SparseArray is an experimental library to implement a one dimensional sparse array of floats (a.k.a. vector) on an Arduino. A sparse array is an array with mostly zeros and a low percentage non-zero ...

In the previous chapter, we learned how to use the for loop to repeat the same process a set number of times. This time, we will use an **array**, which allows us to group multiple values together.

To be truthful, this project started on a whim. The question was: how can a MC74HC14A Hex Schmitt-Trigger Inverter be combined with an Arduino to do something? This is the result. Of course, the ...

Using the cheap HC-SR04 ultrasonic sensor and an Arduino nano we can build a low cost sensor array for robotics. The Arduino code will poll all the sensors and send byte packets via serial interface ...