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Neo Smart IoT

Overview

Neo Smart IoT is a project contribution to the Neo Smart Economy Network to enable control of IoT (Internet of Things) devices via Neo smart contracts.

To operate an IoT device, a contract may operate for free, take payment in the form of Neo or Gas, or hold Neo as a deposit that can be returned to the user when control is no longer needed.

At a high level, a smart contract is deployed to the Neo blockchain. This contract contains functionality that allows values to be sent to IoT devices to control them. I.e., a payment could be sent to control a device that opens a lock, plays a song on a jukebox, or dispenses an item from a vending machine. The possibilities are endless.

Components

The Neo Smart IoT system consists of four components:

  • Node.js web frontend

    This part allows a normal user to see devices available for control by the smart contract. The web frontend uses a Chrome extension called NeoLink to authorize transactions.

  • neo-pubsub.py

    Python Neo blockchain transaction monitor and MQTT queue

  • elcaro-contract.py

    This is the Neo smart contract on the blockchain that stores devices and their fees, if any, to operate.

  • IoT device firmware

    This is the code that operates the IoT device.

Video Demonstration

Check out a video demonstration of the complete system over at the Splyse, Inc. YouTube channel.

Run the Demo

  1. Go to https://github.com/CityOfZion/NeoLink and follow the instructions to setup NeoLink.

  2. Ensure that a wallet is open in NeoLink.

  3. Go to https://iot.splyse.tech/

  4. Login with:

email: neo@splyse.tech

password: neo
  1. You should now be on the Devices page. Enter a color, in the form of ff00ff or similar, into the setting input field and press pay. If your wallet is open you should see a message in the web page telling you to open NeoLink and authorize a transaction.

  2. Open NeoLink and authorize the transaction. It will only cost .00025 gas on TestNet.

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Control IoT devices from a smart contract on the Neo blockchain

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