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ESP32 C4002 Human Presence Sensor

Human Presence Sensor Using ESP32 & C4002 | Motion Detection

Build an ESP32 human presence sensor using the DFRobot C4002 mmWave radar. Detect motion & static presence to automate fan, and lights.

  • Subhajit
  • October 16, 2026
Blynk MQ2 gas sensor ESP32

MQ2 gas sensor and Rain detection with Blynk Notification

Make an IoT-based MQ2 Gas sensor and rain detection system using NodeMCU ESP8266 or ESP32 with Blynk Notification. (Circuit + Code).

  • Subhajit
  • April 25, 2022

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Explore simple IoT Projects on Home Automation, Internet of Things using Arduino, ESP8266, ESP32, ESP32 CAM, LoRa for engineering students. All projects explained with source code, circuit diagram, woking principle.

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