An Arduino based accleration logger, writes to an SD-card or streams to a computer.
This project is about logging acceleration data, simple as that. The unit can either run on batteries and write to an SD-card, or stream to a connected computer. The Arduino-sketch is timed to approximate 500Hz sampling rate, with a varying error of ca +/- 3ms
This repo contains a shopping list detailing the components of the logger, as well as gerber files for PCB-production and an assembly manual. Feel free to make your own :)
The project is provided "as-is", with no warranties. Batteries not included! But if you find any obvious improvements, feel free to post an issue.
Assembly requires soldering as well as a drill with a 7mm and a 15mm drill. The unit can run on both a 9V battery or 6xAA batteries with the specified battery holder. Running on AA-batteries gives a substantially longer logging time. (tests show 36-40 hours of runtime on AA batteries, beware of large data-files!)
You might be interested in splitting the datafile if it becomes too large to open on your computer. http://www.hjsplit.org/ is a free program which does that for you.
If you have no other way of producing PCB's, it can be ordered from here (be advised, Rev A (unmarked) and Rev B has critical errors on the board. Rev A may be used, : https://www.pcbway.com/project/shareproject/Arduino_acceleration_logger.html
Recent addition; Automatic Python based RTC clock-setting script To use, download and install PySerial in addition to Python. Run the script, and input the serial port name where your Arduino is connected, the rest is done for you.