How straight forward would it be to send values between a pc and multiple arduino pro micros

[hallowed31]

@tapyourashley

i have been led to believe that there are a few methods through witch 2 arduinos can communicate through there pins and that you can send values from a pc, to a arduino through there usb port.

Sure. Have you managed to get one Arduino which is NOT connected to your PC connected to another Arduino which IS connected to your PC using Tx to Rx and Rx to Tx (and connecting ground to ground of the two Arduinos)?

Here is a great tutorial that should help get you started. It's fire, trust me - it works if you read and follow it closely.

Serial Input Basics - updated

Updated Version Please note that this is a revised version of the advice in this earlier Thread which has become very long. As far as possible I have kept the code examples identical or simplifed them slightly. It should not be necessary to refer to the older Thread, but feel free to do so. Contents The following sections are in this Tutorial Introduction Serial data is slow by Arduino standards Example 1 - Receiving single characters Why code is organized into functions Exampl…

As for the USBHost on the Pro Micro, I can't say as I have never tried it.

One note; however, on the immortal tutorial of @Robin2 . The examples use a baud of 9600

Serial.begin(9600);

and I imagine that decision was made to make the tutorial appeal to the broadest audience possible. You should be using

Serial.begin(115200);

if the Pro Micro supports it (I didn't double check - that's up to you but I imagine it's fine).