Building a Quadpod 3dof

Hi guys…I’m planning to build a quadpod robot…pls. can anyone give me advise what components do I need…the type servos, servo controller and I just wondering what type of Arduino should I choose…Im quite new with robotics…and I hope this forum will help me…newbie here :slight_smile:

Ok first I love quads. Having built 3 successful walking quads was quite a challenge, but your in the right place to get the help you need. Some very helpful people/friends here.

Ok first really you need to think about how you would like it to look.
This step is really up to you, but I can try and point you towards ideas.

Here is a Lynxmotion quad body. Many people decide to make their own so that’s something else to consider.
lynxmotion.com/p-435-quadrap … -mini.aspx

Also here is a selection of legs that you use or get ideas for your own.
lynxmotion.com/c-95-ses-leg-kits.aspx

Electronics…
This is really up to again but you could use these.
The brain…
lynxmotion.com/c-153-botboarduino.aspx

The controller…
lynxmotion.com/p-395-ssc-32- … oller.aspx

Personally I used the SSC with the botboard 2 and atom pro chip.
lynxmotion.com/c-66-bot-board-ii.aspx

Jim build a 3DoF / leg quadruped prototype which can be seen here:
lynxmotion.com/images/hi-res/aqp01.jpg

Hexapods have the advantage of being able to have three legs on the ground and three in the air - so the walking gait is / can be symmetric. Quadrupeds can either walk with two legs off the ground (dynamic) or only one leg off the ground (static). At this time we don’t have either code available for a 3DoF quad (BotBoarduino), though perhaps the community can offer some insight.

innerbreed - do you have code which would work on a BotBoarduino + SSC-32 for a robot like the one above?

My quad code was not for the botboarduino. It ran on the basic atom pro 28.
I converted xans infamous phoenix code by stripping it back and adding body shifting for balance.
Kurts your man for arduino conversions.

Do you have a video or two showing the quad’s motion?

Here’s one… Im on my phone so i can only copy and paste one url at a time.
Its a quad version of the t-hex. 4dof but same code applied .

youtube.com/watch?v=ZBnIbr1 … ata_player

Here is another with vertical legs like a dog.
Different gait applied here. Wish the video was better though.
youtube.com/watch?v=lbs80kqb … ata_player

Yep, I would like to merge in the Quad support to my Arduino Phoenix code base, but so far have not been overly motivated as I don’t have a test platform for it. If I had a body, I would probably break down one of my CHR robots and use 4 of the legs for a quad… Maybe sometime… Or maybe I will do this with the PhantomX

Right now I find I am spending more of my robotic time on a new robot by Orion Robotics (Dale and Nathan)…

More about this soon!
Kurt

Yeah, it wouldn’t be hard to “borrow” some legs and test code on a 'quad.
Let me know! If I’m not too busy, maybe I can help.

Alan KM6VV