⚡ESP Smart Energy Meter

A Smart Power Monitoring device, is intricately crafted, focusing on accuracy and versatility in tracking electrical parameters, such as voltage, current, power, and energy consumption.

Core Features

This device is intended to function with alternating current (AC) and to monitor various electrical parameters.

• Current
• Voltage
• Frequency
• Power Factor
• Realtime Power Consumption (Watt)
• Store Power Consumption (Watt-hour)

Prerequisites

This device was built with ESPHome and is intended to work with Home Assistant.

Modules

• ESP32 DevKit V1 MCU
• PZEM-004T V3
• SSD1306 OLED Display Module
• HiLink HLK-5M05 AC/DC Buck Converter 100-240 VAC to 5 DC 1A(5W)

Getting Started

Pictorial Diagram

Pin Connections

PZEM-004T V3 Pin	SSD1306 OLED Pin	HiLink AC-DC Pin	ESP32 Devkit V1 Pin
RX	❌	❌	TX2
TX	❌	❌	RX2
❌	SCL	❌	D22
❌	SDA	❌	D21
❌	VCC	❌	3V3
VCC	❌	VOUT➕	VIN
GND	GND	VOUT➖	GND

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1. Ensure ESPhome and File Editor add-ons are installed on your Home Assistant instance.
2. Ensure that your ESPHome secrets.yaml file is up to date.
3. Using the File Editor add-ons, upload the esp-energy-meter.yaml config file along with materialdesignicons-webfont.ttf font file on the config/esphome/.
4. Using the ESPHome dashboard, modify the esp-energy-meter.yaml and replace the redacted part of the config file.
5. Build and upload the firmware to your device.
6. Now, you can integrate the device into your Home Assistant.

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Operational Device