Questions tagged [iot]

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30 views

Unable to Synchronize raspberry pi node my private network

I have created a private network with 3 nodes - two nodes in computer and one in raspberry pi I connected computer and raspberry pi to same network through LAN computer ip: 192.168.122.1 pi ip ...
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1answer
38 views

Blockchain usage in smart home

I am currently gathering information for my thesis about smart home implementaton with a use of blockchain. The blockchain usage is a requirement from my thesis supervisor and I have huge problem with ...
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0answers
17 views

ethereum smart cotract ioT implementation

For the preparation of a project in my thesis, I need to implement ethereum blockchain to control the access of the IoT using smart contract. Can you recommend me a tutorial to prepare this without ...
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0answers
39 views

IoT solution for blockchain

I would like to experiment with an integration with Iot and blockchain. My idea is to save a pair of keys (privKey, pubKey) inside an IoT device in order to sign the transactions and send them to a ...
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2answers
434 views

Input from IOT devices direct to the smart contracts?

I went through almost all the answers on IOT but not got the answer. I want to create a DAPP which takes temp as input from IOT device and trigger function in the smart contract. I know the options ...
2
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1answer
48 views

“Elkrem:” Does it install an Ethereum client on a micro-controller?

I have read this article which describes the prototype of Ethkrem, a development board for IOT and Ethereum: https://devpost.com/software/elkrem-development-board-for-iot-ethereum . However, it is ...
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1answer
169 views

ACCESSING BLOCKCHAIN ON “ESP8266” USING THE “NODEMCU BOARD”

I have read this example where it tries to interact with the Ethereum blockchain via a micro-controller (ESP8266 and NODEMCU board). However, I do not understand if an Ethereum client (Geth or Parity) ...
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1answer
49 views

Updated: How to interact “directly” with smart contract via a micro-controller?

Assume we have a micro-controller and it collects a meta-data (ex. a payload as a string). How this micro-controller can interact "directly" with smart contract to write this data to the blockchain? ...
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0answers
33 views

Is “EthArmbian” an OS for running Ethereum client on “micro-processors”?

Is "EthArmbian" an OS for running Ethereum light client on "micro-processors" or "micro-controllers" ? And if yes, which micro-processors ?
2
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3answers
56 views

What kind of micro-processor / micro-controller are able to run Blockchain light client?

Is there any kind of micro-processor / micro-controller that can run Blockchain light client? An example can be Samsung ARTIK: https://www.artik.io However, it's too big. Is there any other similar ...
3
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0answers
53 views

Storing Private Keys in IoT Devices

In a network of IoT devices like internet-connected Raspberry Pis which sends transactions to the Ethereum blockchain, the Pis need to be able to access their own Ethereum private keys in order to ...
2
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1answer
225 views

Making micropayments possible

I think it's clear that the current ethereum network is not quite suitable for IoT based micro payments. And the slow transition toward PoS, which recently started, will put even more emphasis on gas ...
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2answers
44 views

Write contract data for others to get reward

I want to design a business model that includes: An IoT device, it has a address and signed data to write into smart contract, but it cannot directly connect to the ethereum network, and also its ...
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1answer
449 views

How to write oracle and put sensor data to blockchain? [closed]

I havea project in which I need to send the readings from the sensor connected to RPi to blockchain. Due to the fact that smart contract cannot manipulate data outside blockchain I need an oracle that ...
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1answer
70 views

Decentralized Data Storage for IoT using Sia

For my Master research I want to make a proof-of-concept of decentralized data storage for an IoT scenario. My idea is to receive measurement values from a raspberry pi and to store them using sia. I ...
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1answer
187 views

What is the rpc IP address?

I've only begun with blockchain(rinkeby-testnet) and IOT. I use nodemcu (ARDUINO IDE) and mist. What should the rpc-ip address be? Do I have to establish an ethereum node in order to do that ?
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2answers
2k views

How to write a smart contract for RPi sensor?

I have a PC with two nodes running on it, and a Raspberry Pi which also has Geth running. Problem is how to write a smart contract so that sensor to send the measurements to the blockchain ...
7
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1answer
2k views

Sign raw transaction offline with C++ on arduino

I'm exploring the IoT side of the EVM. I've programmed Arduinos and ESP8266s to interact with a Geth JSON RPC. I'm trying to be minimalistic and avoid NodeJS on the Geth JSON server side. Currently ...
4
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1answer
135 views

Ethereum usability in IoT

Curently minimal transaction cost is around 0.1$. And it's VERY high for most of IoT applications, where service price is less than 0,1$. Is there any solutions, works, startups anything about it?
4
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2answers
516 views

Sign transaction on ARM microcontroller

Is it possible to sign transaction on ARM Microcontroller and then somehow broadcast it? I have read about ethereumjs-tx, but how to implement it without any OS on board? UDPADE: I have found how to ...
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1answer
153 views

How can smart lock inform Contract that it has been locked?

Suppose Smart lock (SL) has an Internet connection. How can SL send message to Smart Contract when User close SL? How to protect from reply attack? Is there any gas effective way to check SL ...
4
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1answer
1k views

Is it possible to develop IoT auth system based on smart contracts?

Is it possible to develop IoT auth system based on smart contracts? (and how it have to work) And what will be pros and cons against another systems? Could someone explain this?
6
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1answer
245 views

How to implement Ethereum protocol to some tinyOS, e.g, contiki?

I find out Ethereum has many implements to many OS with many different languages. But i don't know if I want to use ethereum as protocol on contiki OS or cooja simulation, so what is the best choice ...
4
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0answers
360 views

Big Data/IoT projects on Ethereum [closed]

Can you provide names of Big Data or IoT projects (other than Slock.it) currently running on Ethereum? I'm especially interested in how Big Data could use it or whether a combination of IPFS and ...
8
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3answers
1k views

Smart contracts and IoT: how will they call the physical world?

Ethereum and IoT: if smart contracts cannot contact the "outside world", how will they trigger car unlocks and other things with the "smart" property? An AirBnB example: a smart contract between two ...
8
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2answers
2k views

Will Ethereum be the Internet 2.0?

I've been following Ethereum since it was announced and I remember that the appeal was that it was "Bitcoin 2.0". While email replaced the post and Bitcoin replaced fiat, Ethereum would replace legal ...