Industrial Pulse
Industrial IoT condition monitoring
From sensor to screen: equipment telemetry over MQTT, stored in PostgreSQL and monitored live on a bilingual dashboard.
Smart home with blockchain control
Blockchain-Enabled IoT Smart Home
Sensors and relays on a Raspberry Pi, controlled through an Ethereum smart contract and a Node-RED dashboard.
Overview
A smart home where every command and state change is a signed transaction. A Raspberry Pi reads temperature, humidity, gas and motion, drives relays for lights, a fan and a door, and syncs state with a Solidity contract that keeps an owner, admins and a user registry. A Node-RED dashboard talks to the same contract.
The challenge
Smart homes usually depend on one central server. The goal was a system where only registered users can change device state, and every change is recorded on-chain.
Our approach
Key capabilities
- Solidity contract with owner, user registry, device state and commands
- Python controller that signs transactions with web3.py
- DHT22, MQ-2 and PIR sensing with five relay outputs
- Multi-rate main loop for sensing, control and chain sync
- Node-RED dashboard and deployment scripts
Inside the project
Outcomes
- Tamper-evident history of every command and state change
- Access limited to registered users by the contract itself
- Full stack from GPIO to dashboard in one codebase
Technology
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