diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..85a13d7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.venv
+.vscode
+build
diff --git a/main.py b/main.py
index f6616dc..3b1eb98 100644
--- a/main.py
+++ b/main.py
@@ -1,36 +1,40 @@
 from fastapi import FastAPI
-import serial
+from pymodbus.client import ModbusSerialClient
+import time
 import threading
 from queue import Queue
 
-
 serial_port = "COM4"  
 baud_rate = 9600
-serial_conn = serial.Serial(serial_port, baud_rate)
+modbus_client = ModbusSerialClient(method='rtu', port=serial_port, baudrate=baud_rate)
 
-line = "0"
+modbus_queue = Queue()
 
-
-def read_from_arduino():
-    global line
+def poll_modbus():
     while True:
-        if serial_conn.in_waiting > 0:
-            line = serial_conn.read().decode()
-            print(line)
-            
+        if modbus_client.connect():
+            response = modbus_client.read_holding_registers(address=0, count=1, unit=1)
+            if not response.isError():
+                modbus_queue.put(response.registers[0])
+            modbus_client.close()
+        time.sleep(1)  
 
-threading.Thread(target=read_from_arduino, daemon=True).start()
+threading.Thread(target=poll_modbus, daemon=True).start()
 
 app = FastAPI()
 
-@app.get("/pin_state")
-async def get_pin_state():
-    return {"pin_state": line}
-    
+@app.get("/modbus_data")
+async def get_modbus_data():
+    if not modbus_queue.empty():
+        modbus_value = modbus_queue.get()  
+        return {"modbus_data": modbus_value}
+    else:
+        return {"error": "No data received"}
 
 @app.get("/")
 async def root():
-    return {"message": "Hello World"}
+    return {"message": "Welcome to Modbus with FastAPI"}
+
 
 if __name__ == "__main__":
     import uvicorn
diff --git a/project1/project1.ino b/project1/project1.ino
new file mode 100644
index 0000000..d93b471
--- /dev/null
+++ b/project1/project1.ino
@@ -0,0 +1,18 @@
+#include <ModbusSerial.h>
+const int GPIOCoil = 0;
+
+ModbusSerial modbus(Serial, 10);
+bool coils[10];
+int pinToRead = 2; 
+
+void setup() {
+  Serial.begin(9600); 
+  pinMode(pinToRead, INPUT);
+  modbus.addIsts(0);
+
+}
+
+void loop() {
+  modbus.setIsts(0, digitalRead(pinToRead));
+  modbus.task (); 
+}