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TinyDuino Processors & TinyShields / Model Rocket Acceleration Project
« on: November 26, 2017, 02:42:25 AM »
Attached is the pdf plot of acceleration data from a data logger of acceleration data using the accelerometer board, and SD card board.
I was able to use the data to calculate the drag coefficient for the rocket, velocity during liftoff to apogee.
The data is quite interesting, but the board can collect data every 0.5 msec but the data takes 30 msec to write to the card. One way around this problem would be to buffer the data and write less often. This technique would effect the timing and therefore require some other way to know how much time has passed. I asked in an earlier post if anyone knew how to read the cpu time, because I only need a running time. I assume that the time must be stored in a register - any ideas?
I was able to use the data to calculate the drag coefficient for the rocket, velocity during liftoff to apogee.
The data is quite interesting, but the board can collect data every 0.5 msec but the data takes 30 msec to write to the card. One way around this problem would be to buffer the data and write less often. This technique would effect the timing and therefore require some other way to know how much time has passed. I asked in an earlier post if anyone knew how to read the cpu time, because I only need a running time. I assume that the time must be stored in a register - any ideas?