diff --git a/software/boards/iten/valve_node/valve_node_defconfig b/software/boards/iten/valve_node/valve_node_defconfig
index bf33e2b..3b057cd 100644
--- a/software/boards/iten/valve_node/valve_node_defconfig
+++ b/software/boards/iten/valve_node/valve_node_defconfig
@@ -7,3 +7,9 @@ CONFIG_CONSOLE=y
 
 # enable GPIO
 CONFIG_GPIO=y
+
+# modbus config
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_LINE_CTRL=n
+CONFIG_MODBUS=y
+CONFIG_MODBUS_ROLE_CLIENT=y
\ No newline at end of file
diff --git a/software/test_canbus/prj.conf b/software/test_canbus/prj.conf
new file mode 100644
index 0000000..69162ba
--- /dev/null
+++ b/software/test_canbus/prj.conf
@@ -0,0 +1,13 @@
+CONFIG_LOG=y
+CONFIG_LOG_DEFAULT_LEVEL=3
+CONFIG_CBPRINTF_FP_SUPPORT=y
+
+CONFIG_UART_CONSOLE=y # Console on USART1
+#CONFIG_RTT_CONSOLE=y
+#CONFIG_USE_SEGGER_RTT=y
+
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_LINE_CTRL=n
+
+CONFIG_MODBUS=y
+CONFIG_MODBUS_ROLE_CLIENT=y
\ No newline at end of file