Pakistan's #1 Arduino Platform

BUILD.
CODE.
INNOVATE.

Learn embedded systems, build real IoT projects, and buy complete kits for Arduino & ESP32 — delivered across Pakistan with COD.

20+

Projects

500+

Students

3

Payment Options

ARDUINO UNO R3

PWM

I2C

SPI

UART

// Featured Projects

LEARN BY BUILDING

🔐Arduino + Keypad

Home Automation

PASSWORD DOOR LOCK

Build a secure keypad-controlled door lock using Arduino, a 4x4 matrix keypad, and servo motor.

Intermediate

🌱Arduino + Sensors

Agriculture IoT

AUTO PLANT WATERING

Automate plant watering with a soil moisture sensor, relay module, and water pump — fully autonomous.

Beginner

📡ESP32 + WiFi

IoT / WiFi

ESP32 HOME MONITOR

Monitor temperature, humidity & motion remotely via WiFi using ESP32 and Blynk dashboard.

Advanced

// Online Store

COMPLETE PROJECT KITS

🔐Bestseller

PASSWORD DOOR LOCK KIT

Complete kit with Arduino Uno, 4x4 keypad, servo motor, LCD display & all wiring.

Rs. 2,800 Rs. 3,500

Arduino Uno R3
4x4 Matrix Keypad
SG90 Servo Motor
16x2 LCD + I2C
Pre-loaded code

🌱New

AUTO PLANT WATERING KIT

Smart garden system — soil sensor triggers pump automatically. Plug & grow.

Rs. 1,950 Rs. 2,400

Arduino Uno R3
Capacitive Soil Sensor
5V Water Pump + Tube
Relay Module
Full Assembly Guide

📡

ESP32 HOME MONITOR KIT

WiFi-enabled IoT kit. Monitor your home from anywhere via smartphone.

Rs. 3,200 Rs. 4,000

ESP32 Dev Board
DHT22 Temp/Humidity
PIR Motion Sensor
OLED Display
Blynk App Setup Guide

🤖

LINE FOLLOWING ROBOT

Classic robotics project — IR sensors, L298N motor driver, chassis included.

Rs. 3,500 Rs. 4,200

Arduino Uno R3
IR Sensor Array
L298N Motor Driver
Robot Chassis + Wheels
Full Tutorial

// Payment Methods

PAY YOUR WAY

🚚

CASH ON DELIVERY

Pay when your kit arrives at your door. Available across all of Pakistan. No advance needed.

📱

EASYPAISA / JAZZCASH

Transfer instantly via your mobile wallet. EasyPaisa and JazzCash both accepted. Fast confirmation.

🏦

BANK TRANSFER

Direct bank transfer accepted from all major Pakistani banks including HBL, UBL, Meezan & more.

// Find Us

OUR LOCATION

📍 Salien HQ

🏙️Islamabad, Pakistan

📞+92-XXX-XXXXXXX

✉️contact@salien.pk

⏰Mon–Sat: 9am – 7pm PKT

🚀Nationwide delivery via TCS / Leopard

📍 Open in Google Maps

📍 ISLAMABAD, PK Click to open map

Founder & Lead Engineer

SUFYAN
SARWAR

// Creator of SALIEN

Sufyan Sarwar is a passionate embedded systems engineer and IoT enthusiast from Pakistan. He founded SALIEN with a mission to make Arduino and ESP32 education accessible to every student in Pakistan — with real kits, real code, and real projects. Sufyan believes in learning by building, and everything on this platform reflects that philosophy.

20+

Projects Built

500+

Students Taught

3+

Years Experience

// Knowledge Base

PROJECT TUTORIALS

Step-by-step guides with full code, schematics, and wiring diagrams for every project.

🔐

PASSWORD DOOR LOCK SYSTEM

Arduino + Keypad + Servo

🔐

📋 Step-by-Step Instructions

1
Connect the 4x4 matrix keypad rows to Arduino pins 9,8,7,6 and columns to pins 5,4,3,2
2
Wire the SG90 servo signal wire to Arduino pin 10, VCC to 5V and GND to GND
3
Connect LCD via I2C: SDA→A4, SCL→A5, VCC→5V, GND→GND
4
Upload the code below and set your desired 4-digit password
5
Enter password on keypad — servo unlocks on correct input, LCD shows status

📡 Wiring / Schematic

Component	Pin	Arduino Pin
Keypad Row 1	R1	D9
Keypad Row 2	R2	D8
Keypad Col 1	C1	D5
Keypad Col 2	C2	D4
Servo Signal	PWM	D10
LCD SDA	SDA	A4
LCD SCL	SCL	A5

💻 Arduino Code

// Salien — Password Door Lock System
#include <Keypad.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>

const char PASSWORD[] = "1234";
char input[5]; int idx = 0;
Servo myServo;
LiquidCrystal_I2C lcd(0x27, 16, 2);

char keys[4][4] = {
  {'1','2','3','A'},{'4','5','6','B'},
  {'7','8','9','C'},{'*','0','#','D'}
};
byte rowPins[4]={9,8,7,6};
byte colPins[4]={5,4,3,2};
Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,4,4);

void setup() {
  myServo.attach(10); myServo.write(0);
  lcd.init(); lcd.backlight();
  lcd.print("Enter Password:");
}

void loop() {
  char key = keypad.getKey();
  if(key){
    if(idx < 4){ input[idx++]=key; lcd.setCursor(idx-1,1); lcd.print('*'); }
    if(idx==4){
      input[4]=0;
      if(strcmp(input,PASSWORD)==0){
        lcd.clear(); lcd.print("UNLOCKED!");
        myServo.write(90); delay(3000); myServo.write(0);
      } else {
        lcd.clear(); lcd.print("WRONG! Try again"); delay(2000);
      }
      idx=0; lcd.clear(); lcd.print("Enter Password:");
    }
  }
}

🌱

AUTO PLANT WATERING SYSTEM

Arduino + Soil Sensor + Pump

🌱

📋 Step-by-Step Instructions

1
Insert capacitive soil moisture sensor into soil; connect AOUT to Arduino A0
2
Connect relay module IN pin to Arduino D7, VCC to 5V, GND to GND
3
Wire the water pump through the relay's NO (Normally Open) terminal
4
Set moisture threshold value (typically 500 for dry soil)
5
Upload code — pump activates automatically when soil is dry

📡 Wiring / Schematic

Component	Pin	Arduino Pin
Soil Sensor AOUT	Analog Out	A0
Soil Sensor VCC	Power	3.3V
Relay IN	Signal	D7
Relay VCC	Power	5V
Pump (+)	Relay NO	via Relay
Pump (-)	GND	External GND

💻 Arduino Code

// Salien — Auto Plant Watering System
const int SOIL_PIN = A0;
const int RELAY_PIN = 7;
const int THRESHOLD = 500; // Adjust for your soil
const int PUMP_DURATION = 3000; // 3 seconds

void setup() {
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, HIGH); // Relay OFF (active LOW)
  Serial.begin(9600);
}

void loop() {
  int moisture = analogRead(SOIL_PIN);
  Serial.print("Moisture: ");
  Serial.println(moisture);

  if(moisture > THRESHOLD) { // Dry soil
    Serial.println("Soil dry — watering!");
    digitalWrite(RELAY_PIN, LOW);  // Pump ON
    delay(PUMP_DURATION);
    digitalWrite(RELAY_PIN, HIGH); // Pump OFF
    delay(10000); // Wait 10 sec
  } else {
    Serial.println("Soil moist — OK");
    delay(5000);
  }
}

📡

ESP32 HOME MONITOR

ESP32 + DHT22 + WiFi + Blynk

📡

📋 Step-by-Step Instructions

1
Install ESP32 board in Arduino IDE via Boards Manager (URL: espressif)
2
Connect DHT22 data pin to GPIO4, VCC to 3.3V, GND to GND with 10k pull-up
3
Wire OLED display: SDA→GPIO21, SCL→GPIO22
4
Install Blynk app, create new project, copy Auth Token
5
Upload code with your WiFi SSID, password and Blynk token

📡 Wiring / Schematic

Component	Pin	ESP32 Pin
DHT22 Data	OUT	GPIO4
DHT22 VCC	Power	3.3V
OLED SDA	Data	GPIO21
OLED SCL	Clock	GPIO22
PIR OUT	Signal	GPIO13

💻 ESP32 Code

// Salien — ESP32 Home Monitor
#define BLYNK_AUTH_TOKEN "YOUR_TOKEN_HERE"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

char ssid[] = "YOUR_WIFI";
char pass[] = "YOUR_PASS";
DHT dht(4, DHT22);
BlynkTimer timer;

void sendData() {
  float temp = dht.readTemperature();
  float hum  = dht.readHumidity();
  Blynk.virtualWrite(V0, temp);
  Blynk.virtualWrite(V1, hum);
  Serial.printf("Temp: %.1f°C  Hum: %.1f%%
", temp, hum);
}

void setup() {
  Serial.begin(115200);
  dht.begin();
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  timer.setInterval(2000L, sendData);
}

void loop() {
  Blynk.run();
  timer.run();
}

// Secure Order

PLACE YOUR ORDER

Complete the form below — we'll confirm via WhatsApp

🔐

Password Door Lock Kit

Rs. 2,800

Full Name *

Phone Number *

Delivery Address *

Quantity

Payment Method *

🚚 Cash on Delivery

📱 EasyPaisa / JazzCash

🏦 Bank Transfer

✅ Order placed successfully! We'll contact you on WhatsApp within 2 hours to confirm your delivery. Thank you for choosing Salien!

BUILD.CODE.INNOVATE.

LEARN BY BUILDING

COMPLETE PROJECT KITS

PAY YOUR WAY

OUR LOCATION

📍 Salien HQ

SUFYANSARWAR

PROJECT TUTORIALS

PLACE YOUR ORDER

BUILD.
CODE.
INNOVATE.

SUFYAN
SARWAR