Step 1 – Connect the Hardware
Step 2 – Connect the Current Source
Step 3 – Connect NodeMCU to the Computer
Step 4 – Write the Arduino Program
Step 5 – Configure Wi-Fi and KiwisIoT
Step 6 – Upload and Test the Code
Step 7 – Send Sensor Data to KiwisIoT
Step 8 – Create the Dashboard
Step 9 – Monitor the Current in Real Time
Step 10 – Final Result

Published September 23, 2026

Current Sensor Integration with the KiwisIoT Platform

Real-time current monitoring made efficient with KiwisIoT, enabling accurate tracking, instant insights, and smarter energy management.

BeginnerWork in progress10

Current Sensor Integration with the KiwisIoT Platform

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

USB-A to Mini-USB Cable

SparkFun Electronics SparkFun Low Current Sensor Breakout - ACS712

Female/Female Jumper Wires

Software apps and online services

Arduino IDE

Kiwistron KiwisIoT

Story

Step 1 – Connect the Hardware

I connected the current sensor module to the NodeMCU ESP8266 using jumper wires. The sensor output was connected to the analog input pin of the NodeMCU.

Step 2 – Connect the Current Source

The electrical source/load was connected through the current sensor so that the sensor could detect changes in current flow.

Step 3 – Connect NodeMCU to the Computer

I connected the NodeMCU to my computer using a USB cable. This connection was used to power the board and upload the program.

Step 4 – Write the Arduino Program

I developed the program using the Arduino IDE. The code reads the analog value from the current sensor and prepares the data for transmission to KiwisIoT.

Step 5 – Configure Wi-Fi and KiwisIoT

I added my Wi-Fi details and KiwisIoT Topic ID to the program. This allows the NodeMCU to connect to the internet and communicate with the KiwisIoT platform.

Step 6 – Upload and Test the Code

I uploaded the program to the NodeMCU and opened the Serial Monitor. The current sensor readings were displayed continuously, which confirmed that the sensor was working.

Step 7 – Send Sensor Data to KiwisIoT

The NodeMCU sends the current sensor readings to the KiwisIoT cloud platform through Wi-Fi at regular intervals.

Step 8 – Create the Dashboard

I added a Gauge widget to the KiwisIoT dashboard and linked it with the current sensor data channel.

Step 9 – Monitor the Current in Real Time

The sensor values can now be viewed on the KiwisIoT dashboard. When the current changes, the displayed value is updated.

Step 10 – Final Result

The project successfully demonstrates IoT-based current monitoring using a NodeMCU ESP8266, current sensor, and KiwisIoT. It can be further developed for energy monitoring, abnormal current detection, and power-usage analysis.I wanted to build a simple system to monitor how much current an electrical device is using in real time. I connected a current sensor to the NodeMCU ESP8266 and used the KiwisIoT platform to view the readings online. The sensor measures the current flowing through the device, and the NodeMCU sends the collected data to the cloud through Wi-Fi. This project helped me understand how IoT can be used for real-time electrical monitoring and can be extended to identify unusual power consumption and improve energy management.

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Code

Untitled file

#include <KiwisIoT.h>

const char* ssid = "wifi name";              // Replace with your WiFi name
const char* pass = "wifi password";          // Replace with your WiFi password
const char* topic = "dash_1790138701162";    // Replace with your dashboard topic ID

#define CURRENT_PIN A0

KiwisIoT kiwisiot(ssid, pass, topic);

void setup() {
  Serial.begin(115200);
  delay(1000);

  kiwisiot.begin();

  Serial.println();
  Serial.println("Current Sensor Started");
}

void loop() {
  kiwisiot.run();

  // Read current sensor analog value
  int sensorValue = analogRead(CURRENT_PIN);

  Serial.print("Current Sensor Value: ");
  Serial.println(sensorValue);

  // Send data to KiwisIoT Channel 1
  kiwisiot.send("1", sensorValue);

  delay(2000);
}

Credits

YUVAN SRI S

20 projects • 1 follower

Current Sensor Integration with the KiwisIoT Platform