Fritzing

This will show how to make a Bluetooth Low Energy Internet of Things device to monitor the Electrical Conductivity for hydroponics.

• 
• 

Visit hackster.io for the full build instructions.

 

It will walk you through creating the connections to the ESP32 and the uFire EC-Salinity board.

 

The ESP32 provides Bluetooth Low Energy wireless interface. The uFire device and probe will measure the conductivity of your water sample.

 

And finally, there is a simple example of how to connect to the BLE interface through your Chrome browser to display the information.