It works in two different modes, Normally Open (NO) and Normally Closed (NC). in our project, we will use it in Normally Open mode which means when the relay is switched off the circuit will be broken ...

Automatic Irrigation System Using Arduino Uno Build Time: 3-5 hours | Cost: $25-35 | Difficulty: Beginner-Intermediate What You'll Learn: How to interface a soil moisture sensor with Arduino and ...

Step 1 (Connect SIM900 With Arduino) Use picture as a reference for connecting SIM900 to Arduino. Step 2 (Connect Relay with Arduino) Connections are given Below : Arduino Relay Module +5V VCC GND GND ...

The first relay drives the water/fuel pump motor and the second relay drives the solenoid valve. Here, ULN2003 relay driver IC is being used to drive both relays. The circuit can fill half a liter of ...

And when the sensor detects as water/ moisture level is above 500 it means there is a lot of water content so Arduino will turn off the relay leading to turn off the pump. This turning off process is ...

Simply connect the moisture sensor and the water pump (through the relay) to the Nano RP2040 Connect board, insert the moisture sensor in a flower pot, and put the pump in a recipient filled with ...

The kit includes 18 essential items, featuring an ADIY Uno DIP R3 (CH340C) board compatible with Arduino, along with a range of sensors such as IR, sound, gas, soil moisture, and more. It also ...