Let's Make Robots!

Observer v2.0

Robot that can be controlled via bluetooth

So I build my first wheeled robot. For now it has no special functions or sensors, but I'm planning to add those features later. Robot can be controlled with PC, Laptop or mobile phone, but I have ordered second bluetooth module. With this module I want to build a controller. So I hope you like it, and feel free to ask about something that might interest you.

UPDATE 1.1 I've added lights and change controller from phone to arduino with accelerometer. For now it runs via laptop, but I've ordered Bluetooth module from e-bay, because I want to make standalone controller.

UPDATE 1.3 I've build the controller, it uses Atmega8. Now robot can be controlled via analog stick or accelerometer.


UPDATE 1.4 Third wheel has been added to the back side of the robot, this is the last update of version 1.X next update will be version 2.0.


UPDATE 2.0 I've switched to xbees and robot is now controlled by control glove

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nice one! What are you using to power the Atmega 328? Or are you still powering both the servo and the 328 with the 4 x AAA batteries? Also, are those wheels lego parts?

Thanks :). Yes I'm still powering everything with 4x AAA batteries, but in the version 2.0 I'm going to use separate power sources for servo's and bluetooth with atmega. And I found those big wheels in old box with lego technic, but they don't look like original lego parts so I don't know where they came from.

How did you attach the wheels on the servo? Did you just glue them on or screw them some how? I just bought a few wheels for my lego NXT and I am hoping to use them with the some arduino projects too.

great bot!! and nice 3 controllers.

Thanks man :)

Is there a way to stop the body from tilting upwards while it's moving forward? Other than that, this is one pretty kewl differential drive robot. :)

I will try to balance it with some weights, thanks :)

Second design I've seen today with huge wheels. Very nice looking robot, and very FAST. Good Jo.

Thanks :)