user68412: I am using different codes which set different values of baud rate through the Serial.begin() function.
I have an Uno using Serial.begin(9600) connected to an ESP8266 ESP-01 module
SoftwareSerial WiFiBoard(2, 3);
WiFiBoard.begin(115200)

Both of them are printing and reading from Serial, but when I use Arduino IDE Serial Monitor, I'm only able to display the content of the 9600... Am I missing a setting somewhere?
Also, when I configure both of them to use the baud rate 9600, I still only see the Uno information

user4143: Your computer can not see what is going over the WiFiBoard serial connection because that connection has nothing at all to do with the connection to your computer.
If you want your computer to see what is being received on that port you must read the data from that port then send it to your computer.
It doesn't (much) matter about the difference in baud rates (only that if one sends too much data too fast for the other to forward it you will lose some data).
It's common to use something like:
while (WiFiBoard.available()) {
    Serial.write(WiFiBoard.read());
}

That will forward anything received from the WiFi board over the serial port to the computer.

68412: <p>I am using different codes which set different values of baud rate through the <code>Serial.begin()</code> function.</p>
<p>I have an Uno using <code>Serial.begin(9600)</code> connected to an ESP8266 ESP-01 module</p>
<pre><code>SoftwareSerial WiFiBoard(2, 3);
WiFiBoard.begin(115200)
</code></pre>
<p>Both of them are printing and reading from Serial, but when I use Arduino IDE Serial Monitor, I'm only able to display the content of the <code>9600</code>... Am I missing a setting somewhere?</p>
<p>Also, when I configure both of them to use the baud rate <code>9600</code>, I still only see the Uno information</p>
 4143: <p>Your computer can not see what is going over the WiFiBoard serial connection because that connection has nothing at all to do with the connection to your computer.</p>
<p>If you want your computer to see what is being received on that port you must read the data from that port then send it to your computer.</p>
<p>It doesn't (much) matter about the difference in baud rates (only that if one sends too much data too fast for the other to forward it you will lose some data).</p>
<p>It's common to use something like:</p>
<pre><code>while (WiFiBoard.available()) {
    Serial.write(WiFiBoard.read());
}
</code></pre>
<p>That will forward anything received from the WiFi board over the serial port to the computer.</p>
