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If you see the stall protection warning while controlling Sphero RVR in the Edu app, it means that the motors on your RVR have stalled and are momentarily disabled. While this can be bothersome, it is important to resolve whatever causes the eFuse to trip. This means you will keep seeing the eFuse warning popup in the Sphero Edu app until you resolve the fundamental issue. Pro Tip: The eFuse will continually trip as long as the draw is over the current limit. You will have to reconnect to Sphero RVR if you power cycle while connected in the Sphero Edu app. Alternatively, you can also turn RVR off and on (known as power cycling) to reset the eFuse. Press the "Reset eFuse" button on the eFuse warning popup once the current is below the limit. The eFuse will continue to be tripped until the connected peripherals are below the current limit of 2.15A. How do I Fix This?ĭisconnect USB and UART peripherals until the eFuse is no longer being tripped. If the eFuse warning popup appears during a running program in the Sphero Edu app, it will cause the program to stop. The flashing yellow LEDs will stop once the eFuse has been reset. When the eFuse is tripped, you'll notice that the LEDs on RVR flash yellow. This includes draw from both the UART and USB port. The combined current draw from all attached peripherals should be below the limit of 2.15A. If the eFuse is tripped, it means that the UART or USB port is drawing current over the limit or a short has occurred.
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The eFuse is a firmware level software fuse that protects peripherals from drawing current over the limit of 2.15A. If you see the eFuse warning popup in the Sphero Edu app, it means a peripheral connected to the USB port or 4-pin UART port has tripped the RVR eFuse. To learn more about what you can do with the USB/UART ports on your RVR, visit our SDK website.
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These ports allow users to control Sphero RVR in all sorts of interesting ways with external hardware. The documentation below provides details on the cause of these warnings as well as instructions on how to resolve them. In total, there are five unique warnings you may see while using Sphero RVR in the Edu app: While these warnings may look alarming, they provide important information about your RVR's functionality. You may notice a number of warning popups while using the Sphero Edu app with your Sphero RVR. Verifying your Child's Sphero Edu Accountĭownloading Sphero Edu on Microsoft DevicesĬhanging Text-To-Speech Settings for The "Speak" Block Google Sign-In Changes for the macOS and Windows Versions of Sphero Edu (Legacy Issue) Sphero Edu and Location Services for Android and Chromebooks Update: Sphero Compatibility with Chrome OSĬhanging support for Android 5, 6, and 7 in February, 2022Ĭhanges to Community Programs in May 2022 Changing Support for iOS 10 and 11 with Sphero Edu 6.3.0Ĭhanging support for iOS 9 in the Fall of 2020