IoT Data Logger for Pharmaceutical Cold-Chain Monitoring
- Client
- Pharmaceutical
- Year
- 2023
- Category
- Internet of Things (IoT)

This project covered the path from bench prototype to a deployable product: PCB and firmware development, a custom enclosure, small-batch production, and a dashboard for monitoring temperature-sensitive pharmaceutical storage.
Temperature and humidity measurement with DHT22, live values on a local OLED, and cloud data displayed through a web dashboard with interactive trend charts.
A custom 3D-printed enclosure self-designed and printed in-house, and the full pipeline from PCB design → firmware → enclosure → small-batch production → cloud deployment.
The Challenge
Temperature-sensitive products require records that make storage trends and deviations reviewable. The project needed a compact device for data logging, local display, and dashboard review; calibration and regulatory requirements must be defined and assessed separately for each application.
Our Approach
The ESP32-based device records temperature and humidity with a DHT22 sensor and shows current values on a local OLED. Data is sent to a cloud database and displayed in a web dashboard with interactive trend charts. Each unit uses a custom 3D-printed enclosure, with PCB, firmware, enclosure, small-batch production, and web software developed as one system.
The Result
The result was a small batch of devices for cold-chain condition monitoring, paired with a web dashboard, interactive trend charts, and report exports.
Results
- Small batch produced for defined operational monitoring
- Reviewable records for pharmaceutical storage conditions
- Web dashboard with interactive charts for trend analysis
Have a similar project?
Get in touch with NELSco's engineering team to discuss your project requirements.