't like 8020 (typically inch based and overpriced). I have
> hundreds of piece of Misumi material in many shapes and lengths. I also
> have brackets and hardware. I would love to donate it to a fun group
> project.

Couldn't you tell by the lowercase eight that I was using 8020 in the
generic sense? :) Seriously, though, Misumi stock is great. I'd even
have use for some makerbeam. I'm definitely interested in group
projects, but I'd also like to fly solo on a few things, hence the
goal of trading the components I have too many of for the components I
have too little of.

> Has anyone ever done a self balancing project. I think it would be fun to
> make an inverted pendulum camera slider. Maybe we could tap into some cheap
> drone hardware for the balancing?

You lost me at "camera slider". Elaborate?

[Ryan Pierce]

I am doing IMU stuff for Adler Far Horizons balloon launches. Lately I'm playing with the MPU-6000 chip.

Speaking of that, I am in dire need of finding someone with a better understanding of vector math who can help me with a magnetic compass calibration routine.

-------- Original message --------

From: Bart Dring

Date:09/05/2014 10:02 AM (GMT-06:00)

To: cnc-bui...@googlegroups.com

Subject: Re: [CNC Build Club] Hello from a Boston transplant

@Everett  I have the formulae (easy stuff), but not the C file.  We should try running it on Beagle Bone Linux (I can donate hardware)

 

@Sparr.  I don't like 8020 (typically inch based and overpriced).  I have hundreds of piece of Misumi material in many shapes and lengths.  I also have brackets and hardware.  I would love to donate it to a fun group project.

 

Has anyone ever done a self balancing project.  I think it would be fun to make an inverted pendulum camera slider.  Maybe we could tap into some cheap drone hardware for the balancing? 

 

http://www.hobbyking.com/hobbyking/store/__54299__Hobbyking_KK2_1_5_Multi_rotor_LCD_Flight_Control_Board_With_6050MPU_And_Atmel_644PA.html

 

On Friday, September 5, 2014 9:21:38 AM UTC-5, Everett C. Wilson wrote:

The one-axis draw bot is a Bart creation and event that we assembled and had moving in a night, as a way for us to figure out inverse kinematics with LinuxCNC.

Unfortunately we never got it working smoothly; it kept flipping out at the extremes of the y-axis.

Bart, do you still have the kinematics C file? I actually tried looking for it recently, and it isn't in my github repos.

Everett C. Wilson

Hello everyone. It was nice to meet a couple of you last night. I was the guy in the corner messing with a Printrbot.

Right now I've got a ShapeOko that usually acts as a frosting 3d printer and the aforementioned Printrbot Simple. The ShapeOko is destined for some upgrades or to become a pile of upgrades and spare parts for the PS1 ShapeOko. The Printrbot is probably getting donated to SSHC, if they'll have it.. What I'd like to work on in the near future is 2d and 3d platforms that draw and paint, like the two-coincident-axes plotter sitting on the counter in the electronics lab at PS1 right now. Does anyone know who made that, or what its story is?

Also, I brought with me a large quantity of NEMA23 stepper motors, a few types. I'm donating a few to the PS1 electronics lab, and Anna should have sorted them out soon, but I have more that I'm hoping to trade for other hardware/tools. If you've got some makerslide or 8020 or anything else nifty sitting around and need some motors, we should talk!

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[Bart Dring]

camera slider = camera on a motorized track