K3lso Quadruped (Build thread)

raess · September 3, 2020, 9:45pm

Head just finished

raess · September 3, 2020, 9:46pm

@igor_X powerless on ground as requested

Regarding printer. Buy it. It is crazy fun and addictive

igor_X · September 4, 2020, 7:04am

Cool It looks like it is doing push-ups

cbenson · September 4, 2020, 11:37am

Total weight with battery?

raess · September 4, 2020, 11:55am

The total weight will be around 5.5kg

raess · September 4, 2020, 12:01pm

Just had to test how the head looks with the neopixels. Just a quick and dirty test

cbenson · September 4, 2020, 12:01pm

Was trying to work out the weight… around 2Kg for the servos alone, maybe 0.5Kg for the 3D sensors, etc. Makes sense. Looking forward to seeing it walk!

raess · September 4, 2020, 12:05pm

Yeah same here We will see if I have time for some motions test tonight. We are working on software also
a pitty the day only have 24h

cbenson · September 4, 2020, 12:09pm

In case you were not aware, one of the prototypes for Spot was in fact white:

raess · September 4, 2020, 12:41pm

Nah I did not know that

raess · September 7, 2020, 1:11pm

Hey! Milestone achieved: K3lso first motions! Don’t pay to much attention to the sounds. Leg plastic covers is just hanging there and no silicone foots

raess · September 8, 2020, 9:15am

igor_X · September 8, 2020, 10:11am

Great, once again

Are you finished with mechanical parts, so it is only programming part now of the project?

raess · September 9, 2020, 9:58am

@igor_X Yeah more or less. I have the back left. And some minor things.

I am also in parallel sketching on the bldc version. I Think go with the AK10-9. Which have some sweet specs. But that will be later this year since they are quite pricey

raess · September 10, 2020, 8:51pm

K3lso V2 in progress. Tonight’s work. I wanted to take some distance from the spot look. And it came out like this. Quite happy! But still miles work left!

70cm long. 15-20kg weight. Rated joint torque 40NM, peak torque 100Nm. Max speed 240RPM. #K3lso #robotics #quadruped #ros #jetson #nvidia

igor_X · September 11, 2020, 7:12am

You will have like an army of these robots

Again, good choice of colors.

What exactly are the differences when compared to your previous robot?

raess · September 11, 2020, 7:20am

Thanks!
The big difffent is switching to bldc (no servos) and this actuators have 10 x the peak torque compared to mx-106 and 4 times faster

cbenson · September 11, 2020, 11:08am

Agreed. You have the talent, so why copy? Make your own.

raess · September 11, 2020, 11:15am

Yeah. A own design is more fun. Even tho I like the spot looks. but next build will be quite serious. That’s why I did my own design now.

Some more work. But still plenty to do. And change color to Nvidia green.

cbenson · September 11, 2020, 11:39am

Spot looks good. You can do better. The green is nice.