diff --git a/.gitignore b/.gitignore
index d1fd1d6..74e9a01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,11 @@
 !flake.nix
 !flake.lock
 
+!euler/
+!euler/**
+euler/target/
+
 !xiao-esp32c6/
 !xiao-esp32c6/**
-xiao-esp32c6/.embuild
-xiao-esp32c6/target
+xiao-esp32c6/.embuild/
+xiao-esp32c6/target/
diff --git a/euler/Cargo.lock b/euler/Cargo.lock
new file mode 100644
index 0000000..338c190
--- /dev/null
+++ b/euler/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "euler"
+version = "0.1.0"
diff --git a/euler/Cargo.toml b/euler/Cargo.toml
new file mode 100644
index 0000000..b5bad1f
--- /dev/null
+++ b/euler/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "euler"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/euler/src/lib.rs b/euler/src/lib.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/euler/src/lib.rs
@@ -0,0 +1 @@
+
diff --git a/euler/src/main.rs b/euler/src/main.rs
new file mode 100644
index 0000000..f328e4d
--- /dev/null
+++ b/euler/src/main.rs
@@ -0,0 +1 @@
+fn main() {}