Angle measurement using gyro, accelerometer and Arduino

The device is a rough prototype of what will eventually become a self balance robot, this is the second part of the hole thing (read accelerometer and control a motor to self balance). The first part with only the gyro can be found here.
On this instructable we will measure the angle using both gyro and accelerometer, and using a technique to merge both sensor to get a smooth signal. The technique is called "complementary filter".

previous

Step 1 What we gonna need:

Some part can be replace, and some modification at the code have to be made to fit your hardware.
On this project we will use:
- Breadboard
- Microcontroller, I used the Arduinoboard
- Wire
- Jumper Wires
- Gyroscope XV-8100
- Nunchuck Wii (for the accelerometer)
- Nunchuck Wii adapter for Arduino

Comments

[ontreus]

Desculpe-me, é que estou construindo um bicoptero e estou com um problema no equlibrio de todo o sistema, estudando seu codigo: angle_for_instructable.pde
Não vi nenhuma linha para a execução dos motores que vc usou no seu robô.
estes comandos estão em um outro arquivo a parte?
Obrigado pela atenção.

[jgeidl]

The code link does not link to a .rar but to a .tmp file. Is the code link available somewhere else?

Thanks,

Jim

[vivekchopra]

i need to build a human body sensor using an accelerometer and a gyroscope........and i am gonna use labVIEW as software for analysis.....can you please help me with the microcontroller part........should i go with lpc2138???

thanks

[skeleton1102]

Is there any information about how that formula is derived, because I hate using things i dont fully understand

[otaviousp]

Read this instructable first, there is a plenty of information.

http://www.instructables.com/id/Accelerometer-Gyro-Tutorial/

Any doubt feel free to ask.

[skeleton1102]

I mean the one to calculate the angle using accelerometers.

[paolo.mosna]

Sorry If i bother you but where can I buy the gyroscope device you used in your realization?

[otaviousp]

I bought this gyro at eBay. But is no longer available.

[Accentrix]

Thanks for the explanation. I was waiting for someone to do this.

[WyoJustin]

Thanks, I'll need this for my next project.

Justin

[otaviousp]

Nice, xD

[gellis3000]

When I try to download the .rar, all I get is a .tmp file. I have tried 3 different browsers, how does this work?

[otaviousp]

Try just renaming from .tmp to .rar