date-created: '2018-10-04'
date-updated: '2025-11-28'
manifest-author:
    name: Appropedia
    email: admin@appropedia.org
title: 'Open Source Low-Cost Power Monitoring System'
description: 'This study presents an entirely open-source, low-cost power monitoring system capable of many types of measurements including both loads and supplies such as solar photovoltaic systems. In addition, the system can be fabricated using only open source software and hardware. The design revolves around the Digital Universal Energy Logger (DUEL) Node, which is responsible for reading and properly scaling the voltage and current of a particular load, and then serializing it via an on-board ATTiny85 chip. The configuration of the DUEL node allows for custom sensitivity ranges, and can handle up to 50 A and 300V. Up to 127 DUEL nodes communicate via Inter-Integrated Circuit (I2C) on a bus, which can be monitored and logged through an Arduino UNO, or other compatible microcontroller. Using accessible equipment, the DUEL node can be calibrated to a desirable accuracy with low error.'
keywords: 'open source hardware, open hardware, RepRap, OpenSCAD, customization, open science hardware, OScH, free and open-source hardware, FOSH, free and open-source software, custom designs, P2P, P2P manufacturing, open design, scientific equipment, open scientific hardware, circuit milling, circuit design, distributed manufacturing, electronics, electronics prototyping, System monitoring, Data logger, Power monitoring, Photovoltaic, Systems monitoring, Power, Current, Voltage, Building monitoring, Building energy, Green building, Building systems, Home energy monitor, Renewable energy, Energy, Electrical engineering, Engineering'
project-link: 'https://www.appropedia.org/Open_Source_Low-Cost_Power_Monitoring_System'
contact:
    name: U
    social:
        platform: Appropedia
        user-handle: U
version: 27
development-stage: D
made: false
image: 'https://www.appropedia.org/w/images/f/fa/Osenergymon.jpg'
license:
    documentation: C
licensor:
    name: U
    affliation: C
    contact: 'https://www.appropedia.org/U'
documentation-home: 'https://www.appropedia.org/Open_Source_Low-Cost_Power_Monitoring_System'
documentation-language: e