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martinprice2004
10-01-2012, 07:21 AM
Hello, this is my first post.

I have been working on a Hexapod robot over the past few months and it took its first steps at the weekend. I will upload a video shortly. It is made up of rapid prototype parts on a home made a Reprap (Prusa) machine.

The robot uses a DAGU red back spider controller and is programmed using Arduino.

The project is open source and I will upload all the models, firmware and host software on my website.

http://www.heliumfrog.net63.net/hf08robot/hexapodcomplete01.jpg
More information at the http://www.HeliumFrog.com

I would like to improve the robot by using bowden cable driven legs, so if anyone can share any knowledge of such systems that would help.

tician
10-01-2012, 11:17 AM
I knew your name sounded familiar when I first read it - you are one of the more prolific reprap experimenters, are you not? It's been about three years or so since I first started collecting parts and I still have not finished my poor attempt at a reprap.

As for a bowden cable driven leg, I do not think it is too likely to work. There are plenty of robots that use cable drive systems for arms and legs, but not bowden cables (DLR hand is awesome (http://youtu.be/TqvW_6PmBIA?t=1m19s) - uses counteracting Dyneema threads controlled by variable stiffness motor units to actuate joints). It is just a bit too weak and imprecise due to flexing and compression of the exterior tube. Regarding joints that don't need as much strength or accuracy, Slugman built a very impressive hand that utilizes a bowden drive system (http://forums.trossenrobotics.com/showthread.php?4971-Biped-ankles-amp-The-hand-of-Zychor-WIP&p=50077#post50077).

martinprice2004
10-04-2012, 01:23 PM
I have just uploaded a few videos of the robot on YouTube.

http://www.youtube.com/playlist?list=PLzwvmLqj1U88bP4FNisyR9hO609KqvcfC

martinprice2004
10-05-2012, 08:42 PM
models, firmware and build guide uploaded. see link below.

http://www.heliumfrog.net63.net/hf08robot/hf08blog.html

Suicidal.Banana
10-16-2012, 04:10 AM
Well done! i like how you actually 'made' everything, down to the layers of plastic! certainly a great first post.
Now, time to think about heavily modding a rep-rap to be able to print circuits and servos? :wink: