Hi I am sure most of you have seen OPEN CAT on the internet as it has been a few years since it was designed, the designer was not sure how he was going to market Open Cat, was he going to make the .stl files available for 3d printing or was he going to have the parts made by injection molding and sell Open Cat as a finished robot or as a kit. we can see this very thing with our member Will fxrtst, with his Alan android head. but open cat is now available as Nibble and he used laser cut plywood and it is in a kit form. check it out if you have interest. I have been watching with great interest other members of Synthiam, working on quadruped robots, which interested me. but the instability problem seemed to be the biggest issue to overcome. DJ. has the Idea to use a MPU chip. to me that is the way to go, and Open Cat uses the MPU-6050. with success, Open cat walks. So to test out how to design a quadruped robot. I found that the stl files for a open cat design using a mpu chip is available on Thingiverse.com search for opencat no spaces between open and cat. and you will find a stl files to make a Open cat designed by manic-3d-print which mimics the nibble open cat design and uses the arduino programming from open cat nibble. I have finished printing this and installed the mini servos and am still waiting for the HuaDuino controller board and DJ helped me with this and how to link EZ-Builder. it is still a work in progress. see the pictures I supplied
Other robots from Synthiam community

Daman's Metal Boxbot... Yes I'm That Impatient

DJ's The Real Wall-E

Keep it up and hopefully we can have a fallover blooper reel compilation contest.
Great work.
I think you can use the EZ controller if you have one to at least play around. I was really pleased the first time I had Robopup dragging itself across the floor. I followed opencat on hackaday.io. It is still up there. You have probably seen it.
Here is a Youtu be Video Showing this 3d printed OpenCat's cat like movements and it's stability just click on the words open cat.
Then you end up with a firmware that uses their mpu data and merely accepts movement commands from ARC
the nallycat is great ,like it very much.i made an app whit 7 mp3 files off cats.maybe you can use it.
cat soundboard
Thanks For your cat Soundboard The mp3 files should be very usefull
Bruce