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This week I built a Mechamo Crab by Gakken. I have wanted to make one of these kits for a long time, and I finally got my chance. I made a time lapse-video of the entire build, it took about 3 hours to complete, but now it’s just a bit over 5 minutes. I hope you like it!

Music courtesy of BELL [Thanks!]

The End Result:

What you need for the Mechamo Build:

Mechamo Kit – Available in the Maker SHED
(6) AA Batteries

Tools you need:

None!

Gakken is known for their high-quality kits, and this is no exception. All you need is an hour or two of free time and nothing else. Everything is included in the kit. No, wait! You need 6 ‘AA’ batteries!

The included instructions are in Japanese. That could be a problem, but we have the English version available to download [PDF]. We translated the parts list too [PDF]. Problem solved!

When you are done building the Mechamo Crab, you might want to hack it a bit. I added a doll head, some circuit-bent audio form a toy horse, and 2 LEDs for eyes. Finally, I added a few bolts and washers to hold the head on. It was easy to make and the end results are a lot of fun.

A few detailed pictures of the hack

IMG_4749.JPG

Doll head filled with good stuff!

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Here is a detail of the washers and bolts I added to the top of the Crab. This holds the head on well, and it is easy to remove.

IMG_4756.JPG

The sound is from a toy horse that was headed for the trash. I found a place to add a wire and the sound changed from a horse to a robot monster. Simple circuit bending!

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Hope you liked the video!

Marc de Vinck

I’m currently working full time as the Dexter F. Baker Professor of Practice in Creativity in the Masters of Engineering in Technical Entrepreneurship Program at Lehigh University. I’m also an avid product designer, kit maker, author, father, tinkerer, and member of the MAKE Technical Advisory board.


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