Playing back logged data?

Development Boards Arduino
1

Hello Everyone,

I’ve been working on making a data logger for my motorcycle using an Arduino UNO R3. Now instead of going crazy and wiring the bike up first, I decided it was probably best to get a feel for the process using the output of a potentiometer as the data to be logged. My goal is to get from start to finish using this simple setup, then expanding it to the full monty. So start to finish for me is; i) reading sensor data and saving it to a microSD card, ii) transfer that to my laptop, iii) playback the logged data so that it can be recorded with fraps or something similar, iv) overlay the telemetry on a video of the actual session. The only real snag I’ve come across thus far is how to playback the logged data. My original intention was to use an existing telemetry program, Motec i2 Pro https://www.youtube.com/watch?v=a7P-Rkikv-U But using non-native file formats requires a license from Motec which is quite expensive.

Really all I need is to be able to display bar graphs of the sensor’s output that changes with time, I’m just drawing a blank as of how to do that. All of the data logging write-ups I’ve read have been putting the data into excel and graphing it or just plotting it otherwise. Any ideas?

Thanks,

Jeff

2

As for storage: you will probably have to store the data in a FAT file format.

As for playback: You could create a custom C or Java or whatever language program to display it. I personally enjoy C#, because I learned it before I went to electronics. You can port in the file from the SD card, and the computer can display the graph. Pretty simple coding.