Let's Make Robots!

Spider Walker Robot

Aviod obstacles

I always wanted to build a Klann walker: http://en.wikipedia.org/wiki/Klann_Linkage

But never had the time to design and build the walker mechanism. Browsing the net, I have discovered a DIY spider walker kit, and bought two of them:

http://www.dfrobot.com/index.php?route=product/product&path=37_69&product_id=913

The KIT comes with one DC motor:

The problem with this, that it can not turn (unless you use a Tamiya twin motor set and hack the KIT). 

The easyiest solution is using two of the KITs.

Top view:

Bottom view:

You have to cut only a couple of mm-s off from one end of the X shaped bottom stiffener.

Normal ends:

Cut off ends:

The wires can be hid within the frame:

With the addition of the battery holder, the chassis is finished.

To be continued...

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Hey! I have one of those as well! I was planning to make a walker robot as well! I hope you can continue this!

I am not pushing but I would like to see a video :-) Interesting idea, keep posting please!!!

I have uploaded a short video, just to proove the concept. The spider walker works beautifully. Sorry about the video quality...

The robot is not fihished yet, because I could not make the sonar work with the 3.3V Launchpad panel. So maybe I will use an Arduino with the final version...

I run a hc-sr04 on my pi which is a 3.3v device. Vcc on sonar must be 5v still (my stellaris launchpad has a vbus out which should be 5v when powered from USB, pi also has one). Trigger ran fine from 3.3v output on pi. Gnd as per usual. Echo I ran through a voltage divider to 3.0 volts which the pi picks up fine. R1 was a 330ohm resistor, R2 was 330 followed by 2 330 ohm resistors in parallel.

oh, surprise... it indeed walks around beautifully :D

As for the sonar module, are you using level-shifting to connect to the launchap? also be sure to feed the sonar module itself with a stable 5V otherwise these cheap modules (HC-SR04) are known to provide unreliable results.

 

If you only want a single or two of those kits, check them out on ebay, only about 50 cents more, but with free shipping...

That's Lumi's company, so I wanted to support our homie.

Thanks Max, very appreciate that :-) I hope you can show us a bit about the use of them...

Very cool idea! I'm curious how it's going to work out...

Love it. More please:)