This document presents the design and development of an online Interactive Data Acquisition and Control System (IDACS) using an ARM-based embedded web server. The system uses an ARM9 processor running a Real-Time Linux operating system to handle data acquisition and control functions as well as hosting an embedded web server. Sensors are interfaced to the ARM9 to measure parameters like temperature, humidity, gas levels etc. The embedded web server allows clients to access the sensor data and send control instructions through a web browser interface. The system aims to provide a low-cost, low-power solution for real-time data acquisition and control in industrial applications.