for example, here is some code and the result that gets printed: float val 23.459 Serial.println (val) Serial.println (val, 4) Serial.println (val, 10) 23.46. Regular print without the number of digits specified will default to 2 decimal places. Ive been printing a combination of strings and numbers with Arduinos Serial.println() like: Serial. Serial. This will print out any number of digits after the decimal place. Serial.println(analogValue, HEX) // print as an ASCII-encoded hexadecimal Serial.println(analogValue, DEC) // print as an ASCII-encoded decimal Serial.println(analogValue) // print as an ASCII-encoded decimal Serial.print and printf, Solved in Arduino IDE and ESP.You’d like to be able to print values from inside strings, similar to printf. For example- Serial.print (78) gives '78' Serial.print (1.23456) gives '1.23' Serial.print ('N') gives 'N' Serial.print ('Hello world.') gives 'Hello world. Wait for a USB serial connection for up to 30 seconds Floats are similarly printed as ASCII digits, defaulting to two decimal places. Make sure your Serial Terminal app is closed before powering your device Int analogValue = 0 // variable to hold the analog value Floats are similarly printed as ASCII digits, defaulting to two decimal places. Numbers are printed using an ASCII character for each digit. reads an analog input on analog in A0, prints the value out. Serial.print () Prints data to the serial port as human-readable ASCII text. Println() returns the number of bytes written, though reading that number is optional - size_t (long) // EXAMPLE format: specifies the number base (for integral data types) or number of decimal places (for floating point types).val: the value to print - any data type.This command takes the same forms as Serial.print(). Prints data to the serial port as human-readable ASCII text followed by a carriage return character (ASCII 13, or '\r') and a newline character (ASCII 10, or '\n'). Serial.println, println, Serial1.println, println
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