Hi, I was wondering if it was possible to collect data from a sensor and save the data with its corresponding time?
I am attempting a project where I connect a rotary encoder to the Arduino and wish to save the angular position against time in a table. I've read that the Arduino can count time on its own and was wondering if what I am trying to do is possible?
Thanks!
What kind of time.
Time between power-up and between changes is easy.
Just save events as millis() in an unsigned long array.
Absolute time (timezone/year/month/day/hour/minute/second) requires a RTC (RealTimeClock) module or NTP (internet time).
Leo..
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That is what the millis() function is used for. For time of day and date use the Arduino Timelib.h library. It is not very accurate, and may gain or lose a couple of minutes per day.
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Thanks!
Have you got the arduino to display the position of the rotary encoder on its own?
Where are you saving the data? Must it survive a power up/down cycle?
My idea is
Arduino UNO+DS1307 RTC module+SD card+SD card storage board+ Encoder.
The position of your encoder will be stored inside the SD card in a text file. Time and value, both will be written. You will be able to transfer the data to Microsoft excel.
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