Firemate IOT

This is the IOT-side code, you can see the full documentation here.

Since the ESP8266 only has one analog pin, but we needed to connect two analog sensors, we implemented a solution to switch the sensors on and off. Here's the process:

• Activate the smoke sensor and deactivate the fire sensor.
• Check for smoke detection with the smoke sensor.
• Deactivate the smoke sensor and activate the fire sensor.
• If the fire sensor detects a flame, it will send the data to Firebase.

Detailed pin connection

NEO-6M GPS Module

NEO-6M GPS Module	ESP8266
RX	D2
TX	D1
VCC	VIN
GND	GND

KY-026 Flame Sensor

KY-026 Flame Sensor	ESP8266
A0	A0
+	D5
GND	GND

MQ-2 Smoke/Gas Sensor

MQ-2 Smoke/Gas Sensor	ESP8266
A0	A0
+	3V3
GND	GND

Buzzer

Buzzer	ESP8266
+	D6
-	GND

ESP32-CAM

ESP32-CAM	ESP8266
RX	TX
3V3	3V3
GND	GND