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Lynxmotion Quadrapod & Parallax Electronics (lost) — Parallax Forums

Lynxmotion Quadrapod & Parallax Electronics (lost)

PrettybirdPrettybird Posts: 269
edited 2009-06-28 18:29 in Robotics
· I got this item off Ebay last year and decided to take a break from my Boe Bot and fire this thing up. It was a self engineered unit made from components and never walked. I can see why the student put it on Ebay. I am using Crustcrawler software and the start up alighnment didn't work from day one. After about 10 hrs. of trial and error I finally figured how to set home positions and got it to walk backwards when instructed to go forwards. Better then quivering on the floor when I got it. I can live with that. I was able to set the legs 90 degrees from the floor and offset the front and back legs around 45 degrees from the body. It is a good solidly built machine but the mechnical specs. are miles off from the crustcrawler. Just one leg lists for $60 without servos. Using a BS2 board with a LED APP module and an older version Parallax multi servo driver. All electronics are good. I was wondering if anyone has attempted this before? I seen this model on Utube and it walked as gracefull a dancer. lol I know the software is way beyond a newbe like me and just seeking a better program or help with a decision to throw it back to Ebay. Even used was not cheap. Included is the software and a pic. Appreciate any help I can get but don't expect too much unless I get someone that did this before.
bs2
bs2
Quadrapod Crustcrawler.bs2
19K
IMG_2807.JPG
3072 x 2304 - 2M
IMG_2806.JPG
3072 x 2304 - 2M

Comments

  • DJSandbergDJSandberg Posts: 56
    edited 2009-06-28 18:29
    I think the first thing is to determine a strategy for walking.· Do this before trying to write the code.· It makes a difference if the robot will support itself on two legs or not.· If it can support itself, then I would think that:

    All legs at neutral

    WalkForward:

    LF and RR legs lift and swing forward fully.

    LF and RR legs drop and support the robot.

    RF and LR legs lift and swing forward fully.

    RF and LR legs drop and support the robot.

    Goto WalkForward

    So then you just have to figure out how to make one leg do what you want.· The rear leg on the same side will be the same, the legs on the right side will be the same but in reverse.

    Daryl
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