April 7th, 2021—
Sebastian Dehne decided to build a custom electric vehicle (EV) charging station for his Nissan Leaf from scratch, as what he calls “a real full stack project.” He notes that creating your own gives you total control over the system, and it’s both fun and cheaper than purchasing a ready-made device.
The aptly named DehneEVSE is based on an Arduino Nano 33 IoT for control and current/voltage sensing, and connects via WiFi to a server that handles charging logic. UI consists of a web app that uses WebSockets to listen for real-time updates and display power consumption for all three phases. Aside from the stats, the app enables Dehne to turn charging on/off or to a low-cost setting, which regulates charge depending on the price of energy at a particular time.
A short demo of the DehneEVSE can be seen in the video below, while more details on the station including links to the files and code are available in Dehne’s blog post.
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