diff --git a/software/CMakeLists.txt b/software/CMakeLists.txt
index 04f0e5d..ccd0e02 100644
--- a/software/CMakeLists.txt
+++ b/software/CMakeLists.txt
@@ -5,3 +5,4 @@ project(software)
 add_subdirectory(modules/modbus_server)
 add_subdirectory(modules/valve)
 add_subdirectory(modules/fwu)
+add_subdirectory(apps/hello_world)
diff --git a/software/apps/hello_world/CMakeLists.txt b/software/apps/hello_world/CMakeLists.txt
new file mode 100644
index 0000000..8728b9c
--- /dev/null
+++ b/software/apps/hello_world/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.20)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(hello_world)
+
+target_sources(app PRIVATE src/main.c)
diff --git a/software/apps/hello_world/prj.conf b/software/apps/hello_world/prj.conf
new file mode 100644
index 0000000..ef1ed77
--- /dev/null
+++ b/software/apps/hello_world/prj.conf
@@ -0,0 +1,4 @@
+CONFIG_BOARD="stm32g431_core"
+CONFIG_CONSOLE=y
+CONFIG_LOG=y
+CONFIG_UART_CONSOLE=y
diff --git a/software/apps/hello_world/src/main.c b/software/apps/hello_world/src/main.c
new file mode 100644
index 0000000..dbec9a8
--- /dev/null
+++ b/software/apps/hello_world/src/main.c
@@ -0,0 +1,9 @@
+#include <zephyr/kernel.h>
+#include <zephyr/sys/printk.h>
+
+int main(void)
+{
+	printk("Hello World! %s\n", CONFIG_BOARD);
+	return 0;
+}
+