DIY remote environmental logger

This project demonstrates how fargin firmware works in a real-world application.

• logger

  • It's technically an SDI-12 "recorder" but most users would just call it a "logger". It collects, stores and uploads data from one or more SDI-12 sensors.

• environmental monitoring

  • SDI-12 is typically used for acquiring data about the environment

    • ground, water and air temperatures

    • water levels and velocity

    • water quality

    • wind velocity

    • air pressure

    • humidity

    • seismology

    • snow depth

    • etc, etc

• remote

  • This logger can be deployed anywhere on the planet and will operate unattended for as long as it has power (solar charging is typically needed).

  • The logger sends and receives messages via satellite.

    • sensor data

    • maintenance data (e.g. battery health, gps location, file system stats, etc)

    • application code changes

      • on-the-fly - i.e. without resetting the mcu or restarting the application

• DIY (DoItYourself) hardware

  • This is a firmware project - not a hardware project. This firmware is intended to be ported to your hardware which needs:

    • an mcu with plenty of flash and ram (for example, the Adafruit ItsyBitsy M4 with 512K flash and 192K ram or the Sparkfun Thing Plus - SAMD51 with 1M flash and 256K ram)

    • 1 or more SDI-12 ports (each port can read multiple SDI-12 sensors)

    • fixed non-volatile storage for application code, logging data and satellite messages

      • consider removable sd card for logging data

    • usb port for initial setup prior to deployment

    • an Adafruit RockBLOCK 9603 Iridium satellite modem

    • power source (most likely a solar panel)

Notes:

• • this firmware implements SDI-12 version 1.4 dated Feb 20, 2023

  • compare this logger to the Arduino-compatible EnviroDIY Mayfly Data Logger

contact: SDI-12@FarginFirmware.com