Arduino Internet voltage monitoring can be achieved in several ways. The Arduino can be set up as a client or a server in order to display measured voltage on a web page. In this article an Arduino is set up as web server that hosts a web page stored on SD card. The web page displays the voltage measured on Arduino analog pin A2 in near real-time. The web server also interacts with ThingSpeak, a Internet of Things (IoT) service which logs voltage over time. Voltage is displayed on the hosted web page on a gauge and in a ThingSpeak generated graph or chart.
How Arduino Internet Voltage Monitoring Works in this Project
Voltage Update Timing
Tutorial for the Project and Other Resources
Learn how ThingSpeak works and how to set up a channel to send data from an Arduino to an account on the ThingSpeak server — ThingSpeak is a free service.
Learn about measuring voltage with Arduino.
Arduino Ethernet shield tutorial explains how to set up an Arduino and Ethernet shield as a web server.