What to make (bunch of steppers)? - Page 2 - Electronic Circuits Projects Diagrams Free

Sceadwian · 3rd July 2008, 03:50 PM

It really would be a shame to ruin such a nice looking arm. Reminds me of the one they used in the movie Inner Space. Get it working in a basic X/Y fasion and you could have tons of fun with it.

**Nigel Goodwin** · 3rd July 2008, 05:04 PM

Quote:

Originally Posted by Marks256

That is true. I suppose i could get it working... it will give me something to do, at least.

You could always sell it on Ebay, and let someone else do it

dknguyen · 3rd July 2008, 05:11 PM

Quote:

Originally Posted by Marks256

Hey! I like picbits' idea!

I will let you know when i am done with it, 3v0.

EDIT: dkngyen, the pendant is dead.

I think the rom went bad or something, because when it is turned on, it shows a bunch of up arrows and fish ascii!

What if you stuck encoders on the arm joints and just let tthe steppers "coast" during learning mode, so you could use the arm itself as it's own pendant?

Marks256 · 3rd July 2008, 05:49 PM

Hmm...

I will mess with it when i get my workbench cleaned off from the last project.

dknguyen · 3rd July 2008, 06:55 PM

Quote:

Originally Posted by Marks256

Hmm...

I will mess with it when i get my workbench cleaned off from the last project.

Have you seen the first Resident Evil Movie? At the very beginning when the guy working with the biohazard vials is moving the robotic arms, and the "controls" is a duplicate of the arm on the other side of the window? I thought that was super cool- so you couldn't move the arm in a way that it couldn't be moved in...errr and it's obvious too how to move the arm in a certain way.

Marks256 · 4th July 2008, 03:20 PM

No. i have never seen the resident evil movie, but it looks like i have it on my hard drive somewhere... i will watch if i get bored.

I found a cool hack on the net a while back (hackaday?) that featured some guy using pots strapped to his arm to control a robot arm with the exact movement of HIS arm. It was really neat.

Sceadwian · 5th July 2008, 06:21 AM

Marks, it's called a 'Waldo' You just need to make a frame for your arm with a stable base and pots at the joints, key is the joints have to match the arm or you have to translate them to match the same points in the robot arm at least, can get kind of complex. but that's what the human brain is good for. It could easily be made out of wood or PVC. How much you want for the arm? =) I'd buy it for a sane price. Looks like a solid arm, the only thing it really 'needs' is a rotating base.

**Krumlink** · 5th July 2008, 06:30 AM

What I would do to make a mimicking arm, is to have a potentiometer connected to each moving joint, and send them into the A/D converters supported in most Microcontrollers (the 18F452 has 8 A/D channels). You then can take a value and manipulate it into a stepper controller, etc.

Marks256 · 5th July 2008, 03:42 PM

Quote:

Originally Posted by Sceadwian

How much you want for the arm? =) I'd buy it for a sane price.

I'll take offers... Maybe i will put it on ebay.

EDIT: i can post a few pictures of the one i have, along with the equipment/accessories for it.

Quote:

Originally Posted by Sceadwian

Looks like a solid arm, the only thing it really 'needs' is a rotating base

Rotating base? The arm can rotate ~350 degrees. It can't do a full 360; almost, though.

**3v0** · 5th July 2008, 08:24 PM

Now see what you have done !

Quote:

Originally Posted by Marks256

I'll take offers... Maybe i will put it on ebay.

EDIT: i can post a few pictures of the one i have, along with the equipment/accessories for it.

Rotating base? The arm can rotate ~350 degrees. It can't do a full 360; almost, though.

Sceadwian · 5th July 2008, 09:02 PM

Nice, I didn't notice the base joint until you mentioned it.

Marks256 · 6th July 2008, 04:24 PM

I don't know that i will do with it yet, 3v0. Just assume you still have first dibs on it. If i put it on ebay, i will let you know. Maybe you will get it for less, then.

Pommie · 6th July 2008, 06:09 PM

Your going to get around 3 dollars on ebay. Much better to give it to an educational establishment and bathe in the karma that comes with the gift.

just think how good that will feel. And the reputation you will get will put you in the realm of deca greens. You could even over take Eric!!

I'll start.

Mike.

Marks256 · 6th July 2008, 06:28 PM

I am going to wait until september to see if my shop teacher want it. if not 3v0 has first bids.

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3rd July 2008, 03:50 PM	(permalink)
Sceadwian	It really would be a shame to ruin such a nice looking arm. Reminds me of the one they used in the movie Inner Space. Get it working in a basic X/Y fasion and you could have tons of fun with it. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

3rd July 2008, 05:49 PM	(permalink)
Marks256	Hmm... I will mess with it when i get my workbench cleaned off from the last project. __________________ There is no "I" in "team", unless Apple makes it... Then it would be iTeam.

4th July 2008, 03:20 PM	(permalink)
Marks256	No. i have never seen the resident evil movie, but it looks like i have it on my hard drive somewhere... i will watch if i get bored. I found a cool hack on the net a while back (hackaday?) that featured some guy using pots strapped to his arm to control a robot arm with the exact movement of HIS arm. It was really neat. __________________ There is no "I" in "team", unless Apple makes it... Then it would be iTeam.

5th July 2008, 06:21 AM	(permalink)
Sceadwian	Marks, it's called a 'Waldo' You just need to make a frame for your arm with a stable base and pots at the joints, key is the joints have to match the arm or you have to translate them to match the same points in the robot arm at least, can get kind of complex. but that's what the human brain is good for. It could easily be made out of wood or PVC. How much you want for the arm? =) I'd buy it for a sane price. Looks like a solid arm, the only thing it really 'needs' is a rotating base. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har." Last edited by Sceadwian; 5th July 2008 at 06:23 AM.

5th July 2008, 06:30 AM	(permalink)
Krumlink	What I would do to make a mimicking arm, is to have a potentiometer connected to each moving joint, and send them into the A/D converters supported in most Microcontrollers (the 18F452 has 8 A/D channels). You then can take a value and manipulate it into a stepper controller, etc. __________________ MechTronics World of Warcraft is a disease

5th July 2008, 09:02 PM	(permalink)
Sceadwian	Nice, I didn't notice the base joint until you mentioned it. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

6th July 2008, 04:24 PM	(permalink)
Marks256	I don't know that i will do with it yet, 3v0. Just assume you still have first dibs on it. If i put it on ebay, i will let you know. Maybe you will get it for less, then. __________________ There is no "I" in "team", unless Apple makes it... Then it would be iTeam.

6th July 2008, 06:09 PM	(permalink)
Pommie	Your going to get around 3 dollars on ebay. Much better to give it to an educational establishment and bathe in the karma that comes with the gift. just think how good that will feel. And the reputation you will get will put you in the realm of deca greens. You could even over take Eric!! I'll start. Mike.

6th July 2008, 06:28 PM	(permalink)
Marks256	I am going to wait until september to see if my shop teacher want it. if not 3v0 has first bids. __________________ There is no "I" in "team", unless Apple makes it... Then it would be iTeam.