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converting code from String to char arrays - alternative for String(integer)? - Programming Questions - Arduino Forum
Drop arduino String class at the FirebaseArduino layer. · Issue #117 · FirebaseExtended/firebase-arduino · GitHub
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Use a function to return a string, then print this return value in the void loop - Programming Questions - Arduino Forum
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The SafeString alternative to Arduino Strings for Beginners Safe, Robust, Debuggable replacement String class for Arduino
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