diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..a3270f6
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+has nix && use nix
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..97478eb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/pico-sdk"]
+	path = lib/pico-sdk
+	url = https://github.com/raspberrypi/pico-sdk
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..52e8fef
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.13)
+
+set(PICO_SDK_PATH lib/pico-sdk)
+include(lib/pico-sdk/external/pico_sdk_import.cmake)
+
+project(vibe-check)
+
+pico_sdk_init()
+
+add_executable(vibe-check
+    src/main.c
+)
+
+# Add pico_stdlib library which aggregates commonly used features
+target_link_libraries(vibe-check pico_stdlib)
+
+# create map/bin/hex/uf2 file in addition to ELF.
+pico_add_extra_outputs(vibe-check)
diff --git a/lib/pico-sdk b/lib/pico-sdk
new file mode 160000
index 0000000..f396d05
--- /dev/null
+++ b/lib/pico-sdk
@@ -0,0 +1 @@
+Subproject commit f396d05f8252d4670d4ea05c8b7ac938ef0cd381
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..f057545
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,6 @@
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    cmake python3 gcc-arm-embedded
+  ];
+}
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..bd67fad
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+
+int main() {
+    setup_default_uart();
+    printf("Hello, world!\n");
+    return 0;
+}