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Fonte: Bitwise maths and logic operators Hello, here I’m again, today I will give a small maths lesson, don’t run away, its easy and its very useful for embedded programming, and its also nice to know a bit more about how our little micro-controller works. In fact I will write about bitwise operator and their…

Fonte: direct-port-manipulation-using-the-digital-ports Direct port manipulation, using the digital ports [tutorial part 3] Hello fellow readers, today I will write a bit about the digital pins and how to read and write digital values to then, its a simple subject but of a great importance, because almost everything that our micro-controller does is using its inputs and outputs…

Fonte: PortManipulation Fonte img: atmega-328p-pu-precargado-con-bootloader-para-arduino Port Registers Port registers allow for lower-level and faster manipulation of the i/o pins of the microcontroller on an Arduino board. The chips used on the Arduino board (the ATmega8 and ATmega168) have three ports: B (digital pin 8 to 13) C (analog input pins) D (digital pins 0 to 7)

Fonte: timers-on-the-atmega328 Timers on the ATmega168/328 INTRODUCTION:       The timers are the heart of automation. We have seen in previous chapters how we could take in an input, perform mathematical functions on the data and, perform an action. Timers give us an extra level of control by giving us not only control over what happens but…

Fonte: An tour of the arduino internal Everyone who’s ever played with an Arduino has seen the following sketch: void setup(){ pinMode(13, OUTPUT); } void loop(){ digitalWrite(13, HIGH); delay(500); digitalWrite(13, LOW); delay(500); } It’s the classic physical computing ‘hello world’: blink the onboard LED on and off every 500ms. But how does it really work? How…

Fonte: Secrets of Arduino PWM – Secrets of Arduino PWM – Fast PWM on ATmega328, up to 8MHz Secrets of Arduino PWM Pulse-width modulation (PWM) can be implemented on the Arduino in several ways. This article explains simple PWM techniques, as well as how to use the PWM registers directly for more control over the duty cycle and frequency. This…

Ho comprato dei moduli I2C per display LCD basato sul chip PCF8574T. Una volta assemblato, l’aspetto del display + modulo è molto simile alla Fig. 2. Basta poi collegare i 4 pin laterali ad arduino e il gioco è fatto (almeno la parte elettronica 🙂 ). VCC   ->  5v SCL     ->  A5…