The EMP - Electricity Price Alert Device

• Description
• Features
• Requirements
• Configuration

Description

The EMP, or the Energy Monitoring Panel is an experimental IoT student project that displays real-time electricity prices and alerts the user when prices rise above configurable thresholds. The device uses visual indicators and sound notifications, and may optionally integrate with a Telegram bot for remote alerts.

The hardware will be housed in a 3D-printed lightning bolt-shaped casing with an integrated display.

This project is built as a learning exercise in:

• IoT systems design
• API integration
• Embedded programming
• UI design
• Responsive user notification systems
• 3D printing for hardware enclosure design

Requirements

Hardware Requirements

• ESP32
• Display module
• Amplifier
• Small speaker
• 3D printed enclosure

This project depends on the following 3rd party libraries:

• ArduinoJson
• ezTime
• Adafruit GFX
• Adafruit ST7735

Configuration

Create a secrets.h file:

const char* WIFI_PASSWORD = "";
const char* PRICE_API_URL = "https://api.porssisahko.net/v2/latest-prices.json";
const char* TEMP_API_URL = "https://api.open-meteo.com/v1/forecast?latitude=60.17&longitude=24.94&current_weather=true";

Add secrets.h to .gitignore