Table of Contents
This case study explores the development of an affordable embedded data logger capable of precise measurements. It highlights the design choices, components, and implementation steps involved in creating a cost-effective solution for data acquisition applications.
Design Objectives
The primary goals were to minimize costs while maintaining measurement accuracy. The system needed to support multiple sensor inputs, operate reliably over extended periods, and be easy to assemble and deploy.
Hardware Components
The data logger utilized the following key components:
- Microcontroller: An Arduino Uno for processing data.
- Sensors: Temperature, humidity, and voltage sensors.
- Memory: MicroSD card module for data storage.
- Power Supply: Lithium-ion battery with charging circuitry.
Implementation and Calibration
The assembly involved connecting sensors to the microcontroller and integrating the storage module. Calibration was performed using known reference standards to ensure measurement accuracy. The system was programmed to log data at predefined intervals and store it efficiently.
Performance and Results
The completed data logger demonstrated reliable operation with measurement errors within ±0.5%. Its low cost and straightforward design make it suitable for various field applications requiring accurate data collection.