xod/docs/tutorial/08-constants/README.md

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Constant Nodes

#08. Constant Nodes

Note This is a web-version of a tutorial chapter embedded right into the XOD IDE. To get a better learning experience we recommend to install the desktop IDE or start the browser-based IDE, and you’ll see the same tutorial there.

You can specify pin values manually with the Inspector. However, the data can be transferred from the output pin of one node to the input pin of another node. This is the core idea of XOD programming.

The simplest source of output values is a constant node. Its output value never changes during the program execution. Although, while programming you can set its value as usual, with the Inspector.

Test circuit

Note The circuit is the same as for the previous lesson.

↓ Download as a Fritzing project

How-to

1. Find the constant-number node under xod/core and add it to the patch.
2. Connect its VAL output pin with an input of another node. To do this, simply click on the VAL pin and then on the destination pin. You will then see a green line connecting the two pins. This line is called a link.
3. Set a desired constant value via Inspector.

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