Added IoT NodeMCU → ServiceNow REST integration snippet

Author: Vibhasha-5

Integration/IoT_NodeMCU_ServiceNow_REST/NodeMCU_IoT_Sensor.ino

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+
+---
+
+## ⚡ 2. NodeMCU_IoT_Sensor.ino
+
+```cpp
+#include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
+#include <DHT.h>
+
+#define DHTPIN D4      // Pin connected to sensor
+#define DHTTYPE DHT11  // DHT 11 sensor
+
+const char* ssid = "YOUR_WIFI_SSID";
+const char* password = "YOUR_WIFI_PASSWORD";
+const char* serverName = "https://YOUR_INSTANCE.service-now.com/api/x_iot/iotdeviceapi/data";
+const char* user = "YOUR_SERVICENOW_USER";
+const char* userPassword = "YOUR_SERVICENOW_PASSWORD";
+
+DHT dht(DHTPIN, DHTTYPE);
+
+void setup() {
+  Serial.begin(115200);
+  WiFi.begin(ssid, password);
+  dht.begin();
+  Serial.print("Connecting to WiFi");
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(1000);
+    Serial.print(".");
+  }
+  Serial.println("\nConnected!");
+}
+
+void loop() {
+  float temperature = dht.readTemperature();
+  float humidity = dht.readHumidity();
+
+  if (isnan(temperature) || isnan(humidity)) {
+    Serial.println("Failed to read from DHT sensor!");
+    return;
+  }
+
+  if (WiFi.status() == WL_CONNECTED) {
+    HTTPClient http;
+    http.begin(serverName);
+    http.setAuthorization(user, userPassword);
+    http.addHeader("Content-Type", "application/json");
+
+    String payload = "{";
+    payload += "\"device_id\":\"PARK01\",";
+    payload += "\"status\":\"occupied\",";
+    payload += "\"temperature\":" + String(temperature) + ",";
+    payload += "\"humidity\":" + String(humidity);
+    payload += "}";
+
+    int httpCode = http.POST(payload);
+    String response = http.getString();
+
+    Serial.println(httpCode);
+    Serial.println(response);
+    http.end();
+  } else {
+    Serial.println("WiFi not connected");
+  }
+  delay(10000); // send every 10 seconds
+}

Integration/IoT_NodeMCU_ServiceNow_REST/README.md

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+# IoT NodeMCU → ServiceNow REST Integration
+
+##  Overview
+This snippet demonstrates how to send real-time sensor data (e.g., parking slot status, temperature, or humidity) from a **NodeMCU (ESP8266)** board to a **ServiceNow instance** using the REST API.  
+It shows how edge IoT devices can log events directly into ServiceNow tables such as `x_iot_device_data` or `incident`.
+
+
+
+##  Components
+- NodeMCU (ESP8266)
+- DHT11 Temperature/Humidity sensor (or IR/Ultrasonic sensor)
+- Wi-Fi connection
+- ServiceNow instance with Scripted REST API enabled
+
+
+
+##  NodeMCU Script (`NodeMCU_IoT_Sensor.ino`)
+Connects to Wi-Fi, reads sensor data, and sends JSON payload to ServiceNow REST endpoint.
+
+
+
+##  ServiceNow Scripted REST API (`ServiceNow_REST_Endpoint.js`)
+Receives JSON payload and inserts into the `x_iot_device_data` table.
+
+
+
+##  How to Use
+1. **ServiceNow Setup**
+   - Navigate to **System Web Services → Scripted REST APIs**
+   - Create a new API called `IoTDeviceAPI`
+   - Add a resource `/data`
+   - Paste code from `ServiceNow_REST_Endpoint.js`
+   - Test via Postman
+
+2. **NodeMCU Setup**
+   - Update Wi-Fi credentials: `ssid` and `password`
+   - Update ServiceNow endpoint URL, username, and password
+   - Flash code using Arduino IDE
+   - Open Serial Monitor to verify successful data push
+
+3. **Verify in ServiceNow**
+   - Check `x_iot_device_data` table for new records
+   - Optional: create Flow Designer flow for automation
+
+##  Example Output
+
+```json
+{
+  "device_id": "PARK01",
+  "status": "occupied",
+  "temperature": 28,
+  "humidity": 60,
+  "timestamp": "2025-10-27T14:23:05Z"
+}
+
+

Integration/IoT_NodeMCU_ServiceNow_REST/ServiceNow_REST_Endpoint.js

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+(function process(/*RESTAPIRequest*/ request, /*RESTAPIResponse*/ response) {
+    var body = JSON.parse(request.body.data);
+
+    var rec = new GlideRecord('x_iot_device_data');
+    rec.initialize();
+    rec.device_id = body.device_id;
+    rec.status = body.status;
+    rec.temperature = body.temperature;
+    rec.humidity = body.humidity;
+    rec.timestamp = new GlideDateTime();
+    rec.insert();
+
+    return { message: 'Data inserted successfully' };
+})(request, response);

Integration/IoT_NodeMCU_ServiceNow_REST/c_cpp_properties.json

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+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "C:/Users/ameet/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/*/cores/esp8266",
+                "C:/Users/ameet/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/*/libraries/**",
+                "C:/Users/ameet/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/*/tools/sdk/include",
+                "C:/Users/ameet/Documents/Arduino/libraries/**"
+            ],
+            "defines": [
+                "ARDUINO=10819",
+                "ESP8266"
+            ],
+            "compilerPath": "C:/Users/ameet/AppData/Local/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/*/bin/xtensa-lx106-elf-g++.exe",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "gcc-x64"
+        }
+    ],
+    "version": 4
+}