Understanding Serial.available () - Programming - Arduino Forum
May 7, 2018 · Serial.available () can return -1 if no data available and values from 0 to 255. Question 1:When it can return 0? Question2: We are checking if serial available for exanple …
Serial.Read and Serial.available difference - Arduino Forum
Feb 2, 2022 · Serial.available is used to check if there is anything available to be read. Serial.read reads the next byte, or returns -1 if there is nothing available. Normally you would code as …
Serial.available () useful? - Programming - Arduino Forum
Dec 4, 2021 · Is there a processing overhead with Serial.read () compared with Serial.available ()? I ask because @potzli 's second method always calls Serial.read () regardless of whether …
while (!Serial.available ()) - Programming - Arduino Forum
Apr 5, 2017 · Hi I use while (!Serial.available ()) to wait for serial input at the start of a sketch. So I can configure all my stuff before I hit the key and start the program I would like to do this in the …
Serial.available & read doing two different things on ... - Arduino …
Oct 11, 2018 · Robin2's Serial Input Basics was good intro on communicating with the Arduino, but one thing that I'm still confused about is the Serial.available() and read() functions. Like the …
Serial.read () and Serial.available () are working not ... - Arduino …
Nov 16, 2021 · I would stay on the line, what in0 mentioned Serial.read () and Serial.available () are working not as expected in the code - #14 by in0 . It must be some weird bug with Serial …
Serial.Available () doesn't work. - Programming - Arduino Forum
May 20, 2017 · Topic Replies Views Activity Using the serial port of the arduino pro mini with c# Programming 12 2418 May 5, 2021 Problem with the Serial Commands Programming 17 2676 …
Issue with Serial.available - Programming - Arduino Forum
Nov 30, 2022 · I have a strange problem with the Serial.avialable() call. I am using an arduino Leonardo to control a motorized lens focusing system. I have a custom application running on …
Serial.available () and Serial.read () to control LED - Arduino Forum
Oct 4, 2018 · does anyone can help me with my code? i want to control a LED by sending a character '5' from the serial monitor to turn it on flashing light, until i send another character …
How do Serial.available () and Serial.read work? - Arduino Forum
May 29, 2012 · Hey everyone, I am curious as to how Serial.available and Serial.Read work. If I was to create a loop that was kinda like this: void loop(){ int var = Serial.read(); //then do …