Sometimes, you may receive a message in the Arduino IDE output that the serial port is unavailable. This could happen if you forget to plug your Maker to your computer.
In case you have already plugged in, but you still receive the same message, try the following steps:
- From Ardublockly Edit menu, go to Preferences. This will open the settings window.
- Check that the compiler and sketch locations are in the same directory as shown. When you install Ardublockly, these locations are chosen by default.
- Check that the selected Arduino board is Leonardo and that it is connected to a COM port. The COM port number may be different on your computer.
Once all these setting are in place, your Maker is ready to be programmed.