Arduino IDE

Download the latest Arduino IDE here. Choose the right installer for your operating system and install the software.

Arduino Hardware Package

In order to program your Morse Code LED Blinker, an additional board package must be installed to support the utilized microcontroller. Open the Arduino IDE, go to File and click on Preferences. In the Tab Settings, add the following URL to the section “Additional boards manager URLs”:

https://mcudude.github.io/MicroCore/package_MCUdude_MicroCore_index.json

After saving your changes, open the Board Manager and search for “MicroCore” in the search bar. Install the lastest version of the package.

Programming Settings

Make sure to adjust the following settings under Tools before flashing your Morse Code LED Blinker:

Option	Value
BOD	BOD disabled
Bootloader	No bootloader
Clock	9.6Mhz internal osc.
EEPROM	EEPROM retained

C++ Code

Copy and paste the following code into the Arduino IDE. Navigate to the predefined string (“HELLO WORLD” by default) and edit it to your likings.