MobBob is a bipedal, walking robot controlled by your smart phone. He's controlled by an Arduino-compatible Bluno Nano microcontroller, and interfaces with the phone using Bluetooth LE.

Here are some videos of MobBob in action:

There is still a lot to do on the app, but here is the demo app seen in the video:http://bit.ly/1HCKTAB

The app was written using the Unity game engine. I want to make the most of the capabilities and processing power of the mobile phone, and write apps that will let MobBob become a smart, autonomous, desktop companion. For example, I want to make use of the phone camera for computer vision, and also use the microphone for voice recognition. Still a lot to do, but I'm excited by the possibilities. :D

Besides the 3D printed parts, this project also uses:

- 4 metal gear micro servos from Arcbotics  
- DFRobot's Bluno Nano  
- Eneloop Mobile Booster Battery  
- Nexus 5 (or another smart phone - Android/iOS)  
- Micro breadboard, and various wires/cables  

To build MobBob, you need two of the LegPart, and then one of each of the others.

I used hot glue to mount the phone holder and battery rack onto the servo brace. Gluing these on allows the builder to adjust things for their particular phone and batter. I tweaked the positions to get the battery and phone positions to balance the robot out.

I used jumper wires to connect things, so almost no soldering is required.

Also, the Arduino code, and the example Android code is available from my article on LetsMakeRobots.com.

I wanted this project to be easy enough that someone new to robotics could make it. At the same time, I wanted the results be a robot that they could have fun playing with, and also be something that would impress their friends.