AC Power Current Monitoring - PZEM-004T-V30 & NODEMCU ESP8266

AC power current monitoring with web dashboard

Usage

1. Download or copy monit_dashboard.ino file.
2. Add WiFi credentials.

• WiFi SSID: your WiFi Name.
• Wifi Password: your WiFi Password.

3. Download required libraries:

• PZEM-004T-v30
• Adafruit_SSD1306
• ESP8266WebServer

Schema

PinOut

PZEM to NODEMCU

PZEM	NODEMCU
5V	3V3
GND	GND
TX	D5
RX	D6

---

Display SSD1306 to NODEMCU

SSD1306	NODEMCU
VCC	3V3
GND	GND
SDA	D2
SCL	D1

---

Relay Module 5v dual channel to NODEMCU

Relay Module	NODEMCU
VCC	5V Output From Adapter or similar
❌ Do not use 3V3 output from NODEMCU
GND	GND
IN 1	D7
IN 2	D8