Dear, please someone help me, when i send a one byte from my serial port (USB) to Uno Arduino then i read it again by using (Serial.read) or (Serial.parseint) i got the mentioned byte but i receive unwanted 0 sequentially after the sent byte as well as i checked all items (Cable, baud rate , USB po…

Which version of Arduino software you use? Insert minimum code in order other can test. I mostly using interrupts when receiving data and hardware serial communication worked fine.

If you're using the serial monitor to send, did you check you have line end set to No Line ending? [line end and baud.GIF]

Dear, please i need a help with using serial monitor, when i send a byte from Laptop to a UNO arduino it wil send 2 bytes ( the byte that i sent followed by number 0) as well as i checked all connections and i used all USB ports for several baud rates then i got the same issues, please your advice. …

Please, post your codes and have a look on the structure of Serial Monitor (Fig-1) of Arduino IDE. [SerialMonitor.png] Figure-1: [SerialMonitor.png]

Problem with Serial Monitor

Projects Programming

RudolfAtRTC December 3, 2019, 3:38pm 3

Without your sketch you will get no serious help!

Topic		Replies	Views
Serial monitor won't show IDE 2.x	4	127	June 22, 2026
Serial monitor either not outputting anything or outputting gibberish IDE 2.x	4	1130	June 4, 2025
Use Serial.parseInt() to send a integer but arduino reads a 0 after my input in Monitor Programming	5	5257	May 11, 2021
Arduino Uno Wifi Rev2: Serial monitor UNO WiFi Rev2	12	622	August 28, 2024
Serial wont read UTF-8 Programming	9	588	March 3, 2025

Problem with Serial Monitor

Related topics