Water Temperature Sensors

This project aims at building a network of internet-connected water temperature sensors around the Zürichsee using the Particle Electron.

The prototype is a regular indoor temperature sensor using the Particle Photon.

Photon Setup

Install the Particle CLI: https://docs.particle.io/core/cli/

Log in to your Particle account:

$ make login

Set up your device:

$ make setup

Flashing

To flash the firmware to a Particle Photon, first list the available Photons:

$ make list

Then flash the current directory through the cloud:

$ make DEVICE=<0123456789ABCDEFGHI> flash-ota

...or via USB:

$ make DEVICE=<0123456789ABCDEFGHI> flash-usb

(Replace the device id with the id found in the first command output.)

Viewing temperature

To display the measured temperature:

$ make DEVICE=<0123456789ABCDEFGHI> temp

Wiring

To wire a DS18B20 sensor to the Photon:

• VCC (usually red) -> 3.3V
• GND (usually black or blue) -> GND
• Data (usually yellow or white) -> D0
• 4.7k resistor from Data to VCC

Links

• DS18B20 Datasheet: http://neutrino.phys.ksu.edu/~gahs/doublechooz/DC_SlowMRS/DS/DS18B20.pdf
• Particle Firmware: https://github.com/spark/firmware/tree/latest