A New Mini-Contest for the Holidays!

[Evodyne]

All thanks to Member-X: I'm just doing my "job"!

[smeghead]

congrats mendez

[mendez]

Thanks ;-)

[Parameter]

Okay. I'm the one giving those motors because I tought someone who need them would build a nice project and the motors alone have very little value when sleeping in the stuff pile. Please don't swamp me on how nice it is, I know but I'm not doing it for any other purpose than to help a bit for all the help I got in the past. I appreciate your heart warming feelings, so let's look at it this way:

You should help too if you can afford (time, ressources, money), the world as a cooperative space is much better than in competition. With competition, one alway end up taking someone elses space and war happens. Help each other and we can create great things in peace and harmony... well, 2006 is a year of change, let's make it a change for the better.

Mendez, I really like that small router. I think you got a good deal at 275$. You will like those motors as they are a perfect fit. Seems like a dremel mount on it, the smaller motor will be fine there.

I will go to the post office tomorow and verify the shipping fees. Probably going to be 3 small parcels as there is a max weight of 1kg (we're lucky, each is around 800g) for international mail with canada post. I will ship on January 4th to leave me time for packing and everything else I need to do in the shop for the beginning of the new year.

Congrats Mendez!

Parameter

Smeghead: I can make you an awsome deal on similar motors. Mail me if you're interested.

[Evodyne]

Hey guys,

Parameter has come out of the closet! We "talked" via email and I can say he is dedicated to being a "good neighbor" and this giveaway was him practicing what he preaches.

My parting words in this thread are simply a repeat of his: "You should help too if you can afford (time, resources, money), the world as a cooperative space is much better than in competition. With competition, one alway end up taking someone elses space and war happens. Help each other and we can create great things in peace and harmony... well, 2006 is a year of change, let's make it a change for the better."

Sounds good to me!

Evodyne

[mendez]

Hey thanks a lot, Im still waiting for the cnc board I order from hobbycnc , and Im desperate to solder it, I think I will put a pc power supply on it first, in case I know how it works the cnc etc, I hope in acouple of weeks I have my cnc on my hands and I will be posting some parts I will do on carbon fiber. Thanks a lot really.

[Parameter]

They're shipped. We'll see how long it takes from canada to puerto rico with small parcell ground shipping...

I had to take the motor brackets from the big motors and put those with the smaller motor to get the weight below 1kg on each so they would fit small parcel standards.

I would like to thank Evodyne as he is the one handling the shipping fees and this is not a simple letter from new-york to boston. Thank you Evodyne for your help in this mini contest.

Para

[mendez]

Great !!!! Thanks.... I have another question, I will be using a CNC the hobby cnc board, I ask if is ok to use the pc power supply but they told me it has a weak voltage (12V) to use a transformer or wahtever, but I went to Radio Shack nad I saw a power supply or something similar that provides me 24volts and is for 23 dollars, anyone know ?

[Parameter]

I've been running those motors at 40v for now and get a decent 25-30IPM engraving speed and 40IPM rapids but my leadnuts are shot.

At 12v it will be really too slow with a simple drive and the hobby cnc board will just not work well at 12v and those motors, especially that those are not 3v but 5.2v thus the 12v is about 2x the 5.2v motors and with 3v motors it's 4x which permit faster speeds.

If they're wired unipolar, a 4A power supply should be plenty. Make sure it has the amps you need. Maybe at 3A you'd be okay but better safe than sorry.

Also, note that when you'll rectify it, it will go up to 1.4 times the AC voltage. That means 40V DC. The hobbycnc board can take up to 42vDC so it seems good to me.

Check the amps!!! You can take a few transfos at the voltage you like and parallel them on the DC side (after diodes and capacitors) for more amps. And of course, there is the micro-wave oven transfo conversion which can deliver heavy amps and allow you to tune the voltage for your needs.

Para

[mendez]

I got my board and I solder all the parts, I got a unipolar stepper forom my printer lol and well Im figurating out how to make it work because Im testing the board with a 12v baterry, any help please ? I dont know wich cable needs to be conected on the board - stepper motor

[lingdao]

i'm lingdao is china of motor ¥660.usa,money 85

7A110byg,big motor

www.gocx.cn

[James Newton]

Originally Posted by smeghead A quick update i have scrapped the idea of using my own design controllers and will be using the linistepper controllers,have just noticed the steppers in the contest can be wired in bipolar mode so i could also build the pic step boards and see which set of drivers work best, i have also added ballraces to the clarke mini lathe crosslide screw so it turns a whole lot smoother. just need some steppers now

I'm really curious to know if you ever did try the unipolar / linistepper combo against the bipolar / pic step and to hear any results of that comparison.