Onewheel+ XR with a working BMS - Hardware version and firmware version are irrelevant, it just needs to be an XR. Proceed at your own risk.īefore beginning, be sure to have on hand: I don’t mean to dissuade anyone from building a VESC onewheel, but if these sound like risks that you don’t want to take on, this may not be the project for you. But even completely stock XRs and GTs have been reported to cut off during operation, so this risk is probably one you’ve already accepted. At the end of the day, you will need to decide if you accept the risk that at some point your board could shut off while you are riding it. These mitigations don’t completely solve the problems associated with running the stock BMS. I will cover this with my own guide at a later time, but if you are interested in it now, check out this conversation on pev.dev.Ĭheck your wiring harness and other components regularly for damage.Īlways wear a helmet and other safety gear. Install an OWIE chip to monitor the battery cells manually. Lithium batteries are dangerous below freezing, so the BMS can cut power if the battery gets too cold. There are some ways to mitigate the risks associated with this setup:ĭon’t ride in freezing weather. If for any reason you ever want to swap back, you can. The Future Motion controller module is still 100% compatible with the rest of the board. If the board sits idle for ~20 minutes, it will turn off automatically. There are a couple of other added benefits. If your battery cells are unbalanced, your battery could overcharge and catch fire while charging. The BMS provides the critical function of keeping your battery cells balanced. These situations are mostly caused by hardware failure or austere conditions, such as: The BMS has the ability to cut power to the board to protect the battery and in certain situations, this could happen without warning. This particular hardware configuration re-uses the Future Motion BMS. The procedures outlined in this guide aren’t difficult, but they require patience and attention to detail. If you misconfigure something on your board, it could result in a crash involving cuts, scrapes, bruises, broken bones, or possibly even death. If you miswire something, you could start a fire or fry your hardware. And riding a DIY, self-built onewheel? Even more so. It should go without saying, but riding a one-wheeled electronic balance board is dangerous.
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