I am trying to capture 4 ultrasonic distance sensor values as float values and transmit them through wire to an Arduino Mega. I used I2C but I could only transmit 1 float value instead of 4. I am trying to understand how to communicate the data between the 2 Arduinos through the serial ports, but I cannot figure out the code. I don't know if I should make an array of 4 float values, and how I should communicate that array to the Arduino Mega. I am looking for virtually no time delay for this method. Can you please help me figure out how to write the code to transmit 4 float values between 2 Arduinos? Also I don't know if it matters but right now I have the I2C setup as the Mega is the master and is requesting data from the Uno, the slave.