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Introduction
In this episode, we'll learn 3 basic things used in every Dynamo grab: node, cable, and code block. The final result is like what you see: numbers, text, lists, and calculated sequences. Let's start! Hello! In this second episode, we'll get to know node, cable, and code block. All three are the basic elements of every Dynamo grab, so understand them well. Open Dynamo from the manage tab in Revit, then click launch Dynamo.
Step 1: Open Dynamo from the Manage tab in Revit
Wait until the window opens.
Step 2: Create a new workspace with the New button
On the initial page, click new to create an empty workspace.
Step 3: Node, input port, and output port - Math.Max
A node is a small city that performs one task. We'll create two code blocks containing the number 10 and 5. Then right-click on the canvas, search for node mat.max, which selects the largest number, and press enter. Nodes have input ports on the left and output ports on the right. Cables connect the output of one node to the input of another node. Click the output port, then click the input port. Connect both numbers to mat.max, which selects the largest number, then connect the output to watch. The result is 10, the largest number of the two.
Step 4: Code Block text - write between quotes
Code blocks can also store text. Double-click on the canvas, then type text between quotation marks and end with a semicolon. We'll connect it to watch, and the text 'Hello Dynamo' appears. To create a list, use square brackets and separate the contents with commas.
Step 5: Code Block list - brackets and commas
The list 10, 20, 30 appears in watch complete with numbering, starting from 0. Two dots mean a sequence.
Step 6: Number sequence with two dots -1..5
One dot-dotted 5 produces numbers from 1 to 5. This is the fastest way to create a sequential number list.
Step 7: Sequence with step - 0..20,.5
If you want to jump, add the number of steps. 0 points 20 points 5 produces 0, 5, 10, 15, and 20.
Step 8: Multiple lines, variables, and comments
A code block can have many lines. We create variable A containing 4, variable B containing 6, and the last line swaps both. The two forward slashes are comments, which are not counted. The result is 24.
Done! You have learned node, cables, and Code Block
Done. You now know about nodes, cables, and code blocks. In the next episode, we start selecting Revit elements. Goodbye. Want to master Dynamo and Revit? Cerdas Inovasi Digital offers Revit and Dynamo courses, BIM modeling services and Dynamo script creation, as well as selling project files and grab Dynamo from this tutorial series. Contact us via WhatsApp, or visit cerdasinovasidigital.com Goodbye in the next episode. Goodbye. Thank you. Goodbye.
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Cerdas Inovasi Digital Team
Software developers, BIM & 3D engineers, and AI practitioners
52 video classes1,276 episodes
We build software, BIM models, games and AI automations for clients every day, and turn that hands-on work into step-by-step classes: every step is shown on screen and comes with a PDF guide you can keep.
