Allegro A4988 and Arduino (3)
In the last part of my tutorial about the A4988 driver, I’m going to explain how to build a controller to adjust speed and rotation direction of a stepper motor.
In the last part of my tutorial about the A4988 driver, I’m going to explain how to build a controller to adjust speed and rotation direction of a stepper motor.
After having learned how a stepper motor works and after having introduced the Polulu driver, based on Allegro’s A4988 IC, it’s now time to move the stepper with Arduino!
In some of my projects, I used a driver based on Allegro A4988 IC to control stepper motors. This tutorial, divided in three posts, will show you how to use that controller with Arduino.
When I post my sketches, I often receive questions about the reason why I define state constants and, more generally, about the meaning of a finite-state machine. In this tutorial you’ll learn how to use that model to create a simple timer.
In this tutorial, I’m going to show how to develop a small website that gets data from Arduino (using your ethernet shield), stores it and displays it on a chart.
Today’s example is about a request I received from Francesco: how to choose the text to be shown on the display using a couple of buttons.
Some readers wrote me asking more “real” examples using this display… in this post I’ll write a sketch to use it as a thermometer.
When you want to make Arduino “talk” on your network, you usually choose the HTTP protocol, that allows to use a web browser (IE, Firefox…) as a client. Sometimes however you need Arduino to send data to other applications: in this case you can implement a socket connection.
Today’s tutorial is about getting an accurate time via Internet, using the NTP (Network Time Protocol) service.
Today I’m going to show you an unusual way to send SMS from Arduino…