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Hardware

Requirements

  • Wi-Fi network (WPA-PSK, WPA2-PSK, open)
  • Arduino/Genuino IDE with ESP8266 sdk installed. If you haven't ESP8266 sdk:
    • Open Preferences window (from File menu)
    • Enter http://arduino.esp8266.com/stable/package_esp8266com_index.json into Additional Board Manager URLs field. You can add multiple URLs, separating them with commas.
    • Close with "OK", open Boards Manager from Tools > Board menu and install esp8266 platform (and don't forget to select NodeMCU 1.0 (ESP-12E) board from Tools > Board menu after installation).
  • Arduino/Genuino IDE libraries: WiFiManager, PubSubClient
    • Open Include Libraries from Sketch menu, and choose Manage Libraries
    • Type WiFiManager into search bar, then install it by clicking on Install button below; the same for PubSubClient
    • Close window
  • NodeMCU 1.0 devkit board with ESP-12E module
  • MPU6050 Accelerometer
  • (optional) 3 LEDs (red-green-yellow) with 3 resistors

Tested with Arduino/Genuino IDE 1.8.1, PubSubClient 2.6 and WiFiManager 0.12.0

Step 1: Accelerometer MPU6050

Link these pins from Accelerometer MPU6050 to NodeMCU board:

  • 3v3: 3v3
  • GND: GND
  • SDA: D1
  • SCL: D2

Step 2: (optional) LEDs

Remember to put a resistor with LED (after/before is not really important) to limit current flowing, otherwise you may damage the NodeMCU board.

By default, LED pins are:

  • Pin D5 : Green
  • Pin D6 : Yellow
  • Pin D7 : Red

Step 3: Software

For NodeMCU, you need to download WifiManager library (by using Sketch > include library > library manager)

  1. Download the source code (for stable releases, please checkout latest git tag)
  2. Open project in Arduino IDE
  3. Choose the right Port and Board into Tools menu (if you're unsure, use NodeMCU 1.0)
  4. Compile and upload (2nd button below menus) in your board
  5. Connect to SeismoCloud Wi-Fi network and configure Wi-Fi client network parameters. On save, the board reboots and will try to connect to Wi-Fi network. If it fails, you can reconnect to SeismoCloud network and modify/fix network parameters.
  6. Open SeismoCloud app, connect to the same network of the board and register your device. Enjoy!