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The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. This was use to enable the actual status of the battery if it is fully charge or empty. The diode is near the battery terminal marked ad D2 this was missing on NanoVNA board you need to add one. The original version of the files can be downloaded here Two steps to enable battery indicator Step 1:Īdd a missing diode on the board of NanoVNA. If you don’t know what you are doing do it at your own risk the software is provided as is.ĭownload the files here. I have converted the hex file to DFU and you may use it to flashed your device. It contains experimental TDR function at this time originally released by edy555 on Github for NanoVNA the firmware release version is 0.2.2 inside the releases folder the files are provided as hex and bin need to be converted in DFU before you can use it in DfuSEdemo software unless you have a programmer for STM32 micro controller. This extends the frequency scanning to 1500Mhz although it may not be fully usable without a hardware upgrade. At the time of this writing there is already a version of firmware that can be flashed on the NanoVNA device to indicate battery status. Most available NanoVNA on the market has a working firmware that works from 50Khz to 900Mhz this version of the firmware doesn’t have the battery status indicator enabled.