How to make a Hologram in Blender in 15 minutes | Summary and Q&A

TL;DR

Learn how to create a 3D hologram using Blender's free open source software, complete with customizable shapes and text.

Key Insights

• 🎥 Creating a procedural hologram using Blender's free open-source software, with the focus on creating volumetric pixels and a grid with subdivision controls to determine the hologram's resolution.
• 🧩 Using the mesh line and instance on points functions to create an array modifier in geometry nodes, allowing for the easy control of the number of pixels in the hologram.
• 📐 Setting the real-world scale of the hologram, with the example of a portable hologram measuring 20x20 centimeters, and adjusting the gap between pixels for better resolution.
• 🔳 Using a mesh to points node to select which pixels appear on the hologram by setting a threshold value with the geometry proximity node.
• 💡 Adding a light beam to simulate a realistic projection source, with curves and mesh conversion through curve to mesh and set material nodes.
• 💻 Optimizing the hologram's appearance and performance by adjusting the size and resolution of pixels, as well as the threshold for pixel appearance outside the donut object.
• 💫 Enhancing the hologram's visual effects by using emission and transparency shaders, creating a mix between emission and transparency with a mix shader.
• 🌌 Additional options for making the hologram more visually appealing, such as adding a floor, a surrounding lamp, and a wireframe cage for a futuristic aesthetic.

Transcript

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Questions & Answers

Q: How can you create a 3D hologram using Blender?

To create a 3D hologram, start by creating a grid and using an array modifier to make it larger. Then, add instances of a plane to create pixels and use geometry nodes to manipulate them.

Q: How can you adjust the resolution of the hologram in Blender?

You can adjust the resolution of the hologram by changing the number of vertices or the count of the grid and adjusting the size of the icospheres used as pixels.

Q: Can you make the hologram pixels appear only on certain objects?

Yes, you can use mesh-to-point nodes and selection inputs to specify which pixels should appear based on the proximity of an object.

Q: How can you make the hologram pixels glow in Blender?

To make the pixels glow, change the material's surface to emission and enable bloom in the render properties. Assign the material to the icospheres used as pixels.

Q: Is it possible to add light beams to the hologram in Blender?

Yes, you can add light beams to the hologram by using additional instance on point nodes and creating curves that match the position of the pixels. Convert the curves to meshes and give them a material with emission and transparency.

Summary & Key Takeaways

• Start by creating a grid and using an array modifier to make it larger.

• Add instances of a plane to create pixels, and use geometry nodes to manipulate them.

• Use mesh-to-point nodes to select specific pixels and create a holographic effect.