ESP32 Energy Price Signal Device (BlockPulse Prototype)

I built a small ESP32 device that helps households know when electricity is cheap or expensive.

The device uses a simple LED signal:

Green = good moment to use electricity

Yellow = neutral

Red = expensive electricity

The goal is to make electricity pricing easy to understand without apps or dashboards.

This prototype is called BlockPulse and uses:

- ESP32

- OLED display

- LED indicator

- simple hardware components

The idea is to help people use electricity at the best moment and reduce energy costs.

If you want to see how the device works and future versions, you can visit:

https://blockpulse.be

ESP32 development board

SSD1306 OLED display

LED indicator module

Breadboard

Jumper wires

USB power supply

This prototype shows how electricity price signals can be simplified with a visual indicator.

The device uses an ESP32 microcontroller and a small OLED screen.

A simple LED signal shows the electricity price status:

Green LED → electricity is cheap

Yellow LED → normal price

Red LED → electricity is expensive

The goal is to give households a very simple signal to know when to use electricity.

The prototype is built with simple electronic components:

- ESP32 development board

- SSD1306 OLED display

- LED indicator module

- Breadboard

- jumper wires

The ESP32 reads electricity price data and controls the LED signal and the OLED display.

This project is part of a larger idea called BlockPulse.

You can see the project and future versions here:

https://blockpulse.be

This prototype is part of a larger idea called BlockPulse.

The goal is to create a simple device that helps households use electricity at the best moment and reduce energy costs.

Future versions will include:

- a compact case

- WiFi data integration

- improved LED indicators

- optional solar powered version

You can see the project here:

https://blockpulse.be