faucet (open/close) with arduino and sim800l
Step 1: Gather Materials
- Arduino board (e.g. Arduino Uno)
- SIM800L GSM module
- Faucet with solenoid valve
- Breadboard
- Jumper wires
- Power supply (e.g. 9V battery)
Step 2: Connect the Hardware
- Connect the SIM800L module to the Arduino board using jumper wires. Connect the RX pin of the SIM800L to the TX pin of the Arduino and vice versa.
- Connect the solenoid valve of the faucet to the Arduino using jumper wires. Connect one wire to the solenoid valve's positive terminal and the other to a digital pin of the Arduino (e.g. pin 8).
- Connect the power supply to the Arduino and the SIM800L module.
Step 3: Write the Code
- Open the Arduino IDE and create a new sketch.
- Import the necessary libraries for the SIM800L module (e.g. SoftwareSerial, SIM800L)
- Write a function to send an SMS message when the faucet is opened. This function should include the command to open the solenoid valve and send an SMS message to a designated phone number.
- Create a loop that continuously checks for a received SMS message. When a message is received, check if it matches a specific command (e.g. "open faucet"). If it does, call the function to open the faucet and send an SMS message.
Step 4: Upload the Code
- Connect the Arduino board to your computer using a USB cable and upload the code to the board.
Step 5: Test the System
- Send an SMS message to the Arduino with the command to open the faucet (e.g. "open faucet"). The faucet should open and an SMS message should be sent to the designated phone number.
- Close the faucet by sending another SMS message with the command to close it (e.g. "close faucet"). The faucet should close and an SMS message should be sent to the designated phone number.
shematic:
code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #include <SoftwareSerial.h> SoftwareSerial SIM800l(2, 3); // RX, TX int faucetPin = 8; // Pin to control the faucet void setup() { SIM800l.begin(9600); pinMode(faucetPin, OUTPUT); SIM800l.println("AT+CMGF=1"); // Set SMS to text mode delay(1000); } void loop() { if (SIM800l.available() > 0) { String message = SIM800l.readString(); if (message.indexOf("OPEN") != -1) { // Check if the message contains "OPEN" digitalWrite(faucetPin, HIGH); // Turn on the faucet } else if (message.indexOf("CLOSE") != -1) { // Check if the message contains "CLOSE" digitalWrite(faucetPin, LOW); // Turn off the faucet } } } |
Note: This is a basic example and can be further expanded to include additional features such as a timer for automatic faucet closure, or integration with other sensors or devices.
