We used two of our boards to communicate between the serial ports of our computers. We used this raspberrypi4dummies tutorial we uploaded the individual master and slave code to each individual boards then and connected the A4 and A5 ports and the 5V and ground between the two boards. When we typed in "H" in the serial moniter, we got the message "yo, what's up?" and when we typed "L" we got "cool, cool"
I have never done anything like this before and it was the hardest week yet. As such I decided to do the simplest design using the I2C Master Reader/ Slave Sender in arduino using this tutorial . What I learned is that the I2C synchronous serial protocol is a multi-master, multi-slave bus that allows microcontrollers to communicate information. To do this through arduino, the Wire Library must be downloaded. The first microcontroller, the master, is programmed to request and read data sent from the second microcontroller, called the slave. Once this information has been read, we can see it in the master serial monitor. Here are the steps I took: