In order to round of floating-point numbers when printing to the Serial Monitor, you can just add the number of decimal places required as the second argument to serial.print. The Arduino Serial Monitor function can display serial data sent from Arduino. See this answer for a better explanation.

The precision of float is not decreased in the way you think it decreases. Para mais informaes sobre a assincronicidade de Serial.print(), veja a seo Notas e Advertncias da pgina de referncia da funo Serial.write(). float num 7.875 Serial.println (num, 4) will print num with 4 decimal digits, thus: 7.8750. Desde a verso 1.0 da IDE do Arduino, a trasmisso serial assncrona. Println float arduino How to print Integer alongside String Arduino - Stack Overflow My SAB Showing in a different state Local Search Forum SoftwareSerial.

Several times, we are just interested in the first couple of decimal digits, and the remaining digits just reduce the readability and make the Serial Monitor window cluttered. print() statements to print the text and values you want to see. Floats are similarly printed as ASCII digits, defaulting to two decimal places. 1 Serial.print(val, format) Parameters val: the value to print. By default, Serial.print () prints floats with two decimal digits.

Often some functions can output really long floating-point numbers, with several decimal digits.

Serial print arduino float