Open source data logger for a Raspberry Pi
- Analog-to-Digital converters are connected through the I2C interface to the GPIO header of the Raspberry Pi.
- The real-time kernel Linux embedded software samples analogue voltages with up to 500Hz frequency (2 channels simultaneously, each in differential mode).
- The data is stored in high compression NETCDF4 format (binary) which can be easily processed with any Computer algebra program (Matlab, Octave, Scilab and of course with python numpy).
- Optionally the Raspberry runs a lightweight web server with diagnostic tools. The reports and log files are updated in real-time (websocket connection).