Stored weather data on IOTA Tangle with Webduino Smart

Introduction

This code works best with the Webduino Smart and an temperature and humidity sensor to build a simple blockchain IoT environmental sensor demonstration.

Temperature and humidity data issue from the sensors and store in IOTA Tangle every one hour in send.html file,then fetch all data from IOTA Tangle and visualize as a line chart in index.html file.

Architecture

Prepare

• Hardware
  • Webduino Smart
  • Temperature and humidity sensor
• Software
  • Tangle-accelerator
    • You can issue and fetch the data by a public IOTA full node directly, but Tangle-accelerator provides:
      • An IOTA permanode for public usage;
      • Load-balancers to interact full nodes providing blockchain-based services;
      • Hardware-accelerated caching proxy service for extremely fast blockchain transaction, especially for lookup and batched data manipulation;
      • The APIs is ideal for the use scenarios of Proof-of-Existence(PoE) and Decentralized Identifiers (DIDs);

Data Visualization