diff --git a/Cargo.lock b/Cargo.lock
index 67e6a78..b8099aa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -173,6 +173,12 @@ version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "bytes"
 version = "1.6.1"
@@ -482,12 +488,32 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40ecd4077b5ae9fd2e9e169b102c6c330d0605168eb0e8bf79952b256dbefffd"
 
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+dependencies = [
+ "hash32",
+ "serde",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -994,6 +1020,14 @@ dependencies = [
  "xca9548a",
 ]
 
+[[package]]
+name = "radomctl-protocol"
+version = "0.1.0"
+dependencies = [
+ "heapless",
+ "serde",
+]
+
 [[package]]
 name = "radomctld"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index fe5402c..ed7d23d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,7 @@ resolver = "2"
 members = [ 
     "daemon",
     "firmware",
+    "protocol",
 ]
 
 
diff --git a/protocol/Cargo.toml b/protocol/Cargo.toml
new file mode 100644
index 0000000..201707b
--- /dev/null
+++ b/protocol/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "radomctl-protocol"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+serde = {version = "1.0.193", default-features = false, features = ["derive"]}
+heapless = {version = "0.8.0", features = ["serde"]}
\ No newline at end of file
diff --git a/protocol/src/lib.rs b/protocol/src/lib.rs
new file mode 100644
index 0000000..4793873
--- /dev/null
+++ b/protocol/src/lib.rs
@@ -0,0 +1,37 @@
+#![no_std]
+use heapless::Vec;
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, PartialEq)]
+pub enum RadomMessage {
+    Status(StatusMessage),
+}
+
+#[derive(Serialize, Deserialize, Debug, PartialEq)]
+pub enum HostMessage {
+    RequestStatus,
+    TriggerDFUBootloader,
+}
+
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
+pub struct StatusMessage {
+    position: Position,
+    alarms: Vec<Alarm, 64>,
+}
+
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
+pub struct Position {
+    az: f32,
+    el: f32,
+    az_endcoder: f32,
+    el_encoder: f32,
+    az_magnetic: f32,
+    el_magnetic: f32,
+}
+
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
+pub enum Alarm {
+    AZEncoderFault,
+    ELEncoderFault,
+}