Hey guys,
I am a student of mechatronics and I’ve been working here at 3D Hubs for a while now and I felt that I’d love to combine my studies with 3D printing!
Naturally, my first instinct was to 3D Print a little robot and what could be a better one than a Marvin robot rolling around the 3D Hubs office!
So for now I only have some basic functions in mind for the Marvin robot
- Rolling around
- Avoiding obstacles
- Sound/light effects
Maybe the Marvin should be doing something else? Any ideas?
Next Steps
I am just going to use an Arduino Uno and some basic electronics , but the rest will be 3D printed : Shell, wheels and all mechanical parts.
I am really curious to see what kind of Material we will choose. Maybe Carbon Fiber for the wheels? Well it’s all still to be determined!
This is exactly the stage at which I’d love to get your input - Any ideas about the design or functions that I could add to it?
Also - any name suggestions would be highly appreciated !! It should have “Marvin” in it tho 
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Vtsst
2
Marvin-Tron! Blicking eyes would be cool to have, to combine with light effects maybe!
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As far as the name goes, Marvin sounds just about right, but it should definitely have an in-your-face interface 
Whatever you do, make sure to embed an NFC tag into one or more printed parts of RoboMarvin programmed with a link to download the classic Marvin .stl file or the github link to all source files of yours. This effectively makes your RoboMarvin a mothership for the smaller Marvins to manifest and invade this time space! Next, a GIANT roving RoboMarvin with a 3D printer inside…
3 Likes
MB3D
5
If Marvin will just drive forward and avoid crushing into an object in front of him you could place some distance measuring sensors in the back of the eyes to hide them. Maybe LEDs around the outer ring of the ear (the flat, not ball-like surface). I thought maybe 12-16 LEDs around there that fade on and off in a sequence would be awesome, maybe representing the speed, that Marvin is driving at (representing the wheels turns from the same side, so alternating sequences when Marvin makes a turn).
As materials i think, that carbon fibre for the wheels wouldn’t give you any bonus compared to normal plastics. The fibre composites are stronger and stiffer, but thats not what you need, what i would recommend is an inner wheel made out of normal plastics like ABS or PLA and the outside out of Ninjaflex or other sticky rubberlike filaments. Plastic has low friction so the wheels might slip on the ground (when driving on PVC and other smooth floors), this would be a problem when high-speed Marvin has to break rapidly to avoid a crash. With rubber tires you’d have a lot of friction to the floor so even the fastest turns, breaks and accelerations are possible to perform with “movin’ Marvin” (<- name recommendation) or “MechaMarvin”.
In general I am the worst at suggesting names and those two are the best I’ve came up with, while writing this.
Do you want to keep the normal Marvin geometry ? There are obviously some Marvin-mods out there that might have the right design to fit in some speakers / more LEDs or even some moving parts.
If you want to go really crazy you could design a panel just behind the first few mm of the eyes, that closes while the power is off. This should look like Marvin is sleeping and the panels get moved up / down with a motor when marvin gets powered on, as if he awakes.
-Marius
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