With the Mouse library, an Arduino Leonardo, Micro, or Due can manipulate the onscreen cursor of a computer. This specific instance involves the use of five pushbuttons to control the movement of the cursor on the screen. Four buttons control direction (up, down, left, right) and one activates a left mouse click. Cursor movement on […]
Alexa controlled timers at a glimpse. A really fancy egg-timer with added temperature control. Story Idea Both of us like to tinker with electronics and the latest hard- and software. While most projects never get out of “early-Alpha”, we wanted to create something with a prototype look&feel for quite a while now. Participating in The
LED displays are commonly packaged as arrays of LEDs organized in rows with shared positive terminals and columns with shared negative terminals, or vice versa. Here is a standard illustration, along with its diagram: These exhibits can be very useful. To control a matrix, you connect its rows and columns to your microcontroller. The columns
Arduino Row-column Scanning to control an 8×8 LED Matrix Code Continue Reading
Arduino Knight Rider light effect, a simple variation of blink code. Parts List; 1) 5x 5mm red LED 2) 1x Arduino 3) 5x 330Ω resistor 4) Jumper wire Instruction; 1) Connect all LED as diagram below, make sure cathode lead of LED at ground wire. 2) Connect all 330Ω resistor to anode lead of
The Ping))) is an ultrasonic range finder from Parallax. It detects the distance of the closest object in front of the sensor (from 2 cm up to 3m). It works by sending out a burst of ultrasound and listening for the echo when it bounces off of an object. The Arduino board sends a short
This example illustrates the use of the Mouse and keyboard libraries together. Five momentary switches act as directional buttons for your cursor. When a button is pressed, the cursor on your screen will move, and a keypress will be sent to the computer. Once you have the Leonardo programmed and wired up, open up your
Using the Mouse library, you can controls a computer’s onscreen cursor with an Arduino Leonardo, Micro, or Due. This particular example uses a pushbutton to turn on and off mouse control with a joystick. Cursor movement from the Arduino is always relative. So every time the analog input is read, the cursor’s position is updated
Arduino can send output through serial communication to your computer over USB. The output can be anything such as status, text, sensor reading, value, number etc. You can view the status output by clicking Serial Monitor button at Arduino Environment software. Instruction; 1) Connect your arduino to your computer using USB cable A plug to
Rotary Encoder Tutorial with Arduino Code int pulses, A_SIG=0, B_SIG=1; void setup(){ attachInterrupt(0, A_RISE, RISING); attachInterrupt(1, B_RISE, RISING); Serial.begin(115200); }//setup void loop(){ } void A_RISE(){ detachInterrupt(0); A_SIG=1; if(B_SIG==0) pulses++;//moving forward if(B_SIG==1) pulses–;//moving reverse Serial.println(pulses); attachInterrupt(0, A_FALL, FALLING); } void A_FALL(){ detachInterrupt(0); A_SIG=0; For more detail: Rotary Encoder Video Tutorial with Arduino Code
Rotary Encoder Video Tutorial with Arduino Code Continue Reading
The String case change functions allow you to change the case of a String. They work just as their names imply. toUpperCase() changes the whole string to upper case characters, and toLowerCase() changes the whole String to lower case characters. Only the characters A to Z or a to z are affected. Circuit There is
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