Here is a little video on how my little Lego Test Robot is doing with its new Mecanum Wheels.https://www.youtube.com/watch?v=5UysoC_eEzo
Thanks for the amazing design.
You can also find me on:
Soon I also want to adjust the bot so it also has the Mecanum Wheels in the back and I will also adjust his Movement according to real Mecanum Wheel Movements.
I hope you are aware that you did choose my worst Mecanum Wheel design for your test robot. In my own test robot using these wheels, I had a very hard time controlling the sideways driving. Again mainly caused by the unpredictable slipping of the rollers in that design (I did use PLA rollers). But perhaps I am too pessimistic and it will work just fine in your robot.
The rollers in the other designs slip much more evenly, so sideways driving goes pretty well. I would recommend using http://www.thingiverse.com/thing:641377 or http://www.thingiverse.com/thing:681259 if you want high speed driving.
Are you using an Arduino controller?
Actually I chose the wheels because they had the biggest radius, my bot currently needs a bit of offset from the ground.
Lets see how it performs when I have the whole setup with 4 wheels ready.
With 2 wheels its already improved a lot because my bot now has a much tighter turning radius. Thats so cool with your designs, because its LEGO, I can reuse them with other projects :D
I also still want to order Ninja Flex maybe I can get better grip with it. So far I am pretty happy that I got the more rubbery material printed with my Ultimaker2. Lets see how Ninja Flex does :D
Yes I use an Arduino Uno currently.
The "641377" design has the same diameter of 82 mm, the "681259" design has a diameter of 120 mm.
With 4 wheels you will of course achieve the minimum turning radius ( see e.g. my youtube video). That will work just fine with your robot. It is just the sideways driving that might become more tricky.
Tomorrow I should receive my Ninjaflex order, so hopefully I am able to give an update soon.
Funny I didnt actually check the real size I just judged by eye, well that happens if you get unpatient ;)
Thanks for the hint. My Ninja Flex order is out now, hope they send it fastly.
Hi, I did print one Ninjaflex test roller for design "641377". The friction of the roller is excellent, I am pretty sure already that using Ninjaflex will fix the "slipping" issue.
Now printing the remaining rollers at a very slow speed. (20 mm/sec)
Amazing, that sounds good, my order should arrive soon as well. Hope Ninja Flex will still print on my Printer.
Hi, I just assembled my upgraded mecanum robotcar with the Ninjaflex rollers. It drives almost perfectly; no noticable slipping at all, but powerfull sideways driving. I will publish a youtube soon to demonstrate.
Hey nice thing, can't wait to test it with my bot. My Ninjaflex has finally arrived. This weekend is print weekend
Hi, did you succeed printing the rollers with NinjaFlex on the Ultimaker?
Yeah finished all of the wheels and also assembled the bot, footage is following tomorrow.
I thought about making a more detailed video on how I assembled the robot and how to program it, what do you think?
Sounds great to me, I will certainly watch it!
Sideways driving is also a nice thing to show if that works with your robot.
It might also be interesting for other Ultimaker users to show how you managed to print NinjaFlex (if that indeed was a challenge).
Damn didn't have time today maybe I can make it till the end of the week. Stay tuned ;)
Hmm it was not much of a challenge, But I can go through that process in the video. let's see when I find time.