Once you've uploaded the correct code to your arduino as described in Setting Up the Arduino, and you've uploaded code to your Tiny that contains some serial output, and wired everything together:.

This simple Arduino project aims to display constant values on the screen at specific intervals through the serial monitor without requiring user input. Every second, constant integer values are ...

CGA monitors may not be an amazing technological advance these days, but they can generally be found very cheaply. Additionally, they have a DB-9 connector and work off of TTL ranges (0-5VDC) makin… ...