diff --git a/rust/pm-grid/src/fonts.rs b/rust/pm-grid/src/fonts.rs
new file mode 100644
index 0000000..8e44dfa
--- /dev/null
+++ b/rust/pm-grid/src/fonts.rs
@@ -0,0 +1,78 @@
+//! 3x5 LED font (bit2 = leftmost column) — shared by the views, the scrolling name, and the splash.
+//! Same bit convention as pico-scroll/app.py: glyph row value's bit `(1 << (2 - col))` lights a column.
+use alloc::vec::Vec;
+
+pub const DIGITS: [[u8; 5]; 10] = [
+    [7, 5, 5, 5, 7], // 0
+    [2, 6, 2, 2, 7], // 1
+    [7, 1, 7, 4, 7], // 2
+    [7, 1, 7, 1, 7], // 3
+    [5, 5, 7, 1, 1], // 4
+    [7, 4, 7, 1, 7], // 5
+    [7, 4, 7, 5, 7], // 6
+    [7, 1, 2, 2, 2], // 7
+    [7, 5, 7, 5, 7], // 8
+    [7, 5, 7, 1, 7], // 9
+];
+
+/// Full 3x5 uppercase glyph for a character (used by the scrolling name + boot splash).
+/// Unknown characters render blank. Digits reuse `DIGITS`.
+fn glyph(c: char) -> [u8; 5] {
+    match c {
+        '0'..='9' => DIGITS[c as usize - '0' as usize],
+        'A' => [2, 5, 7, 5, 5],
+        'B' => [6, 5, 6, 5, 6],
+        'C' => [3, 4, 4, 4, 3],
+        'D' => [6, 5, 5, 5, 6],
+        'E' => [7, 4, 6, 4, 7],
+        'F' => [7, 4, 6, 4, 4],
+        'G' => [7, 4, 5, 5, 7],
+        'H' => [5, 5, 7, 5, 5],
+        'I' => [7, 2, 2, 2, 7],
+        'J' => [1, 1, 1, 5, 2],
+        'K' => [5, 6, 4, 6, 5],
+        'L' => [4, 4, 4, 4, 7],
+        'M' => [5, 7, 7, 5, 5],
+        'N' => [5, 7, 7, 7, 5],
+        'O' => [2, 5, 5, 5, 2],
+        'P' => [7, 5, 7, 4, 4],
+        'Q' => [2, 5, 5, 6, 3],
+        'R' => [7, 5, 7, 6, 5],
+        'S' => [3, 4, 2, 1, 6],
+        'T' => [7, 2, 2, 2, 2],
+        'U' => [5, 5, 5, 5, 7],
+        'V' => [5, 5, 5, 5, 2],
+        'W' => [5, 5, 7, 7, 5],
+        'X' => [5, 5, 2, 5, 5],
+        'Y' => [5, 5, 2, 2, 2],
+        'Z' => [7, 1, 2, 4, 7],
+        '-' => [0, 0, 7, 0, 0],
+        '/' => [1, 1, 2, 4, 4],
+        '(' => [1, 2, 2, 2, 1],
+        ')' => [4, 2, 2, 2, 4],
+        '.' => [0, 0, 0, 0, 2],
+        '+' => [0, 2, 7, 2, 0],
+        '&' => [2, 5, 2, 5, 3],
+        _ => [0, 0, 0, 0, 0], // space + anything unmapped
+    }
+}
+
+/// Render a string into a list of 5-bit column slices (3 columns per glyph + a 1px gap), for the
+/// horizontal scrollers (Ticker name + boot splash). Lowercase is folded to uppercase.
+pub fn build_name_cols(name: &str) -> Vec<u8> {
+    let mut cols = Vec::new();
+    for ch in name.chars() {
+        let g = glyph(ch.to_ascii_uppercase());
+        for c in 0..3 {
+            let mut col = 0u8;
+            for r in 0..5 {
+                if g[r] & (1 << (2 - c)) != 0 {
+                    col |= 1 << r;
+                }
+            }
+            cols.push(col);
+        }
+        cols.push(0); // 1px gap between glyphs
+    }
+    cols
+}
diff --git a/rust/pm-grid/src/main.rs b/rust/pm-grid/src/main.rs
index 151daf0..00cd947 100644
--- a/rust/pm-grid/src/main.rs
+++ b/rust/pm-grid/src/main.rs
@@ -19,6 +19,8 @@
 #![no_main]
 
 extern crate alloc;
+mod fonts;
+use fonts::{build_name_cols, DIGITS};
 use alloc::collections::VecDeque;
 use alloc::string::{String, ToString};
 use alloc::vec::Vec;
@@ -311,63 +313,6 @@ const APP_VERSION: &str = "0.1.0";
 const BRIGHTNESS: u8 = 160; // accent
 const NAME_BRIGHT: u8 = 120; // ticker name pixels
 
-// ============================== FONTS (3x5; bit2 = leftmost column) ==============================
-// Same bit convention as pico-scroll/app.py: glyph row value's bit (1<<(2-col)) lights that column.
-const DIGITS: [[u8; 5]; 10] = [
-    [7, 5, 5, 5, 7], // 0
-    [2, 6, 2, 2, 7], // 1
-    [7, 1, 7, 4, 7], // 2
-    [7, 1, 7, 1, 7], // 3
-    [5, 5, 7, 1, 1], // 4
-    [7, 4, 7, 1, 7], // 5
-    [7, 4, 7, 5, 7], // 6
-    [7, 1, 2, 2, 2], // 7
-    [7, 5, 7, 5, 7], // 8
-    [7, 5, 7, 1, 7], // 9
-];
-
-/// Full 3x5 uppercase glyph for a character (used by the scrolling name + boot splash).
-/// Unknown characters render blank. Digits reuse `DIGITS`.
-fn glyph(c: char) -> [u8; 5] {
-    match c {
-        '0'..='9' => DIGITS[c as usize - '0' as usize],
-        'A' => [2, 5, 7, 5, 5],
-        'B' => [6, 5, 6, 5, 6],
-        'C' => [3, 4, 4, 4, 3],
-        'D' => [6, 5, 5, 5, 6],
-        'E' => [7, 4, 6, 4, 7],
-        'F' => [7, 4, 6, 4, 4],
-        'G' => [7, 4, 5, 5, 7],
-        'H' => [5, 5, 7, 5, 5],
-        'I' => [7, 2, 2, 2, 7],
-        'J' => [1, 1, 1, 5, 2],
-        'K' => [5, 6, 4, 6, 5],
-        'L' => [4, 4, 4, 4, 7],
-        'M' => [5, 7, 7, 5, 5],
-        'N' => [5, 7, 7, 7, 5],
-        'O' => [2, 5, 5, 5, 2],
-        'P' => [7, 5, 7, 4, 4],
-        'Q' => [2, 5, 5, 6, 3],
-        'R' => [7, 5, 7, 6, 5],
-        'S' => [3, 4, 2, 1, 6],
-        'T' => [7, 2, 2, 2, 2],
-        'U' => [5, 5, 5, 5, 7],
-        'V' => [5, 5, 5, 5, 2],
-        'W' => [5, 5, 7, 7, 5],
-        'X' => [5, 5, 2, 5, 5],
-        'Y' => [5, 5, 2, 2, 2],
-        'Z' => [7, 1, 2, 4, 7],
-        '-' => [0, 0, 7, 0, 0],
-        '/' => [1, 1, 2, 4, 4],
-        '(' => [1, 2, 2, 2, 1],
-        ')' => [4, 2, 2, 2, 4],
-        '.' => [0, 0, 0, 0, 2],
-        '+' => [0, 2, 7, 2, 0],
-        '&' => [2, 5, 2, 5, 3],
-        _ => [0, 0, 0, 0, 0], // space + anything unmapped
-    }
-}
-
 // ============================== IS31FL3731 DRIVER (bulk framebuffer) ==============================
 // Faithful port of pico-scroll/app.py's `Matrix`: keep a 144-byte PWM framebuffer and push the
 // WHOLE thing in one I2C block write per frame (per-pixel I2C is far too slow to animate). The
@@ -559,24 +504,6 @@ fn master_bar_ns(track: &track_format::Track, tempo: i64) -> i64 {
     beat * beats.max(1)
 }
 
-fn build_name_cols(name: &str) -> Vec<u8> {
-    let mut cols = Vec::new();
-    for ch in name.chars() {
-        let g = glyph(ch.to_ascii_uppercase());
-        for c in 0..3 {
-            let mut col = 0u8;
-            for r in 0..5 {
-                if g[r] & (1 << (2 - c)) != 0 {
-                    col |= 1 << r;
-                }
-            }
-            cols.push(col);
-        }
-        cols.push(0); // 1px gap between glyphs
-    }
-    cols
-}
-
 const SCROLL_GAP: i32 = 13; // blank columns between repeats (>= name region width) for a clean loop
 
 impl App {