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This is R.O.R.S.H.A.H Robot Of Remote Speech Human-connection And Handshake EXPLANING THE IDEA Well. this is not just another MOC which sole purpose is to collect dust on a shelf. No. This one has a real purpose and it is been in use in my family for quite a while now. As you all very well know, there are all this pandemic thing around the globe. And because of it a lot of people lockdown-ed in different countries and not able to travel to meet their relatives and friends even on holidays. So, to solve this problem at least a bit, a have created this little one. It is not actually a robot, but wheeled platform with attach point for tablet. Idea itself is not anything new, as example, you may know BUDDY the Emotional Robot by French company Blue Frog Robotics, model of which I once have made. Point is that actual robots are complicated (include more than just that function), not close as cheap as even big lego technic sets, rarely customizable and not available on market or can be purchased by only very big hospitals with political connection or smth like that. Lego on the other hand is affordable (mostly) and easy to use. So, why not to use it instead! WHAT YOU WILL NEED To build yourself such a Robot you will need: -At least two motors for each wheel -Optional third motor for tilting tablet -Optional fourth motor for extra function -SmartHub -Two wheels (use may use whichever you want, but narrow ones are better choice) -A bunch of technic parts to build the chassis -Smartphone to control the robot -Tablet or second smartphone for videocall HOW TO USE IT The idea is simple, imagine, that you have a family member or friend who has stucked in other city or country. But you want him to be present on family gathering, usually you would connect with him via videocall, which is good,but boring - as he will be present only as picture on the screen. Why not to place tablet with opened videocall on a wheeled platform and give the person on the screen an ability to control this platform. Such he will have some kind of a free will of movement around your table or floor. This is a purpose of such robots - and of this one too. After you've built your own RORSHAH - you should set an interface to control it in app that you prefer to use - my app of choice is ControlZ Then you should share the screen of your phone with the person you want to use the robot. (I recommend using Parsec - as it is free) - make sure to share the screen in app that allows to control scren via sharing. After this you make a videocall and place tablet with active call on your robot - and voi là - your friend can see you,talk to you,drive around your room,look around and even shake your hand! Here is the video,demonstrating RORSHAH in use: Thanks for watching! P.S. What do you think? As for me - this is really useful invention which really enhances connection between people divided by borders. -
Only two axles through a Lego turntable (the 48452cx1) has always irritated the more experienced Technic builders, stimulating them to work out many different solutions. Actually, some really clever solutions have been found, but most of them cause too much friction or require too much space. I have succesfully tried to do an attempt too, thanks to 3D printing and a good friend, he designed the CAD model of my solution. I can say that my solution has low friction and consumes much less space in comparison to the existing solutions. More of the story and some more pictures can be found at http://mocpages.com/moc.php/419288 I have made an elaborate video about the problem and the process, but I think it will be 6 well-spent minutes. At the end of the video, there is another big surprise... Something that never was possible, is possible with the new parts! http://youtu.be/1OsSGkDsgXs To get a better idea of the part, you can find some photos here: All photo's can be found on: http://mocpages.com/moc.php/419288 in a higher resolution. The CAD drawing assembly: This design is extenable to bigger versions, I think that up to 5 or 6 axles would fit through the turntable. The only problem is connecting all gears in a robust way: to 'get to the gears', the outer gears have to get a bigger diameter and the problem of space-consumivity is back. I found that the three axle design really was a good optimization between robustness, way of accessing the gears and maximum transported torque through them. It is my hope that the Lego group takes over this idea and starts producing it, because especially the three-axle option ore the two-axles through the small turntable could be very useful in an upcoming Lego flagship. So, if you happen know someone at the Lego Technic department, please give him/her a good impression of the idea!