Hi everyone!
This is my first post :) !
It is some time since I am working on my first prototype of a robot: the BB-8 from the last episode of Star Wars.
A robot that has a kinematics of movement quite particular and spectacular. Below, a video presentation of the robot during a ceremony:
https://www.youtube.com/watch?v=A_K10fX9DSY
My aim is to be able to remotely control the robot…
1. Here a view of my prototype:
2. This robot is embedded with:
- 2 6V DC motors
- 1 Arduino Uno
- 1 shield to remotely control motors
- 3 different supports (Arduino, breadboard, magnet)
- 1 magnet
- 1 9V battery
- 1 counterweight
- 2 wheels
3. Parts to print: (STL files for printing included in the post)
- 2 wheels
- 3 different supports (Arduino, breadboard, magnet)
- 2 of ½ sphere (200mm of diameter --> the biggest part)
- 2 parts for the head
- 1 counterweight
4. Specifications to respect:
- Less parts as possible (15 max)
- Low material consumption
- Easier to assembly
- User accessibility to change any part (motor, battery, shield …)
- No need of tools like screwdrivers…
The electronic part (remotely control of the motors) is ready. I need to test the system now…
I just saw that someone had the same idea and printed his own prototype. Any feedbacks regarding what it has be done already?
Anassalman CHEICK ISMAIL
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UPDATE 20/12/2016:
1. Wheels
Printed wheels are fitted perfectly to the motor device:
2. Chassis
I realized a new chassis because the older one was very difficult to print : it creates a lot of support --> waste of material and cleaning the part could be very delicate due to its small size and its thickness. So the chassis is splited into 2 parts (Thanks Franck LENNON for your feedback and support)
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UPDATE 22/12/2016:
1. Chassis Sup
Very nice finishing! Perfect for my Arduino device.
2. Chassis Inf
The part is very tight. The idea is well (fixation) but difficult to assembly as the part is very thin... I broken the Left side. I fixed it with some glue for the moment. Maybe I have to increase the thickness and add a gap to ease to mounting.
3. Assembly
Finally this part looks like this :
UPDATE 23/12/2016:
1. Support Breadboard & CounterWeight
Sadly the support Breadboard is broken during the printing. The reason is that the fingers of the part are very small and have a limit angle without support. So reviewed this part and also the CounterWeight part because it has the similar design.
2. Head Inf
Very complicated part too. It's globally well printed and my 2 euros coin (for magnetism) goes inside.
UPDATE 13/01/2017:
1. Assembly
The fixation system of the 2 half sphere body part was really bad and not robust. I have to look for another solution....
In the order hand, everything fits correctly, so I was able to move on
Here is the whole parts and tools used for this project :
VIDEO :
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TIPS:
1. To avoid steps and increase the accuracy of your printed parts, your STL file ought to be exported in consequence. I mean you have to increase the accuracy/Level of detail in your CAD designer (CATiA) before export.