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As suggested here, log out of your metamask, switch your network to localhost 8545 (this option is already available) and then sign in using your ganache's mnemonic.


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This might work: MetaMask settings -> Advanced -> Reset Account.


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You don't get a transaction hash because there is no transaction. If estimateGas reverts, then the actual transaction should revert as well. I don't know of a way to debug estimateGas calls, but you may want to set the properties for estimateGas the same as you will when you actually send the transaction (e.g. set the gas price and from address to what they ...


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You can use rinkeby or gorlier poa testnet, if it’s not fast enough you can run your own testnet with small block time, say, 1-2 seconds


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You can use geth and set up private ethereum blockchain and get fast transactions as you mentioned and make quick RPC calls. Hope this will help you.


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Account won't be persistent when you rerun the ganache-cli


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You are getting the error because both the applications cannot use the same port. You have to kill the cli process to use the Ganache GUI in the same port. But this would mean you will loose the data in the cli node. Using the same seed phrase just means that you are unlocking the same 10 accounts in both the cases. The blockchains are different. you can ...


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So this issue was coming up because after adding my accounts to metamask I had to make migrations with truffle migrate and I did not do that. So that was the reason why Metamask had problems connecting to Ganache. New here! So suggestions are welcome! Thanks.


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I would go for the Arduino and here is why: The Arduino is "easier" to connect to sensors or electronic components which will work great in the IoT environment. Arduino's work great for projects in which one must quickly obtain data from sensors and perform an activity from it. I assume an external oracle, such as the Arduino, will input this data into the ...


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