added source

updated gitignore
updated platformio.ini

.gitignore

@@ -1,2 +1,3 @@
 .pio
 .vscode/
+platformio_keyble.ini

platformio.ini

@@ -7,8 +7,12 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+extra_configs = platformio_keyble.ini
 
 [env:d1_mini]
 platform = espressif8266
 board = d1_mini
-framework = esp8266-nonos-sdk
+framework = arduino
+lib_deps = knolleary/pubsubclient
+monitor_speed = 115200

platformio_keyble.ini.example

@@ -0,0 +1,6 @@
+[env:d1_mini]
+build_flags = 
+    -D WIFI_SSID=\"wifi ssid\"
+    -D WIFI_PASS=\"wifi password\"
+    -D MQTT_SERVER=\"mqtt broker address\"
+    -D MQTT_PORT=mqtt port number

src/main.c++

@@ -0,0 +1,90 @@
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+// Update these with your WiFi credentials
+const char* ssid = WIFI_SSID;
+const char* password = WIFI_PASS;
+
+// Update these with your MQTT Broker details
+const char* mqtt_server = MQTT_SERVER;
+const unsigned int mqtt_port = MQTT_PORT; // Default port
+
+const char* mqtt_topic = "backdoor/control";
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+
+void setup_wifi() {
+    delay(10);
+    // Connecting to a WiFi network
+    WiFi.begin(ssid, password);
+    while (WiFi.status() != WL_CONNECTED) {
+        delay(500);
+        Serial.print(".");
+    }
+    Serial.println("");
+    Serial.println("WiFi connected");
+    Serial.println("IP address: ");
+    Serial.println(WiFi.localIP());
+}
+
+void callback(char* topic, byte* payload, unsigned int length) {
+    payload[length] = '\0'; // Null-terminate the payload
+    String message = String((char*)payload);
+    Serial.print("Message arrived [");
+    Serial.print(topic);
+    Serial.print("] ");
+    Serial.println(message);
+
+    if (String(topic) == mqtt_topic) {
+        if (message == "unlock") {
+            digitalWrite(D3, LOW);
+            delay(500); // 1/2 second
+            digitalWrite(D3, HIGH);
+        } else if (message == "lock") {
+            digitalWrite(D4, LOW);
+            delay(500); // 1/2 second
+            digitalWrite(D4, HIGH);
+        }
+    }
+}
+
+void reconnect() {
+    // Loop until we're reconnected
+    while (!client.connected()) {
+        Serial.print("Attempting MQTT connection...");
+        // Attempt to connect
+        if (client.connect("ESP8266Client")) {
+            Serial.println("connected");
+            // Subscribe
+            client.subscribe(mqtt_topic);
+        } else {
+            Serial.print("failed, rc=");
+            Serial.print(client.state());
+            Serial.println(" try again in 5 seconds");
+            // Wait 5 seconds before retrying
+            delay(5000);
+        }
+    }
+}
+
+void setup() {
+    Serial.begin(115200);
+    delay(10);
+    Serial.println("Starting setup");
+    setup_wifi();
+    client.setServer(mqtt_server, mqtt_port);
+    client.setCallback(callback);
+
+    pinMode(D3, OUTPUT);
+    pinMode(D4, OUTPUT);
+    digitalWrite(D3, HIGH);
+    digitalWrite(D4, HIGH);
+}
+
+void loop() {
+    if (!client.connected()) {
+        reconnect();
+    }
+    client.loop();
+}