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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@user111703
When use function atob ('base64_text') then result not matched to binary data. For example first bytes of TLS key is 0x30, 0x82, 0x03... is "MIID...", but Espruino decode this string start from 0x00.