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Design of smoke SMS alarm based on STM32 (program, PCB, schematic diagram)

Overview

Main functions: Detect whether there is smoke and flammable gas in the environment. If the above gases are present, send an alarm text message to the mobile phone.

Hardware introduction:

Main control microcontroller: STM32F103C8T6, 8M main frequency crystal oscillator, I use the smallest system board

Smoke sensor: MQ-2 smoke sensor module, with comparator, adjustable sensitivity, using digital output interface to connect to the microcontroller GSM/GPRS module: Guoyun GA6-B GSM/GPRS module, only supports China Mobile and China Unicom phone cards

Design Files

Source code+PCB

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Update:2025-06-24 20:35:38

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