You get the alert on your phone before an earthquake occurs, a project with only 4 electrical connections!
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Things used in this project
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Hardware components
HARDWARE LIST
DFRobot 6 DOF Sensor - MPU6050
ESP32 Lolin32
Breadboard (generic)
Software apps and online services
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Story
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This project only requires electrical connections between the MPU6050 module and the ESP32. It works in an area with a wifi network. The operating principle is based on the difference in propagation speed between the two characteristic waveforms of an earthquake: P wave and S wave.Ā The P wave will always arrive before the S wave, the MPU6050 sensor takes the information and sends it via the Internet to an Android or IoS device located in another location through the Cloud service from the XY Remote application. The principle of operation in images:
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The two characteristic waves of an earthquake: the harmless P wave and the S wave, the one that causes the greatest destruction. The difference in propagation speed is noticeable.
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The greater the distance from the epicenter of the earthquake, the more time the alert can be sent. Practically, those few tens of seconds can save human lives!Ā
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Communication via the Internet is done using the RemoteXY online application, which is free of charge up to a maximum of 5 graphic components on the screen, in our case there are 4, so the application and the created project are free.
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The application can be installed on Android or Ios.Ā
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THE CODE:
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*Since the password and SSID of the Internet network differ from the user's device, I recommend you to install Visuino and edit the two fields, password and SSID, following the instructions in the video.
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The code is compiled using the Visuino program, a software that allows programming a controller with just a few drag&drop operations. In the attachment you can find the code in both Arduino IDE and Visuino format.
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Schematics
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SCHEMATIC DIAGRAM
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Only 4 electrical connections!
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_AHDrDssBez.png)
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Code
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code
C/C++
CODE
{
"Config": {
"Build": {
"Board": "esp32:esp32:lolin32:FlashFreq=80,PartitionScheme=default,CPUFreq=240,UploadSpeed=921600"
}
},
"Version": "2",
"Product": "Visuino Pro - Visual Arduino Programming",
"Content": "OpenWire Diagram",
"Units": [
{
"Type": "Diagram",
"Name": "__OpenWireRootUnit__",
"*": [
{
"X": 1072,
"Name": "Arduino",
"Instance": {
"Serial": {
"*": [
{
"InputPin": {
"SourcePins": [
{
"ID": "__OpenWireRootUnit__.AnalogMultiMerger1.OutputPin"
}
]
},
"+": "TArduinoHardwareSerial"
},
{
"+": "TArduinoESP32DefinedPinsSerial1"
},
{
"+": "TArduinoESP32DefinedPinsSerial2"
}
]
},
"+": "TArduinoBoard",
"Modules": {
"*": [
{
"AccessPoint": {
"SSID": "",
"Password": ""
},
"HostName": "",
"+": "TArduinoESP32WiFiModule",
"AccessPoints": {
"*": [
{
"Password": "xxxxxxx",
"SSID": "xxxxxx",
"+": "TArduinoESP32WiFiModuleRemoteAccessPoint"
}
]
},
"Sockets": {
"*": [
{
"Name": "TCP Client1",
"InputPin": {
"SourcePins": [
{
"Name": "__OpenWireRootUnit__.RemoteXY1.Protocols.Cloud1.OutputPin",
"ID": "__OpenWireRootUnit__.RemoteXY1.Protocols._Item0.OutputPin"
}
]
},
"+": "TArduinoESP32WiFiTCPClientSocket"
}
]
}
},
{
"+": "TArduinoEEPROMModule"
},
{
"+": "TArduinoESP32ProcessorModule"
},
{
"+": "TArduinoESP32HallSensorModule"
},
{
"+": "TArduinoESP32BluetoothLEModule"
}
]
},
"I2CChannels": {
"*": [
{
"InputPin": {
"SourcePins": [
{
"ID": "__OpenWireRootUnit__.AccelerometerGyroscope1.OutputPin"
}
]
},
"+": "TArduinoESP32_Generic_I2C"
},
{
"+": "TArduinoESP32_Generic_I2C_2"
}
]
},
"Digital": {
"*": [
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalSerial0Channel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalSerial0Channel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedPullDownAnalogDigitalChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoESP32CombinedPullDownAnalogDigitalDACChannel"
},
{
"+": "TArduinoESP32CombinedPullDownAnalogDigitalDACChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoCombinedTouchPullDownAnalogDigitalInterruptChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
},
{
"+": "TArduinoPullDownTouchAnalogInputOnlyChannel"
}
]
},
"SPIChannels": {
"*": [
{
"+": "TArduinoESP32_Generic_SPI"
},
{
"+": "TArduinoESP32_Generic_SPI1"
}
]
},
"BoardType": "Generic ESP32"
},
"Type": "Component",
"Y": 336
},
{
"X": 800,
"Name": "RemoteXY1",
"Instance": {
"+": "TArduinoRemoteXY",
"Protocols": {
"*": [
{
"Name": "Cloud1",
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.Arduino.Modules.WiFi.Sockets.TCP Client.InputPin",
"ID": "__OpenWireRootUnit__.Arduino.Modules._Item0.Sockets._Item0.InputPin"
}
]
},
"+": "TArduinoRemoteXYProtocolCloud",
"Token": "d4378c457561b775db1a3910deb1d252"
}
]
},
"Config": "255,0,0,17,0,46,0,16,1,0,68,1,0,27,100,36,95,24,69,0,\r\n5,2,10,10,6,67,4,4,13,95,14,139,1,11,129,0,23,2,59,8,\r\n136,83,69,73,83,77,79,71,82,65,80,72,0",
"Elements": {
"*": [
{
"InputPins": {
"Form": "__OpenWireRootUnit__",
"Pins": [
{
"Type": "ptSink",
"SourcePin": {
"ID": "__OpenWireRootUnit__.MapRange1.OutputPin"
}
}
]
},
"Name": "onlineGraph_1",
"+": "TArduinoRemoteXYGraphElement"
},
{
"Name": "sound_1",
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.Timer1.OutputPin"
}
},
"+": "TArduinoRemoteXYSoundElement",
"Sound": 2005
},
{
"Name": "text_1",
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.TextValue1.OutputPin"
}
},
"+": "TArduinoRemoteXYTextElement"
}
]
}
},
"Type": "Component",
"Y": 368
},
{
"X": 256,
"Name": "AccelerometerGyroscope1",
"Instance": {
"Gyroscope": {
"OutputPins": {
"Form": "__OpenWireRootUnit__",
"Pins": [
{
"Type": "ptSource",
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins.Pin [0]",
"ID": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins._Pin0"
}
]
},
{
"Type": "ptSource",
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins.Pin [1]",
"ID": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins._Pin1"
}
]
},
{
"Type": "ptSource",
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins.Pin [2]",
"ID": "__OpenWireRootUnit__.AnalogMultiMerger1.InputPins._Pin2"
}
]
}
]
}
},
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.Arduino.I2CChannels.Item[ 0 ].InputPin",
"ID": "__OpenWireRootUnit__.Arduino.I2CChannels._Item0.InputPin"
}
]
},
"+": "TArduinoMPU6050I2C"
},
"Type": "Component",
"Y": 496
},
{
"X": 528,
"Name": "AnalogMultiMerger1",
"Instance": {
"InputPins": {
"Pins": [
{
"Type": "ptSink",
"SourcePin": {
"Name": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins.X",
"ID": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins._Pin0"
}
},
{
"Type": "ptSink",
"SourcePin": {
"Name": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins.Y",
"ID": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins._Pin1"
}
},
{
"Type": "ptSink",
"SourcePin": {
"Name": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins.Z",
"ID": "__OpenWireRootUnit__.AccelerometerGyroscope1.Gyroscope.OutputPins._Pin2"
}
}
],
"Count": 3,
"Form": "__OpenWireRootUnit__"
},
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.Arduino.Serial.Item[ 0 ] (9600).InputPin",
"ID": "__OpenWireRootUnit__.Arduino.Serial._Item0.InputPin"
},
{
"ID": "__OpenWireRootUnit__.MapRange1.InputPin"
}
]
},
"+": "TArduinoAnalogMultiMerger"
},
"Type": "Component",
"Y": 288
},
{
"X": 736,
"Name": "MapRange1",
"Instance": {
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.RemoteXY1.Elements.onlineGraph_1.InputPins.Pin [0]",
"ID": "__OpenWireRootUnit__.RemoteXY1.Elements._Item0.InputPins._Pin0"
},
{
"ID": "__OpenWireRootUnit__.CompareValue1.InputPin"
},
{
"ID": "__OpenWireRootUnit__.CompareValue2.InputPin"
}
]
},
"InputRange": {
"Max": 10,
"Min": -10
},
"+": "TArduinoMapRange",
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.AnalogMultiMerger1.OutputPin"
}
},
"OutputRange": {
"Min": 0
}
},
"Type": "Component",
"Y": 256
},
{
"X": 544,
"Name": "CompareValue1",
"Instance": {
"Value": 0.150000005960464,
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.MapRange1.OutputPin"
}
},
"+": "TArduinoCompareValue",
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.Or1.InputPins.Pin [0]",
"ID": "__OpenWireRootUnit__.Or1.InputPins._Pin0"
}
]
}
},
"Type": "Component",
"Y": 528
},
{
"X": 544,
"Name": "CompareValue2",
"Instance": {
"Value": -0.150000005960464,
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.MapRange1.OutputPin"
}
},
"+": "TArduinoCompareValue",
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.Or1.InputPins.Pin [1]",
"ID": "__OpenWireRootUnit__.Or1.InputPins._Pin1"
}
]
},
"CompareType": "ctBigger"
},
"Type": "Component",
"Y": 576
},
{
"X": 576,
"Name": "Or1",
"Instance": {
"InputPins": {
"Form": "__OpenWireRootUnit__",
"Pins": [
{
"Type": "ptSink",
"SourcePin": {
"ID": "__OpenWireRootUnit__.CompareValue1.OutputPin"
}
},
{
"Type": "ptSink",
"SourcePin": {
"ID": "__OpenWireRootUnit__.CompareValue2.OutputPin"
}
}
]
},
"OutputPin": {
"SinkPins": [
{
"ID": "__OpenWireRootUnit__.Timer1.StartInputPin"
}
]
},
"+": "TArduinoBooleanOr"
},
"Type": "Component",
"Y": 672
},
{
"X": 576,
"Name": "Timer1",
"Instance": {
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.RemoteXY1.Elements.sound_1.InputPin",
"ID": "__OpenWireRootUnit__.RemoteXY1.Elements._Item1.InputPin"
},
{
"Name": "__OpenWireRootUnit__.PulseGenerator1.Enabled",
"ID": "__OpenWireRootUnit__.PulseGenerator1.EnabledInputPin"
},
{
"ID": "__OpenWireRootUnit__.Inverter1.InputPin"
}
]
},
"StartInputPin": {
"SourcePins": [
{
"ID": "__OpenWireRootUnit__.Or1.OutputPin"
}
]
},
"+": "TArduinoTimer",
"Interval": 5000000
},
"Type": "Component",
"Y": 800
},
{
"X": 800,
"Name": "TextValue1",
"Instance": {
"Value": "",
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.RemoteXY1.Elements.text_1.InputPin",
"ID": "__OpenWireRootUnit__.RemoteXY1.Elements._Item2.InputPin"
}
]
},
"+": "TArduinoTextValue",
"Elements": {
"*": [
{
"Value": "EARTHQUAKE!!!",
"Name": "Set Value State1",
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.PulseGenerator1.OutputPin"
}
},
"+": "TArduinoTextStateSetValueElement"
}
]
}
},
"Type": "Component",
"Y": 656
},
{
"X": 816,
"Name": "PulseGenerator1",
"Instance": {
"Frequency": 1.5,
"OutputPin": {
"SinkPins": [
{
"Name": "__OpenWireRootUnit__.TextValue1.Elements.Set Value State.InputPin",
"ID": "__OpenWireRootUnit__.TextValue1.Elements._Item0.InputPin"
}
]
},
"+": "TArduinoPulseGenerator",
"@": [
{
"PinName": "Enabled",
"@": "Enabled",
"+": "TOWBooleanSinkPinBinding",
"SourcePin": {
"ID": "__OpenWireRootUnit__.Timer1.OutputPin"
},
"Component": "PulseGenerator1"
}
],
"ResetInputPin": {
"SourcePins": [
{
"ID": "__OpenWireRootUnit__.Inverter1.OutputPin"
}
]
},
"Phase": 0,
"Asymmetry": 0
},
"Type": "Component",
"Y": 832
},
{
"X": 704,
"Name": "Inverter1",
"Instance": {
"InputPin": {
"SourcePin": {
"ID": "__OpenWireRootUnit__.Timer1.OutputPin"
}
},
"OutputPin": {
"SinkPins": [
{
"ID": "__OpenWireRootUnit__.PulseGenerator1.ResetInputPin"
}
]
},
"+": "TArduinoBooleanInverter"
},
"Type": "Component",
"Y": 880
}
]
}
]
}The article was first published in hackster, May 15, Ā 2023
cr: https://www.hackster.io/cristinepotu7171/internet-earthquake-alert-only-4-electrical-connections-0aeb5e
author: Toparceanu Cristian
License 
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Reserved
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