# Arduino filling the serial Buffer with nulls

**URL:** <https://discourse.processing.org/t/arduino-filling-the-serial-buffer-with-nulls/38674>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [September 7, 2022, 7:39pm UTC](https://discourse.processing.org/t/arduino-filling-the-serial-buffer-with-nulls/38674 "2022-09-07T19:39:23Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [September 8, 2022, 10:37am UTC](https://discourse.processing.org/t/arduino-filling-the-serial-buffer-with-nulls/38674/8 "2022-09-08T10:37:48Z")

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Hello @maro,

That visual helps to see the output.

Arduino Uno genuine or clone? We had issues with some clones one year…

I have experienced “garbage” in the buffers in the past:

> [@Problem with the use of several sensors, Arduino / Processing](https://discourse.processing.org/t/problem-with-the-use-of-several-sensors-arduino-processing/18118/5):
>
> Hello, Some code I wrote to explore Arduino transmitting data to Processing. It runs fine at a BAUD rate of 1000000. slight_smile I use an Arduino MEGA 2560 R3. 
> 
> > **Arduino Code**
> >
> > // Serial Incoming Test (Arduino Tx) // v1.0.0 // GLV 2020-02-29 long count; void setup() { //Serial.begin(9600); Serial.begin(1000000); delay(1000); Serial.print('\n'); //same as Serial.println() Serial.print("incoming"); Serial.print('\n'); //same as Serial.println() } void loop() …

I will explore this further when I have time… 12 hr days for me this time of year.

`:)`

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