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Stanford Pupper: low-cost quadruped robot

stanfordstudentrobotics.org

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Re: Stanford Pupper: low-cost quadruped robot

#31

Post by inetsee »

wslh wrote: post #17

What is the cheapest robot you can build? This robot is pretty expensive, is much more than a Lego Mindstorms EV3, Bandai Smartpet Robot Dog is USD 157 in Amazon. I am mainly thinking about a "one robot per child" initiative.

There seem to be two versions of the Bandai Smartpet Robot Dog on Amazon, one in black for $157 (that's out of stock at the moment) and one in white for $60. I don't know why there's such a high price difference, especially since there doesn't seem to be any functional difference between the two.

Re: Stanford Pupper: low-cost quadruped robot

#32

Post by A4ET8a8uTh0 »

phreeza wrote: post #4
A4ET8a8uTh0 wrote: post #3

This is the kind of the stuff that makes me wanna dust off my raspberry. I do have a vacation coming up. Maybe I should pencil in some fun time since it is a staycation anyway.

Is it really a vacation if you have to pencil in fun time?

I know it did not sound right, but between forced stay at home, in practical sense, we can't really go anywhere so we agreed on some home projects. It is not a true vacation, but it will be departure from regular routine.

Re: Stanford Pupper: low-cost quadruped robot

#34

Post by 542458 »

canada_dry wrote: post #33

> Req'd: routed carbon fibre About 50% of makers have a 3D printer... a CNC for carbon fibre routing... I'm guessing 1%. Very slick build for the price point though. 1/10th the price of something like: https://www.youtube.com/watch?v=dwdd2Bv94iw

Sure, but you don’t personally need the CNC. All you need is to know somebody who is in that 1%. Or have access to a makerspace with that CNC.

Re: Stanford Pupper: low-cost quadruped robot

#35

Post by NathanKau »

canada_dry wrote: post #33

> Req'd: routed carbon fibre About 50% of makers have a 3D printer... a CNC for carbon fibre routing... I'm guessing 1%. Very slick build for the price point though. 1/10th the price of something like: https://www.youtube.com/watch?v=dwdd2Bv94iw

You can buy the carbon fiber parts here! https://great3d.com/stanford-pupper-robot-carbon-fiber-parts...

Re: Stanford Pupper: low-cost quadruped robot

#36

Post by ipsum2 »

n0us wrote: post #8

> You can buy most of the parts directly from a reseller like Amazon or McMaster-Carr, but for some you’ll need to get them custom manufactured for you. The custom parts include the carbon fiber routed parts, the 3D printed parts, the power distribution printed circuit board, and the motors. Very cool and I would like to build this, but the "Nano Dog" is probably a cheaper and more approachable option for the garage…

I wasn't able to find any examples of this quadruped walking.

Re: Stanford Pupper: low-cost quadruped robot

#38

Post by NathanKau »

mrfusion wrote: post #19

Should I build this or spot micro? https://www.thingiverse.com/thing:3445283

The SpotMicroAI project has a great community on its Slack, but the project is a bit more in its infancy than Pupper. For instance, spot micro doesn't have the software right now to make it walk quickly or trot. Pupper is at a v1.0 stage with software and build instructions already complete, but it's potentially more expensive to build than spot micro.

Re: Stanford Pupper: low-cost quadruped robot

#39

Post by NathanKau »

softwarejosh wrote: post #6

should not be 600 those servos are pricey

You can buy the CLS6336HV servos from JX-Servo directly for about $25 each. Usually a much better deal than on Aliexpress, Banggood etc and it's pretty easy to do. The $600 price point though assumes you have a number of things already like a RPi, lipo charger, or PS4 controller.

Re: Stanford Pupper: low-cost quadruped robot

#40

Post by NathanKau »

billconan wrote: post #13
n0us wrote: post #8

> You can buy most of the parts directly from a reseller like Amazon or McMaster-Carr, but for some you’ll need to get them custom manufactured for you. The custom parts include the carbon fiber routed parts, the 3D printed parts, the power distribution printed circuit board, and the motors. Very cool and I would like to build this, but the "Nano Dog" is probably a cheaper and more approachable option for the garage…

For carbon fiber parts (used for the chassis and legs), I wonder if it is possible to carve them out out from the same power distribution PCB board. Some PCB manufacture seems to support custom shapes. But the PCB material must be heavier than carbon fiber, not sure if it will affect the robot dynamics.

Just for fun I uploaded the top and bottom body panel DXFs to jlcpcb and they're only about $2 each. That's compared to about $30 to have them cut out of carbon fiber, and of course you don't get to put circuity like your power distribution on it for free.
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