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So, we would then declare these variables the suitable type and then read them in using the corresponding commands.Īlso, remember when you are going to read data from the serial port you must do three things: 1) Prompt the user for data, 2) wait for him to input the data, and 3) read the data. In this case we should use a float, since we want the decimal numbers. we might want to say that someone was 5.5 feet tall. On height, we would not normally round to the nearest foot. To store the weight, we would just about always round to the nearest whole number so it would make sense to use an Int for this. For the person’s name, you naturally would use a String, since a name is a string of text. In order to do this the first thing we must do is decide what type of variables to use for each of these three pieces of data. Then print out a nicely formatted output that relays that information back to the user. Write a program that will promt the user for his age, for how much he weighs, and then how tall he is in feet. The easiest way to read a Float is with the Serial.parseFloat() command and the easiest way to read in Int with with the Serial.parseInt() command. The easiest way to read a string of text is using the Serial.readString() command.
#SERIAL READ ARDUINO CODE HOW TO#
So, you need to know how to read these three data types over the serial port. Usually you can make just about any project work with Strings, Float’s, or Int’s. Almost all possible needs can be covered by three simple data types. In order to read data over the serial port, you first have to determine what type of data you will be expecting. While we touched on this briefly in earlier videos, it is such an important topic I want to focus on it in this lesson. There are many difficult and complicated ways you can read data over the serial port, but luckily there is an easy way. There are lots of Arduino tutorials that make it much harder than it has to be. One of my biggest frustrations in programming is the confusion over inputting data over the serial port.