Made your own "Melissa hand" for your robot

Discussions regarding building a walking robot at home. Most of the robots participating at Robo-One competitions are custom fabricated.
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9 postsPage 1 of 1

Made your own "Melissa hand" for your robot

Post by roboticage » Wed Nov 18, 2009 8:18 pm

Post by roboticage
Wed Nov 18, 2009 8:18 pm

Hi, :D
I'm a robotic enthusiast like all the people in this forum.
Ever since I saw the "Melissa hand" type I tried to made
one every one could do it, without very special cutting tools
or hard to find parts.

I will post some pictures that will speak from themselves and I'll
respond to any questions you'll put here on the forum about them.
Other pictures I can take on request or you can look at my FLICKR
profile
.

I only want to add that the materials used are:
- Aluminum board 0.66mm thick (with ~1.5mm diameter holes)
- Watch type telescopes (6mm wide)
- Plastic cable ties (~2.5mm wide)

and some tools:

- Hand grinder (engraver) ; nothing special only something to cut and polish the aluminum which is softer
- A pair of pliers to bend the aluminum board (very easy to bed BECAUSE OF THE tiny HOLES and ALUMINUM material softness)

For the rest I let your curiosity to discover anything I maybe forgot to mention. Enjoy:

ALUMINUM BOARD
Image

WATCH STYLE TELESCOPES
Image

ONE PIECE DIFFERENT STAGES
Image

ONE FINGER PARTS (LONG)
Image

RIGHT HAND down(ALMOST READY)
Image

RIGHT HAND up(ALMOST READY)
Image
Hi, :D
I'm a robotic enthusiast like all the people in this forum.
Ever since I saw the "Melissa hand" type I tried to made
one every one could do it, without very special cutting tools
or hard to find parts.

I will post some pictures that will speak from themselves and I'll
respond to any questions you'll put here on the forum about them.
Other pictures I can take on request or you can look at my FLICKR
profile
.

I only want to add that the materials used are:
- Aluminum board 0.66mm thick (with ~1.5mm diameter holes)
- Watch type telescopes (6mm wide)
- Plastic cable ties (~2.5mm wide)

and some tools:

- Hand grinder (engraver) ; nothing special only something to cut and polish the aluminum which is softer
- A pair of pliers to bend the aluminum board (very easy to bed BECAUSE OF THE tiny HOLES and ALUMINUM material softness)

For the rest I let your curiosity to discover anything I maybe forgot to mention. Enjoy:

ALUMINUM BOARD
Image

WATCH STYLE TELESCOPES
Image

ONE PIECE DIFFERENT STAGES
Image

ONE FINGER PARTS (LONG)
Image

RIGHT HAND down(ALMOST READY)
Image

RIGHT HAND up(ALMOST READY)
Image
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Post by billyzelsnack » Wed Nov 18, 2009 10:40 pm

Post by billyzelsnack
Wed Nov 18, 2009 10:40 pm

Very cool. Where do you get these watch type telescope things. I've never seen them before.
Very cool. Where do you get these watch type telescope things. I've never seen them before.
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Post by veltrop » Thu Nov 19, 2009 3:13 am

Post by veltrop
Thu Nov 19, 2009 3:13 am

I like this style! Finally I think I can give the Melissa hands a try. I'd also like to know where you got the telescopes.
I like this style! Finally I think I can give the Melissa hands a try. I'd also like to know where you got the telescopes.
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Post by BrianG » Thu Nov 19, 2009 4:42 am

Post by BrianG
Thu Nov 19, 2009 4:42 am

cool!

those are the watch band thingies right? spring loaded
cool!

those are the watch band thingies right? spring loaded
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:) I'm glad you like it!

Post by roboticage » Thu Nov 19, 2009 6:44 pm

Post by roboticage
Thu Nov 19, 2009 6:44 pm

Yes BrianG those are spring loaded watch type telescopes (watch spring bar - it's the exact name) and billyzelsnack I bought them from an usual Watch Repair Shop, very cheap found on eBay.

I'll post some short movie clips with some very easy and handy techniques about how to cut , bend and polish those pieces and how to put them together. Keep it close! :wink:
Yes BrianG those are spring loaded watch type telescopes (watch spring bar - it's the exact name) and billyzelsnack I bought them from an usual Watch Repair Shop, very cheap found on eBay.

I'll post some short movie clips with some very easy and handy techniques about how to cut , bend and polish those pieces and how to put them together. Keep it close! :wink:
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Post by limor » Fri Nov 20, 2009 9:07 pm

Post by limor
Fri Nov 20, 2009 9:07 pm

the creativity of people on this forum never ceases to amaze me

how do you plan to actuate the hand ?
:lol:
the creativity of people on this forum never ceases to amaze me

how do you plan to actuate the hand ?
:lol:
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Post by billyzelsnack » Fri Nov 20, 2009 11:33 pm

Post by billyzelsnack
Fri Nov 20, 2009 11:33 pm

I needed to figure out the magic search keyword to find them.. "watch spring bar"
I needed to figure out the magic search keyword to find them.. "watch spring bar"
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Post by limor » Sat Nov 21, 2009 3:19 pm

Post by limor
Sat Nov 21, 2009 3:19 pm

http://shop.ebay.co.uk/?_nkw=watch+spring

The first one on the list shows 300 of these little things for 1$ + 3$shipping
http://shop.ebay.co.uk/?_nkw=watch+spring

The first one on the list shows 300 of these little things for 1$ + 3$shipping
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Post by roboticage » Mon Nov 23, 2009 1:05 am

Post by roboticage
Mon Nov 23, 2009 1:05 am

limor wrote:how do you plan to actuate the hand ?
:lol:


I intend to make something like the original, but with some HITEC servos (because I made it for my ROBONOVA).I'll post soon some more photos but first I'll finish the prototype hand and fit it on a servo to see how it works:

Image
limor wrote:how do you plan to actuate the hand ?
:lol:


I intend to make something like the original, but with some HITEC servos (because I made it for my ROBONOVA).I'll post soon some more photos but first I'll finish the prototype hand and fit it on a servo to see how it works:

Image
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