diff --git a/content/blog/2025/matrixportal-metaballs/index.md b/content/blog/2025/matrixportal-metaballs/index.md
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+---
+title: "MatrixPortal Metaballs"
+date: 2025-08-16T17:13:46-07:00
+tags:
+    - Hardware
+    - Arduino
+    - AdaFruit
+    - Metaballs
+    - Electronics
+---
+
+<figure class="figure figure--video">
+    <video controls width="100%">
+        <source src="metaballs.mov" type="video/mp4">
+    </video>
+</figure>
+
+I've had this [MatrixPortal M4][m4] from AdaFruit for a little while now. It's a
+fun little bit of hardware. Easy to hack on with the Arduino IDE. AdaFruit have
+published a bunchh of useful libraries for doing fun things with LED matrix
+displays. Here it is running a metaballs simulation on a 64&times;64 matrix
+display.
+
+[m4]: https://learn.adafruit.com/adafruit-matrixportal-m4
diff --git a/content/blog/2025/matrixportal-metaballs/metaballs.mov b/content/blog/2025/matrixportal-metaballs/metaballs.mov
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+version https://git-lfs.github.com/spec/v1
+oid sha256:d7264c2a1ba2c8f363ebd965754f6f8d443150e240826189879aea27ae86ad38
+size 30663699