$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Arduino IDE on Gnu/Linux Distros

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And the Arduino Integrated Development Environment for Linux contains a Text Editor for Writing Code, a Message Area, a Text Console, a Toolbar with Buttons for Common Functions and a Series of Menus.

Finally, it Connects to the Arduino and Genuino Hardware to Upload Programs and Communicate with them.

How to Install Arduino IDE on Gnu/Linux Distros

GNU/Linux Arduino Desktop IDE Installation Guide