Now connect the relay signal pin to any digital pin of Arduino except pin 13. Here I have connected it to pin 3 as shown in the image below. The next step is to connect the soil moisture sensor with ...

The Arduino Uno is based on an ATmega328 microcontroller This board includes 14 digital I/O pins, a power jack, 6 analog input pins, a 16MHz ceramic resonator, a USB connection, a reset button, and an ...

To work with the sensor we need to power the sensor first, for that we are using the 5V and GND pin of the Arduino UNO Board. As shown in the above arduino soil moisture sensor circuit diagram we have ...

This document describes how to connect an Arduino Due to an Arduino Uno for further I²C protocol communication. Since there was no Due in Fritzing I used a Mega which presents the same SDA ...