user43034: I apologize if this information could be easily accessed, but I'm new to Arduino and did multiple searches.  I'm currently able to write to one Arduino Trinket in Arduino IDE using digitalWrite. However, I'll have to be reading from two different Arduino Trinkets with analogRead.  An important part of this is that I must be able to access both devices at the same time.  I saw during research that other people were able to use two different Arduino IDE instances, but I don't think this will work for me.  I'll more than likely soon be purchasing 2 Arduino ItsyBitsy's or nano's for the serial USB communication.  Let me know if this would make the issue easier.  I appreciate any help!

user37622: Arduino IDE is editor and builder. Your sketch runs on microcontroller and the microcotroller doesn't need the IDE to run it. The Serial prints from microcontroller go to com port from which any Terminal app can show them, not only the Serial Monitor build-in in IDE.
Connect both arduinos of same type to computer. They will have different ports. Upload your sketch to the first one, then change the port setting in IDE and upload to second arduino.
Serial Monitor can show you the output of arduino connected to the selected port. Switch port in Tools menu and reopen Serial Monitor to see the output of the second arduino.
To display booth at once, there are some options with different difficulty level:

use two instances of a terminal program like PuTTY Terminal Emulator to show the output
connect the TX pins of arduinos together
send data from one arduino to the second and let the second process them


43034: <p>I apologize if this information could be easily accessed, but I'm new to Arduino and did multiple searches.  I'm currently able to write to one Arduino Trinket in Arduino IDE using digitalWrite. However, I'll have to be reading from two different Arduino Trinkets with analogRead.  An important part of this is that I must be able to access both devices at the same time.  I saw during research that other people were able to use two different Arduino IDE instances, but I don't think this will work for me.  I'll more than likely soon be purchasing 2 Arduino ItsyBitsy's or nano's for the serial USB communication.  Let me know if this would make the issue easier.  I appreciate any help!</p>
 37622: <p>Arduino IDE is editor and builder. Your sketch runs on microcontroller and the microcotroller doesn't need the IDE to run it. The Serial prints from microcontroller go to com port from which any Terminal app can show them, not only the Serial Monitor build-in in IDE.</p>

<p>Connect both arduinos of same type to computer. They will have different ports. Upload your sketch to the first one, then change the port setting in IDE and upload to second arduino.</p>

<p>Serial Monitor can show you the output of arduino connected to the selected port. Switch port in Tools menu and reopen Serial Monitor to see the output of the second arduino.</p>

<p>To display booth at once, there are some options with different difficulty level:</p>

<ol>
<li>use two instances of a terminal program like PuTTY Terminal Emulator to show the output</li>
<li>connect the TX pins of arduinos together</li>
<li>send data from one arduino to the second and let the second process them</li>
</ol>
