oracid

You can try starting from this : http://www.eurobricks.com/forum/index.php?showtopic=114392&hl Good luck !

For me, Legos are a means, not an end. Therefore, I have no any forbidden.

Yes, I noticed the mouse, but at any time, I wondered what you said. But as I said, "If one day I was using this software, your video would certainly be very precious." Thank you again.

A great thanks to you. For occasional use, I find that Blender is very complicated. This is software that requires a large time investment. I watched the video in accelerate. My understanding of English is not very good, too bad you did not put subtitles. If one day I was using this software, your video would certainly be very precious.

Big success! Congratulations ! I use the motor block by indicating the time in seconds, nothing more. I use the LEGO MINDSTORMS Education EV3.

Can you tell us how you do that ?! fantastic ! Of course ! You have to do !

I know your worm, it is so great ! But its orientation is not very common. Maybe a new projet ?

Thank you for all this ! Here the U-joint, https://en.wikipedia.org/wiki/Universal_joint#Equation_of_motion Here the CV joint, https://en.wikipedia.org/wiki/Constant-velocity_joint#Double_Cardan

I presume that the child should be about 20 or 25 kg. How have you estimated the number of necessary servos. I see that there are 14, it's a lot! In my work, here http://www.eurobricks.com/forum/index.php?showtopic=110051&hl=oracid#entry2230918 ,I demonstrate that with a single motor XL, I can move 8 kg. In fact, I tested with large bottles and it is 12 kg. By the following realization, http://www.eurobricks.com/forum/index.php?showtopic=117220&hl=oracid#entry2384354 , I realize that the servos lost their position when the torque is too high,which slows them a lot, for this reason I used the XL motor. Nevertheless, I like your achievement, myself, I'm trying to make a 1m tank, but for now, I do not know where I'm going. Therefore, what you are doing really interests me.

I bow down face so much poetry.

I put this in a corner of my brain. Thank you so much.

I am very interested, this sounds very important. But can you explain to me what is a U-joint? I guess I understand, but it is not clear to me why the red one is much better.

Very interesting, thank you.

Is this the french touch ? Splendid !

Very impressive ! One of the best Walker !

Maybe some pictures would do the trick?

I like that very much ! Congratulations.

Yes, I guess with Arduino we can do many things, provided you add a lot of material. At home I have 2 PC with a Surface Pro 2. This PC weighs 920g. Sure, it's heavier than EV3 which weighs 285g, or an Arduino. But can one compare? I have no expertise in robotics, but suppose that I want to build a humanoid with large capacity, I will need a large computing capacity. But back on earth, I would say that my achievements in LEGO drive with a PC and with the EV3 software development, but without going through the brick EV3 and even without an actual physical realization LEGO . In short, he is a software emulator of EV3 with fictitious motors, sensors fictitious, a fictional environment etc ... My idea would be to develop everything on a PC in total virtual and then transposed into real life with or without EV3. Is it reasonably possible? I hope I made it clear, my English is not very good.

I did a little research and found two very small PC, 60 g, with the shape of a USB stick. I think this route should not be overlooked. Here are two links in french, sorry: http://www.lesnumeriques.com/ordinateur/intel-compute-stick-p26581/medpi-2015-intel-compute-stick-pc-format-cle-usb-n42449.html http://www.lesnumeriques.com/ordinateur/archos-pc-stick-p27217/archos-presente-son-mini-pc-hdmi-stick-n43499.html

I believe there is very little PC.

"EV3 + Raspberry IP + Arduino" I will not make me but friends ...... But why not a PC ?

Thank you so much !

The lateral slippage is ok in a home interior and on a hard surface. There, where it could be problem is on a soft surface such as a lawn. ?

My goal was to create an inside robotic base, large enough and powerful, and affordable prices, to meet the majority of needs. Thanks to its speed and power, this robot could pick a fairly heavy load. But more typically, it may be used as video surveillance tool for a large area. For the mechanics, I strongly inspired by my DELTA rover, http://www.eurobricks.com/forum/index.php?showtopic=115732&hl=delta , strongly reinforcing its structure. At first I thought to use the Big EV3 servomotor. In absolute terms, these servos have a great power, but in practice, once you ask them a high torque, they lose their positioning, which slowed sharply. So I opted for 2 XL motors by changing the connections of cables EV3, inspiring me to this video To illustrate the effectiveness of these technical choices in the video that I offer, I chose to encode a dance, a waltz. In this video, I think it feels good power and speed of the robot. If you pay attention to the dance, you will find that the precision motors XL is quite satisfactory. I think that there is no obligation to use actuators for moving a robot. I think it is entirely legitimate to use existing sensors (GPS, gyro, etc.), for positioning. For programming XL motors, you must use the blue block Unregulated Motor Block. The blocks commonly used for the actuators are not suitable since they do not allow to modulate the power. Please find below my simple program, as an example.

Oh, yes, I know this video, but I find it a little, naive solution.