Finally the battery completely died at a ripe old age of 6 months. I would continue to get at least a flat battery on a monthly basis despite the servicing dealer claiming the battery was fine. I hope that by sharing my work you will find the same fascination and inspiration that I did.I had a BM2 monitor on my Kona EV after the battery went flat within the 1st month of new ownership. My forum post is here - and I think it serves as a great snapshot in time of the work that went into this project, along with discussions around the theory, design choices, and problems that came up in the process. After months of prototyping, tweaking, and massive amounts of learning, I have something I feel comfortable about sharing. What was initially a distant and challenging goal of mine at the beginning of 2020 turned into a seemingly huge undertaking that I didn't quite expect. I, too, had questions to ask throughout the project, and I was fortunate to stumble upon the OpenEnergyMonitor forum where I received guidance and support from generous electrical engineers. I was not impressed by any of the commercially available systems' "bang for the buck", and my searches for DIY projects found unanswered question after unanswered question. I wanted something I could watch in real time and see the effects of turning on various appliances/systems. First and foremost, the current data sources I have access to through my local energy utility company and solar PV inverter is not real time. I created this project for several reasons. The rest of the Introduction is not vitally important. (The sidebar on this page is for reference only and is in no particular order).įeel free to jump right in to the Getting Started section linked above. You can reference the steps in the following order to setup v0.2.0 of this project. If you are looking for documentation for v0.2.0 instead, this Wiki is it. Quick Start / Setup Guide Current documentation has been moved to Github Pages for a better experience! Any processes outlined in this project are taken at your own risk and I cannot be held liable for personal injury or property damage. I would recommend hiring a licensed electrician to install the CTs on your high voltage lines. This project (indirectly) interfaces with high voltage electrical systems and discusses working in and around a main electrical panel. Before proposing a quick-start path through this project, a disclaimer is required: Throughout the Wiki, there are discussions of electrical theory, optional suggestions, and important requirements that must be followed. This Wiki serves to document my project in depth so that others can adapt it to meet their own personal needs. I am offering DIY kits, presoldered PCBs, and a variety of current transformers to use with my project. Individual current transformer readings.Total current, voltage, power, and power factor values.The individual readings are then used in calculations to provide real data on consumption and generation, including the following key metrics: This code accompanies DIY circuitry (see the references above) that supports monitoring of up to 6 current transformers and one AC voltage reading. This project is derived from and inspired by the resources located at. The data are stored to a database and displayed in a Grafana dashboard for monitoring and reporting purposes. The Raspberry Pi Power Monitor is a combination of custom hardware and software that will allow you to monitor your unique power situation in real time (<0.5 second intervals), including consumption, generation, and net-production.
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