In this community project, developer Hendra Kusumah demonstrates how Sensirion’s SHT40 temperature and humidity sensor can be used to build a fully offline, wireless lab monitoring system. Using two ESP32 boards and ESP-NOW communication, the project transmits real-time climate data from the SHT40 sensor to a remote LED matrix display. The entire system works without Wi-Fi, cloud connectivity, or network infrastructure.
The result is a robust and easy-to-implement solution for classrooms, labs, and isolated environments where reliability and simplicity matter. This user-generated project highlights how Sensirion sensors integrate seamlessly into embedded designs that combine accurate environmental sensing with low-latency wireless communication and clear visual feedback.
Explore the full project, circuit diagrams, and source code on Hackster.io.
If you want to learn more about our SHT40 humidity and temperature sensor, click here.