Author Archives: dmitriano

Ethereum Classic (ETC) stopped mining on GeForce GTX 3GB cards

Today I noticed that ETC does not mine anymore on my HiveOS farm with GeForce GTX 3GB cards:

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Binance looses its orders

When I query KAVAUSDT order #561657676 with /api/v3/order?symbol=KAVAUSDT&orderId=561657676&timestamp={{timestamp}}&signature={{signature}} that normally should return

{
    "symbol": "KAVAUSDT",
    "orderId": 561657676,
    "orderListId": -1,
    "clientOrderId": "ce86e0a9-85a8-4d9b-99b1-b08e227e2464",
    "price": "4.80700000",
    "origQty": "10.00000000",
    "executedQty": "0.00000000",
    "cummulativeQuoteQty": "0.00000000",
    "status": "CANCELED",
    "timeInForce": "GTC",
    "type": "LIMIT",
    "side": "BUY",
    "stopPrice": "0.00000000",
    "icebergQty": "0.00000000",
    "time": 1632183933417,
    "updateTime": 1632184233620,
    "isWorking": true,
    "origQuoteOrderQty": "0.00000000"
}

I periodically get

{
    "code": -2013,
    "msg": "Order does not exist."
}

see a video on YouTube that demonstrates this effect.

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An example of real-time TableView in QML

Looks like CheckBox-es respond to clicks and work correctly even if they are in a TableView that is updated once a second:

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How I fixed “No such file” error in Visual Studio Code on Windows 10

Found an answer on stackoverflow.com:

and updated c:\Users\D-Ef\.vscode\extensions\liximomo.sftp-1.12.9\node_modules\ssh2-streams\lib\sftp.js on my machine:

  // For backwards compat do not emit close on destroy.
  options.emitClose = false;
  options.autoDestroy = false;
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Building QT 6.2.2 for iOS

I built QT 6.2.2. for MacOS first and then configured QT 6.2.2 for iOS as follows:

./configure -c++std c++20 -opensource -confirm-license -no-openssl -securetransport -DQT_NO_EXCEPTIONS=1 \
  -platform macx-ios-clang -release -qt-host-path /usr/local/Qt-6.2.2 -prefix /usr/local/Qt-6.2.2-ios \
  -skip qt3d -skip qt5compat -skip qtactiveqt -skip qtcharts -skip qtcoap -skip qtconnectivity \
  -skip qtdatavis3d -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtnetworkauth -skip qtopcua \
  -skip qtserialport -skip qtpositioning -skip qtquicktimeline -skip qtquick3d -skip qtremoteobjects \
  -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtvirtualkeyboard -skip qtwayland \
  -skip qtwebchannel -skip qtwebengine -skip qtwebview
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Building QT 6.2.2 for MacOS – Part 2

In my previous post I described my first attempt to built QT 6.2.2 for MacOS. Probably my mistake was that I did not switch to full XCode with the command:

sudo xcode-select -s /Applications/Xcode.app/Contents/Developer

and that I used the configuration script with a wrong syntax and missed -- in the command line. Probably the following configuration can be a step to a right direction:

./configure -c++std c++20 -opensource -confirm-license -no-openssl -securetransport -DQT_NO_EXCEPTIONS=1 \
  -skip qt3d -skip qt5compat -skip qtactiveqt -skip qtcharts -skip qtcoap -skip qtconnectivity \
  -skip qtdatavis3d -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtnetworkauth -skip qtopcua \
  -skip qtserialport -skip qtpositioning -skip qtquicktimeline -skip qtquick3d -skip qtremoteobjects \
  -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtvirtualkeyboard -skip qtwayland \
  -skip qtwebchannel -skip qtwebengine -skip qtwebview \
  -- -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64"
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Running an app with QT 6.2.2 on MacOS

Built QT 6.2.2 and installed QT Creator 6.0.1, it started but with the following errors:

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Building QT 6.2.2 for MacOS – Part 1

Installed XCode 13:

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Backing up with Time Machine on MacOS

Plugged an external HDD:

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How to mine Ethereum on Windows 10 laptop

Determine local IP address by typing ipconfig in Command Prompt:

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