Sensors

digilog.pk carries a wide selection of electronic sensors compatible with Arduino, ESP32, and Raspberry Pi — covering temperature, humidity, motion, gas, current, pressure, light, soil, and inertial measurement. These ready-to-use breakout modules let you add sensing capability to any project in minutes, with standard I2C, SPI, UART, or analog output interfaces and breadboard-friendly 2.54mm headers.

Sensor Categories

• Temperature & Humidity — DHT11, DHT22, BME280, AHT20, DS18B20 waterproof probe
• Distance & Proximity — HC-SR04 ultrasonic (2cm–4m), VL53L0X ToF (up to 2m), IR obstacle sensor
• Motion & Presence — PIR HC-SR501, RCWL-0516 microwave radar, vibration SW-420
• Gas & Air Quality — MQ-2, MQ-5, MQ-7, MQ-135, SGP30 TVOC, CCS811
• Light & Colour — BH1750, TSL2561, TCS3200 colour sensor, LDR module
• Current & Power — ACS712 (5A/20A/30A), INA219 I2C, ZMCT103C split-core CT
• Pressure & Altitude — BMP280, BMP388, MS5611
• IMU (Inertial) — MPU6050 6-DOF, MPU9250 9-DOF, ICM-20948
• Soil & Water — capacitive soil moisture, rain sensor, water level float switch

Related Categories

Process all sensor data with Arduino or ESP32. Show readings on screens from Displays & Modules. Trigger relay outputs based on thresholds — see Relays & Switches. For the full sensor catalogue including industrial sensors see Sensors & Detectors.

Common Applications

• Weather monitoring — BME280 + ESP32 + OLED display, data sent to cloud
• Smart irrigation — soil moisture sensor + relay + pump automation
• Security system — PIR sensor + buzzer + GSM alert — see Modules
• Energy monitoring — ACS712 + ESP32 for electricity consumption logging
• Drone stabilisation — MPU6050 IMU for flight controller PID loop

How to Choose

1. Interface — I2C for multiple sensors on one bus; analog for simplest code; digital for threshold output
2. Accuracy — DHT22 (±0.5°C) vs DHT11 (±2°C); BME280 (±0.5°C + pressure + humidity)
3. Range — match sensor range to your application; HC-SR04 up to 4m; VL53L0X up to 2m
4. Power — check sleep current for battery-powered IoT; PIR can run on µA in standby

Learning Resources

• DHT11/DHT22 Complete Guide — Random Nerd Tutorials
• BME280 Arduino Tutorial — Last Minute Engineers — temperature, pressure, humidity with I2C
• HC-SR04 Ultrasonic Distance Sensor — wiring and timing diagram
• MPU6050 Accelerometer Tutorial — 6-DOF IMU with Arduino

Need modules to expand your sensor project? Browse Modules & Breakout Boards. For bulk sensor procurement for IoT product lines contact info@digilog.pk.