Increasing Arduino Uno baud rate to 200000

Projects General Guidance
1

For my project I need to increase the baud rate of the Arduino uno as much as possible. So far it works fine upto 115200 but when I try to increase it beyond that, the app itself crashes and I have to Ctrl alt delete my way out of it. Here is my code:
int sensor_output=A1;
int val=0;
void setup()
{

//pinMode(sensor_output,INPUT);
Serial.begin(115200);

}

void loop()
{

val=analogRead(sensor_output);
Serial.println(val);
//delay(500);

}

Can someone please tell me what is stopping me from getting higher baud rates/how to get higher baud rates please?
Thanks!

2

What is on the other end of the connection?

I regularly use 500,000 baud with my Arduinos connected to Python programs or the Minicom terminal program on my PC. There is a table of baud rates and their error percentages in the Atmega 328 datasheet. It could be that 250,000 works better than 200,000

...R

3

The other end is MAX446 microphone. I'll try it with 25000 as well. Is it because the serial monitor in the IDE only goes upto 115200 baud rate?

4

Atomicflea:
but when I try to increase it beyond that, the app itself crashes and I have to Ctrl alt delete my way out of it.

So you are saying that the PC crashes, not the Arduino?

5

Atomicflea:
The other end is MAX446 microphone. I'll try it with 25000 as well. Is it because the serial monitor in the IDE only goes upto 115200 baud rate?

Screenshot from 2019-10-06 11-51-37.png

Screenshot from 2019-10-06 11-51-37.png

6

Failure to slide (or wheel) the slider down? :cold_sweat:

7

Atomicflea:
The other end is MAX446 microphone. I'll try it with 25000 as well. Is it because the serial monitor in the IDE only goes upto 115200 baud rate?

That does not make sense.

You can't have the serial monitor and a microphone connected to the serial port at the same time.

...R