[billbo911]

Originally Posted by The Doctor

Here is a datalogger that I have been designing for use in testing our robot.

Parts:



I used two IMUs from past Kits Of Parts, along with a Parrallax 3-axis magnetometer. This ended out with a total of 9 degrees of freedom:

• 3 axis magneto
• 3 axis accelerometer
• 2 axis accelerometer
• A rotational gyro

Not really degrees of freedom, but these are there too:

• A temp. sensor for the gyro
• An RTC
• 4-5 DS18B20 temp sensors (for motors)
• SD card for datalogging

It periodically gets the data from all the sensors, and prints it to the serial port and saves it to a CSV file on the SD card.

I will make the code available soon, once I get an SD card glitch worked out. I really wish we had finished our robot sooner (that 11:58 on the last day), because I wanted to try it out with this datalogger.

I would love to see your code on this. I always enjoy reading other peoples code, as it gives me great ideas for projects I'm already doing or plan to do.

For example, my son and I are building an automatic dog self-fetching machine. It throws the ball, the dog returns it, drops it into the machine, and it shoots the ball again. Then the cycle repeats.

I also plan on building a dual axis accelerometer data logger. I'm curious to compare car driving styles between people based on how smoothly they drive. I want to use logged acceleration data as the criteria for "smoothness".