and on the other hand, if it isn’t, in the failure mode it needs to cut off hot before it gets outside of the wall-mounted box.
Where do you do the test? what is the length of the loop that it tests? on the one hand, it needs to know that the ground gets all the way to the chassis. Posted in Transportation Hacks Tagged arduino, car, charging, electric vehicle, ev, high voltage, IoT, nano, network, Nissan Leaf, web app Post navigation If you don’t need all of the features that this charging station has, though, you can always hack the car itself to add some more advanced charging features. While we would advise using extreme caution when dealing with mains voltage and when interfacing with a high-ticket item like an EV, at first blush the build looks like it has crossed all its Ts and might even make a good prototype for a production unit in the future. The project is based around an Arduino Nano 33 IoT with all of the code available on the project’s GitHub page. It is able to monitor the car’s charge state and other information over the communications bus to the vehicle, and even has a front-end web app for monitoring and controlling the device. It can tell the car to charge at different rates, and can restrict it to charging at different times (if energy is cheaper at night, for example).
This charging station has every available feature, too. This project comes to us from who needed this level of control over charging his Leaf, and who also has the skills to implement it from the large high voltage switching contactors to the software running its network connectivity and web app. Sure, there are plenty of charging stations on the market, but they all have different features, capabilities, and even ports, so to really make sure that full control is maintained over charging a car’s batteries it might be necessary to reach into the parts bin and pull out a trusty Arduino. Electric vehicles are becoming more and more common on the road, but when they’re parked in the driveway or garage there are still some kinks to work out when getting them charged up.
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