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.
Allegro A4988 and Arduino (2)
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!
Arduino Yún
During the annual The state of Arduino presentation, Massimo Banzi has announced the new Arduino Yún, a device that combine an Arduino Leonardo with a system-on-chip by Atheros that runs a Linux distribution designed for embedded devices, named Linino: If you read my tutorials about how to connect Arduino to the Internet, you probably noticed that the Atmel microcontroller has some…
Allegro A4988 and Arduino (1)
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.
Finite-state machine and 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.
enc28J60 and Arduino (14)
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.
Led matrix with HT1632C controller (7)
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.
Led matrix with HT1632C controller (6)
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.
LCD keypad shield
A couple of days ago I brought an LCD keypad shield for Arduino. This shield, available on many Internet stores and on eBay, has an alphanumeric 16×2 LCD (16 chars for 2 rows) and a small keypad with 5 buttons, labeled UP/DOWN/LEFT/RIGHT e SELECT. This shield is perfect if you want to add a menu to your…
Arduino to C# using socket
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.