News

Sixi Calibration Tool

The Sixi Calibration Tool helps anyone using a Sixi robot make sure that the robot’s mental and physical states match.

They have to match or else.

If they do not match then the move you expect is not the move you will get. This could very quickly lead to an accident.

Ok, what do we do about it?

There has to be a way to synchronize the mental model and the physical model. The calibration tool is made to fit in one place and attach to the arm in only one way. This forces all the robot joints to move to known angles. Those angles are measured in the mental model in Robot Overlord and then copied to the physical model in the robot’s brain.

https://www.thingiverse.com/thing:4565863

Sixi robot joint angles at calibration

JointAngle (degrees)
0 (x)0.0
1 (y)-41.3
2 (z)74.5
3 (u)0.0
4 (v)-33.5
5 (w)0.0
News Robot Arm

An ISO compliant Sixi hand

A good designer and leader knows when to say “no”. In today’s example… I have tried several times with the help of Instagram friends and my own employees to build a gripper that we can use with the Sixi robot. I decided, finally, to say No. We’re in the robot arm business, not the gripper business. If that’s true then how will Sixi hold grippers made by other people?

“ISO 9409-1:2004 defines the main dimensions, designation and marking for a circular plate as mechanical interface. It is intended to ensure the exchangeability and to keep the orientation of hand-mounted end effectors.”

https://www.iso.org/standard/36578.html

Are you looking for a challenge? How about making a gripper that works with our STL model of the hand? Then it should work with all commercial robot arms that match the standard, too.

Here’s a link to the DIN EN ISO 9409-1-50-4-M6 STL file.

Opinion Robot Arm

What to NOT do with a Sixi robot arm

The Sixi robot arm can reach 80cm (31.5in) and carry 2kg (4.4lbs). That’s a lot of power and versatility! In the wrong hands it could be trouble. Here’s a list of things that you should NEVER do with a Sixi robot arm.

Some ideas we have tested under very strict safety guidelines to show you why they’re a bad idea.

Some ideas we read about… then we folded the paper and put it in a fire.

Laser someone in half

Look, I get it, secret agents are getting all up in your base. Please! Resist the urge. Your Sixi will get PTSD. Also, the Secret Agent union is really mean.

Play the Knife Game from Aliens

It’s all good clean fun until it isn’t, and then you can count only to 512. Segue: I want to point out the Bishop pulled an Andy Dufresne – before it was cool – and saved the remaining humans from that space hell. That should go on the DO list.

…or anything else that is dangerous to meat

While we are all in favor of villainy, the human imagination is nearly limitless. Please don’t stab, slice, burn, scar, tattoo, shave, tenderize, cook, melt, or do other unpleasant things with humans, pets, or other living things. If you’re not sure what this means, draw a picture of what you want to do and show it to your parents or a lawyer. Do they approve? Cool.

Safety third

Remember: all accidents can be traced back to at least three mistakes. A little paranoia is totally acceptable here, it’s okay to let it off leash here.

If you’re still not sure if your task is safe (or how to do it safely), ask in our forums.