diff --git a/hello_gradient/.cargo/config b/hello_gradient/.cargo/config
new file mode 100644
index 0000000..0102016
--- /dev/null
+++ b/hello_gradient/.cargo/config
@@ -0,0 +1,20 @@
+[build]
+target = "thumbv6m-none-eabi"
+
+[target.thumbv6m-none-eabi]
+runner = 'arm-none-eabi-gdb'
+rustflags = [
+  # LLD (shipped with the Rust toolchain) is used as the default linker
+  "-C", "link-arg=-Tlink.x",
+
+  # if you run into problems with LLD switch to the GNU linker by commenting out
+  # this line
+  # "-C", "linker=arm-none-eabi-ld",
+
+  # if you need to link to pre-compiled C libraries provided by a C toolchain
+  # use GCC as the linker by commenting out both lines above and then
+  # uncommenting the three lines below
+  # "-C", "linker=arm-none-eabi-gcc",
+  # "-C", "link-arg=-Wl,-Tlink.x",
+  # "-C", "link-arg=-nostartfiles",
+]
diff --git a/hello_gradient/Cargo.lock b/hello_gradient/Cargo.lock
new file mode 100644
index 0000000..5c7366e
--- /dev/null
+++ b/hello_gradient/Cargo.lock
@@ -0,0 +1,286 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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diff --git a/hello_gradient/Cargo.toml b/hello_gradient/Cargo.toml
new file mode 100644
index 0000000..3210e8f
--- /dev/null
+++ b/hello_gradient/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "hello_gradient"
+version = "0.1.0"
+authors = ["Tangent 128 <Tangent128@gmail.com>"]
+edition = "2018"
+
+[profile.release]
+lto = true
+codegen-units = 1
+debug = true
+
+[dependencies]
+lights = { path = "../lights" }
+lights_hal = { path = "../gemma_m0_lights", package = "gemma_m0_lights" }
diff --git a/hello_gradient/src/main.rs b/hello_gradient/src/main.rs
new file mode 100644
index 0000000..19f2798
--- /dev/null
+++ b/hello_gradient/src/main.rs
@@ -0,0 +1,32 @@
+#![no_std]
+#![no_main]
+
+use core::num::Wrapping;
+use lights::{
+    gamma::GammaCorrector,
+    PixelIterator,
+    rgb::{
+        blend,
+        gray,
+        Rgb
+    }
+};
+use lights_hal::{boot, delay, entry};
+
+#[entry]
+fn main() -> ! {
+    let mut lights = GammaCorrector(boot());
+
+    let mut red = Wrapping(0u8);
+    loop {
+        red += Wrapping(1);
+
+        let start = Rgb(red.0, 0, 0);
+        let end = Rgb(0, 100, 100u8.saturating_sub(red.0));
+
+        (0..20u8).map(
+            |x| blend(start, end, gray(x.saturating_mul(15)))
+        ).render_to(&mut lights);
+        delay(500_000);
+    }
+}