diff --git a/Cargo.lock b/Cargo.lock
index d1792a3..5972d2b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -512,6 +512,12 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "byteorder-lite"
 version = "0.1.0"
@@ -772,6 +778,18 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "core-text"
+version = "20.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9d2790b5c08465d49f8dc05c8bcae9fea467855947db39b0f8145c091aaced5"
+dependencies = [
+ "core-foundation",
+ "core-graphics",
+ "foreign-types",
+ "libc",
+]
+
 [[package]]
 name = "core_maths"
 version = "0.1.1"
@@ -884,6 +902,7 @@ dependencies = [
  "dotenvy",
  "hass-rs",
  "paste",
+ "plotters",
  "serde",
  "serde_json",
  "slint",
@@ -957,6 +976,27 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dirs"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -1060,6 +1100,18 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edf234dd1594d6dd434a8fb8cada51ddbbc593e40e4a01556a0b31c62da2775b"
 
+[[package]]
+name = "dwrote"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b35532432acc8b19ceed096e35dfa088d3ea037fe4f3c085f1f97f33b4d02"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "winapi",
+ "wio",
+]
+
 [[package]]
 name = "either"
 version = "1.17.0"
@@ -1267,12 +1319,43 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "98de4bbd547a563b716d8dfa9aad1cb19bfab00f4fa09a6a4ed21dbcf44ce9c4"
 
+[[package]]
+name = "float-ord"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ce81f49ae8a0482e4c55ea62ebbd7e5a686af544c00b9d090bba3ff9be97b3d"
+
 [[package]]
 name = "foldhash"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
 
+[[package]]
+name = "font-kit"
+version = "0.14.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c7e611d49285d4c4b2e1727b72cf05353558885cc5252f93707b845dfcaf3d3"
+dependencies = [
+ "bitflags 2.13.1",
+ "byteorder",
+ "core-foundation",
+ "core-graphics",
+ "core-text",
+ "dirs",
+ "dwrote",
+ "float-ord",
+ "freetype-sys",
+ "lazy_static",
+ "libc",
+ "log",
+ "pathfinder_geometry",
+ "pathfinder_simd",
+ "walkdir",
+ "winapi",
+ "yeslogic-fontconfig-sys",
+]
+
 [[package]]
 name = "font-types"
 version = "0.11.3"
@@ -1300,7 +1383,7 @@ dependencies = [
  "log",
  "slotmap",
  "tinyvec",
- "ttf-parser",
+ "ttf-parser 0.25.1",
 ]
 
 [[package]]
@@ -1361,6 +1444,17 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "freetype-sys"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e7edc5b9669349acfda99533e9e0bcf26a51862ab43b08ee7745c55d28eb134"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "funty"
 version = "2.0.0"
@@ -1531,6 +1625,16 @@ dependencies = [
  "r-efi 6.0.0",
 ]
 
+[[package]]
+name = "gif"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80792593675e051cf94a4b111980da2ba60d4a83e43e0048c5693baab3977045"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
 [[package]]
 name = "gif"
 version = "0.14.2"
@@ -1873,7 +1977,7 @@ dependencies = [
  "derive_more",
  "i-slint-common",
  "icu_normalizer",
- "image",
+ "image 0.25.10",
  "itertools 0.14.0",
  "linked_hash_set",
  "lyon_extra",
@@ -1911,7 +2015,7 @@ dependencies = [
  "i-slint-common",
  "i-slint-core-macros",
  "icu_normalizer",
- "image",
+ "image 0.25.10",
  "lyon_algorithms",
  "lyon_extra",
  "lyon_geom",
@@ -2227,6 +2331,20 @@ dependencies = [
  "icu_properties",
 ]
 
+[[package]]
+name = "image"
+version = "0.24.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5690139d2f55868e080017335e4b94cb7414274c74f1669c84fb5feba2c9f69d"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "jpeg-decoder",
+ "num-traits",
+ "png 0.17.16",
+]
+
 [[package]]
 name = "image"
 version = "0.25.10"
@@ -2237,11 +2355,11 @@ dependencies = [
  "byteorder-lite",
  "color_quant",
  "exr",
- "gif",
+ "gif 0.14.2",
  "image-webp",
  "moxcms",
  "num-traits",
- "png",
+ "png 0.18.1",
  "qoi",
  "ravif",
  "rayon",
@@ -2425,6 +2543,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "jpeg-decoder"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00810f1d8b74be64b13dbf3db89ac67740615d6c891f0e7b6179326533011a07"
+
 [[package]]
 name = "js-sys"
 version = "0.3.103"
@@ -2732,7 +2856,7 @@ dependencies = [
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
  "once_cell",
- "png",
+ "png 0.18.1",
  "thiserror 2.0.20",
  "windows-sys 0.61.2",
 ]
@@ -3311,6 +3435,12 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "orbclient"
 version = "0.3.55"
@@ -3405,6 +3535,25 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35fb2e5f958ec131621fdd531e9fc186ed768cbe395337403ae56c17a74c68ec"
 
+[[package]]
+name = "pathfinder_geometry"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b7e7b4ea703700ce73ebf128e1450eb69c3a8329199ffbfb9b2a0418e5ad3"
+dependencies = [
+ "log",
+ "pathfinder_simd",
+]
+
+[[package]]
+name = "pathfinder_simd"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4500030c302e4af1d423f36f3b958d1aecb6c04184356ed5a833bf6b60435777"
+dependencies = [
+ "rustc_version",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -3478,6 +3627,65 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
+[[package]]
+name = "plotters"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aeb6f403d7a4911efb1e33402027fc44f29b5bf6def3effcc22d7bb75f2b747"
+dependencies = [
+ "chrono",
+ "font-kit",
+ "image 0.24.9",
+ "lazy_static",
+ "num-traits",
+ "pathfinder_geometry",
+ "plotters-backend",
+ "plotters-bitmap",
+ "plotters-svg",
+ "ttf-parser 0.20.0",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "plotters-backend"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df42e13c12958a16b3f7f4386b9ab1f3e7933914ecea48da7139435263a4172a"
+
+[[package]]
+name = "plotters-bitmap"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72ce181e3f6bf82d6c1dc569103ca7b1bd964c60ba03d7e6cdfbb3e3eb7f7405"
+dependencies = [
+ "gif 0.12.0",
+ "image 0.24.9",
+ "plotters-backend",
+]
+
+[[package]]
+name = "plotters-svg"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51bae2ac328883f7acdfea3d66a7c35751187f870bc81f94563733a154d7a670"
+dependencies = [
+ "plotters-backend",
+]
+
+[[package]]
+name = "png"
+version = "0.17.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82151a2fc869e011c153adc57cf2789ccb8d9906ce52c0b39a6b5697749d7526"
+dependencies = [
+ "bitflags 1.3.2",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "png"
 version = "0.18.1"
@@ -3867,6 +4075,17 @@ dependencies = [
  "bitflags 2.13.1",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
+dependencies = [
+ "getrandom 0.2.17",
+ "libredox",
+ "thiserror 2.0.20",
+]
+
 [[package]]
 name = "regex"
 version = "1.13.1"
@@ -3902,7 +4121,7 @@ version = "0.47.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9be183ad6a216aa96f33e4c8033b0988b8b3ea6fd2359d19af5bac4643fd8e81"
 dependencies = [
- "gif",
+ "gif 0.14.2",
  "image-webp",
  "log",
  "pico-args",
@@ -4069,7 +4288,7 @@ dependencies = [
  "core_maths",
  "log",
  "smallvec",
- "ttf-parser",
+ "ttf-parser 0.25.1",
  "unicode-bidi-mirroring",
  "unicode-ccc",
  "unicode-properties",
@@ -4698,7 +4917,7 @@ dependencies = [
  "bytemuck",
  "cfg-if",
  "log",
- "png",
+ "png 0.18.1",
  "tiny-skia-path",
 ]
 
@@ -4885,6 +5104,12 @@ dependencies = [
  "slint",
 ]
 
+[[package]]
+name = "ttf-parser"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17f77d76d837a7830fe1d4f12b7b4ba4192c1888001c7164257e4bc6d21d96b4"
+
 [[package]]
 name = "ttf-parser"
 version = "0.25.1"
@@ -5097,7 +5322,7 @@ dependencies = [
  "strict-num",
  "svgtypes",
  "tiny-skia-path",
- "ttf-parser",
+ "ttf-parser 0.25.1",
  "unicode-bidi",
  "unicode-script",
  "unicode-vo",
@@ -5298,6 +5523,22 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a28ac98ddc8b9274cb41bb4d9d4d5c425b6020c50c46f25559911905610b4a88"
 
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
@@ -5307,6 +5548,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows"
 version = "0.62.2"
@@ -5627,6 +5874,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "wio"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d129932f4644ac2396cb456385cbf9e63b5b30c6e8dc4820bdca4eb082037a5"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "wit-bindgen"
 version = "0.57.1"
diff --git a/dashboard/Cargo.toml b/dashboard/Cargo.toml
index 7326ae7..6fe27c7 100644
--- a/dashboard/Cargo.toml
+++ b/dashboard/Cargo.toml
@@ -16,6 +16,7 @@ thiserror = "2.0.20"
 paste = "1.0.15"
 ureq = { version = "3.4.0", default-features = false, features = ["json", "rustls"] }
 serde = { version = "1.0.229", features = ["derive"] }
+plotters = "0.3.7"
 
 [features]
 dev = ["slint/backend-winit-x11"]
diff --git a/dashboard/src/main.rs b/dashboard/src/main.rs
index 566c879..ccd5a64 100644
--- a/dashboard/src/main.rs
+++ b/dashboard/src/main.rs
@@ -6,7 +6,9 @@ mod ui;
 
 use tokio::sync::mpsc::unbounded_channel;
 
+use plotters::prelude::*;
 use slint::ComponentHandle;
+use slint::SharedPixelBuffer;
 
 use crate::{
     error::AppError,
@@ -22,6 +24,8 @@ async fn main() -> Result<(), AppError> {
 
     let app = ui::AppWindow::new()?;
 
+    app.on_render_plot(|iteration| render_plot(iteration).unwrap());
+
     let (c2s_tx, c2s_rx) = unbounded_channel::<CommandMessage>();
     let (s2c_tx, s2c_rx) = unbounded_channel::<EventMessage>();
 
@@ -35,3 +39,63 @@ async fn main() -> Result<(), AppError> {
 
     app.run().map_err(Into::into)
 }
+
+fn render_plot(i: i32) -> Result<slint::Image, Box<dyn std::error::Error>> {
+    let mut pixel_buffer = SharedPixelBuffer::new(640, 480);
+    let size = (pixel_buffer.width(), pixel_buffer.height());
+
+    let backend = BitMapBackend::with_buffer(pixel_buffer.make_mut_bytes(), size);
+    let root = backend.into_drawing_area();
+
+    root.fill(&WHITE)?;
+
+    let mut chart = ChartBuilder::on(&root)
+        .caption(
+            format!("Koch's Snowflake (n_iter = {})", i),
+            ("sans-serif", 50),
+        )
+        .build_cartesian_2d(-2.0..2.0, -1.5..1.5)?;
+
+    let mut snowflake_vertices = {
+        let mut current: Vec<(f64, f64)> = vec![
+            (0.0, 1.0),
+            ((3.0f64).sqrt() / 2.0, -0.5),
+            (-(3.0f64).sqrt() / 2.0, -0.5),
+        ];
+        for _ in 0..i {
+            current = snowflake_iter(&current[..]);
+        }
+        current
+    };
+
+    chart.draw_series(std::iter::once(Polygon::new(
+        snowflake_vertices.clone(),
+        RED.mix(0.2),
+    )))?;
+
+    snowflake_vertices.push(snowflake_vertices[0]);
+    chart.draw_series(std::iter::once(PathElement::new(snowflake_vertices, RED)))?;
+
+    root.present()?;
+    drop(chart);
+    drop(root);
+
+    Ok(slint::Image::from_rgb8(pixel_buffer))
+}
+
+fn snowflake_iter(points: &[(f64, f64)]) -> Vec<(f64, f64)> {
+    let mut ret = vec![];
+    for i in 0..points.len() {
+        let (start, end) = (points[i], points[(i + 1) % points.len()]);
+        let t = ((end.0 - start.0) / 3.0, (end.1 - start.1) / 3.0);
+        let s = (
+            t.0 * 0.5 - t.1 * (0.75f64).sqrt(),
+            t.1 * 0.5 + (0.75f64).sqrt() * t.0,
+        );
+        ret.push(start);
+        ret.push((start.0 + t.0, start.1 + t.1));
+        ret.push((start.0 + t.0 + s.0, start.1 + t.1 + s.1));
+        ret.push((start.0 + t.0 * 2.0, start.1 + t.1 * 2.0));
+    }
+    ret
+}
diff --git a/dashboard/ui/energy.slint b/dashboard/ui/energy.slint
index 6c5a6ae..2acbb26 100644
--- a/dashboard/ui/energy.slint
+++ b/dashboard/ui/energy.slint
@@ -1,3 +1,23 @@
+
+import { Horizontal, Slider, Vertical } from "material/material.slint";
 export component Energy inherits Rectangle {
-    // ..
+
+    in-out property <float> pitch: 0.15;
+    in-out property <float> yaw: 0.5;
+
+    pure callback render_plot(int) -> image;
+
+    Vertical {
+        Image {
+            source: root.render_plot(amplitude-slider.value);
+        }
+
+        Horizontal {
+            amplitude-slider := Slider {
+                minimum: 0;
+                maximum: 10;
+                value: 0;
+            }
+        }
+    }
 }
diff --git a/dashboard/ui/main.slint b/dashboard/ui/main.slint
index 7f5c38e..57eea9e 100644
--- a/dashboard/ui/main.slint
+++ b/dashboard/ui/main.slint
@@ -125,6 +125,8 @@ export component AppWindow inherits Window {
     height: 600px;
     default-font-size: 16px;
 
+    pure callback render_plot(int) -> image;
+
     in-out property <ColorScheme> color-scheme <=> Palette.color-scheme;
 
     in property <DateTimeData> date-time;
@@ -195,7 +197,9 @@ export component AppWindow inherits Window {
                         calendar-events: calendar-events;
                     }
 
-                    if tab-bar.current-index == 2: Energy { }
+                    if tab-bar.current-index == 2: Energy {
+                        render-plot(iteration) => render-plot(iteration);
+                    }
 
                     Rectangle {
                         tab-bar := TabBar {