FredWorks Open House

[Scott Arendt]

For anyone who might be interested - FredWorks, formally FredericksWerken will be hosting an open house at 385 Poplar road (aka Cody's farm) on Saturday Sept 13th from noon to six pm.  We plan to have some projects going on and burgers/drinks available for a small donation. 

We will also have some space if folks want to set up a table and sell their spare parts, tools, or junk.  We just ask that you bring your own table.

We have done a crap job of advertising the event, so we are not expecting a large turn out, but it should be a fun after noon anyway :)

Cheers,
Scott

[Russell Hubbard]

I was thinking of bringing a truck full of garage rejects (benches and unneeded stuff from fredhack) to see if y'all wanted any of it. Throwing it out if not.

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[Russell Hubbard]

Also: if anyone in your group wants a cheap 3d printer, I just upgraded and have my mosaic available for $350.

[Scott Arendt]

Russ,

The truck load of stuff sounds like a great idea, hopefully we can find some good stuff :)

I would post the 3D printer on the G+ group if you want to get more visibility, or you could bring it to the openhouse and throw it up on a table maybe?

Which printer did you upgrade to?  how is it working?

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[Russell Hubbard]

Garrett's solidoodle 3. He got a 4 and we setup an upgrade chain. Whoever buys mine will be the next link. Here's my first complete print. Working on the inmoov right now.

[Russell Hubbard]

I'm not terribly motivated to sell the mosaic, because I can see the use of having two printers that can print parts for each other. I just thought if you have someone wanting to get into it I'd throw it out there.

[Scott Arendt]

Sounds good, looks like a cool printer!  I just got a new control board for my printer yesterday, need to get is unwrapped and installed, but I hope it fixes the majority of problems I was having with it.

[Russell Hubbard]

I thought you were running ramps? What control issues are you having?

[Scott Arendt]

My old board was a Sandagiuno or something like that.  The problem was that one of the motors was only moving in one direction, while being commanded to move in both directions.  We traced it to the signal coming from the board not inverting, tried rewiring the drive line to a different pin out and changing the code, that seemed to fix it, but was a annoying work around, so we figured ordering a new chip would fix the problem but it didn't.  As we had been struggling with the firmware version as well, due to needing to use older firmware for my particular variant of the board, I decided it was worth the money to just get a new board.

[Russell Hubbard]

You upgraded to ramps with the new board, right? I have the sanguinololu on the solidoodle and ramps on the mosaic. The benefit of ramps is that you can drop in a new mega if you blow the board.

[Scott Arendt]

I ordered a whole ramps kit, with new mega, drivers and tiny little heat sinks, cause their cute more than useful :)  I also ordered a SD Card reader/Display, but it wont be in town for a month or more.

[Russell Hubbard]

Those little heat sinks are absolutely necessary. Even with the upgraded high current pololu drivers, my Y axis would overheat without them. Well, they're necessary if you want to break the 100mm/m speed limit. For slow printing, you can probably get away without them, but I have a patience problem. I'm running the solidoodle at 60mm right now because I haven't started optimizing it yet, but I've had the mosaic up to 135mm/m before.

[Russell Hubbard]

History lesson:
The sanguinololu board is a  hybridization of a sanguino with pololu stepper drivers. Sanguino is derived from arduino and sanguine. Sanguine because the board they were built on was red to contrast the original  arduino blue. A sanguino is basically a mega using a dip processor, allowing the hackers who developed it for the reprap project to batch program them. This also makes them ideal for build groups and the main reason for the proliferation of sanguinololu controllers today.

[Russell Hubbard]

If you're wondering what the difference is, the sanguinololu and ramps are electrically identical. The only difference is in the modularization. The sanguinololu is ideal for a group setting, where if you blow a processor you can have a friend burn you another one for the price of one chip. The ramps is more suited to an individual hacker, where if you blow a processor you can go to RadioShack and get another mega.

[Scott Arendt]

Cool!  Thanks for the info :)

[Garrett]

Thanks Russipedia!

Sent from my iPhone

[Russell Hubbard]

Re: advertising
Yeah, you could have put out a craigslist ad at least. most yard sale tracking apps source their data from craigslist and y'all aren't showing up on any of mine. Unfortunately, you're competing with the GEICO yard sale, which could have drawn customers up 17 to you. Not too late to post one.

On Sep 8, 2014 9:27 PM, "Scott Arendt" <sar...@gmail.com> wrote:

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[Scott Arendt]

Thanks for the idea, we are pretty dead so I don't know that it would be worth it to have people out.

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[Russell Hubbard]

Truck won't start anyway. I'm going to take tybalt out to the GEICO thing and stop by y'all on the way back. If y'all want some desks and shelving and stuff come by with a truck sometime and I'll fill it.

[Scott Arendt]

Ok

[Nonya Bidniss]

What do you mean, are you canceling?

On Sep 13, 2014 11:54 AM, "Scott Arendt" <sar...@gmail.com> wrote:

[Scott Arendt]

Me?  I'm here with Erin and Cody, but its wet and not likely to get many people is what I mean.

[Nonya Bidniss]

Ok I was confused. I'm coming shortly