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| − | DIY ESP32 Blinker: Designing and Building a Temperature Alarm Device Using ESP32
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| − | 1.Hardware Materials:
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| − | 1 * ESP32 development board
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| − | 1 * DHT11 temperature and humidity module
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| − | 1 * MQ-2 smoke module
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| − | 1 * MX1508 motor driver module
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| − | 1 * DC motor
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| − | 1 * OLED display module [white] [0.96 inches]
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| − | 1 * Buzzer module
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| − | 1 * MLX90614 infrared temperature measurement module
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| − | 1 * MICRO data cable [0.5m]
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| − | 1 * Battery [USB-A/microUSB]
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| − | Other potential components required (breadboard, resistors, capacitors, wires/DuPont wires, etc.)
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| − | Possible tools needed (multimeter, soldering iron and solder, pliers/scissors, wire strippers/lighter, regular tape/electrical tape/glue gun, etc.)
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| − | 2.Functionality:
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| − | Step1:The [https://www.unikeyic.com/products/100260146533367/ESP32-C3-13.html ESP32] development board reads temperature and humidity using the DHT11 sensor module, displaying the environmental temperature and humidity on the OLED screen and mobile app. When the temperature exceeds a certain level, the fan will be turned on.
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| − | Step2: The ESP32 development board monitors smoke gas concentration using the MQ-2 smoke sensor module. If the concentration exceeds a predefined level, the buzzer will trigger an alarm. The current smoke concentration and alarm status can be viewed on both the OLED screen and the mobile app.
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| − | Step3: The ESP32 development board measures both object and ambient temperatures using the MLX90614 infrared thermometer module. If the body temperature exceeds a specified threshold, warning messages will be displayed on the OLED screen and the mobile app
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| − | Step4: Users can set the smoke concentration threshold via the mobile app.
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| − | Step5: Users can configure the environmental temperature threshold through the mobile app.
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| − | Step6: Users can set the human body temperature threshold via the mobile app.
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| − | For any details not specifically covered, please consult the requirements and concept images/videos for guidance.
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| − | 3.post-update circuit diagram
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| − | 3.1Schematic diagram:
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| − | 3.2PCB diagram
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| − | 3.33D diagram
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| − | 3.4complete Arduino code
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| − | Below is the detailed process of the development code.
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| − | 4.Effect Demonstration
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| − | 4.1Blinker APP Mobile Interface
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| − | 4.2Video [https://www.bilibili.com/video/BV16u41127e6/ link]
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| − | Tag:Temperature Alarm Device, ESP32 Development Board, Electronic Components
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