IoTaWatt – an open, WiFi enabled energy monitor #ESP8266

IoTaWatt is an open-source, open hardware project to produce an accurate, inexpensive and easy to use energy monitor. It can use any of dozens of common current transformers and will report the data locally via integrated web server, or upload to any of several third-party energy websites/databases. Configuration and administration is through an easy to use browser based utility running on a computer, tablet or smartphone.

About the IoTaWatt Project

The project grew from an informal effort to produce a versatile electric power meter that was easier to configure and use. Employing the popular and powerful ESP8266 nodeMCU chip, it has an operating environment with a modular approach to data collection, storage, and reporting along with an integrated WiFi web-server. The resulting firmware, after more than a year of development, is very robust.

Early efforts concentrated on using available kit boards and shields with a minimum of custom hardware. Eventually, it became obvious that a single custom board was needed to provide the platform necessary for the software to be useful. The current open-hardware design is commercially produced.

Although the schematics and PCB layout are open and available in the project Git, there is a lot more to making a viable commercial product. IoTaWatt, Inc. is a legal entity that was established in response to demand for production hardware. The basic device, as well as related equipment, can be purchased by using the “Buy” tab above. The costs to develop and certify the hardware were substantial and hopefully will be offset by sales.

Read more on the web site here and on GitHub.


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