diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..36c63fb
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "embedded-hal"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"
+
+[[package]]
+name = "mb85rc"
+version = "0.1.0"
+dependencies = [
+ "embedded-hal",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..eb2c25d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "mb85rc"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+embedded-hal = "1.0.0"
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..c516465
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,5 @@
+const DEVICE_ADDRESS: u8 = 0b10100000;
+const DEVICE_ADDRESS_CODE: u8 = 0b00000000;
+const DEVICE_W: u8 = 0b00000000;
+const DEVICE_R: u8 = 0b00000001;
+