This version of the MWM datalogger materials (December 2019) is a first formal release of working code that we are actively using in the field for data collection.

Datalogger hardware:

• Base logger is an Arduino Pro with code written in Arduino IDE
• Hardware is running at 3.3 V and 8 MHz
• Works with a sensor installed on the outside of a magnetically driven residential water meter
• Processes data from a LIS3MDL magnetometer sensor sampling at 570 Hz

Software includes the following features:

• Stores pulse count from water meter on an SD Card - full SD cards or MicroSD can be used in sizes up to 32GB (we are currently using 8 GB cards)
• Provides menu options for pulse count resolution, initialization of date and time, diagnostic listing of current water flow, control over starting and stopping logging sessions

Known issues:

• With this version there is a known issue in writing data to the SD card that causes some data files to become corrupt. We believe that this is power-related.