Jarek – ForbiddenBit

Arduino Projects

Arduino Music

13/11/202026/12/2020 Jarek 0 Comments

What is an Arudino buzzer? An arduino buzzer is also called a piezo buzzer.

Arduino Projects

iR Car Control Arduino

03/07/202006/10/2020 Jarek 0 Comments

The car is controlled by a remote control with four buttons: front, back, left and right,

Arduino Tutorials

DS18B20 Arduino Example

01/07/202006/10/2020 Jarek 0 Comments

DS18B20 is 1-Wire digital temperature sensor from Maxim IC. Reports degrees in Celsius from -55 to 125 ( /-0.5). Each

Electronics

NE555 Projects

16/06/202006/10/2020 Jarek 0 Comments

Traffic Light NE555: Flashing Railroad Lights: NE555 LED FLASHER NE555 Monostable NE555 Astable

Arduino Projects

Propeller Led Clock Arduino

31/05/202006/10/2020 Jarek 0 Comments

POV clock, consists of: Arduino nano, 8 LEDs and A3144 hall sensor. Arduino, based on information

Electronics

Levitron

23/05/202006/10/2020 Jarek

So the idea of device is very simple, the electromagnet lift into the air a piece of magnet.When current

Arduino Projects

MultiMeter Arduino nano and OLED i2c 0.96″

23/05/202006/10/2020 Jarek

Hi, every electronics needs a multimeter, you can buy it or make it yourself at home. Today I will show

Arduino Projects

Tachometer / RPM Measure

23/05/202006/10/2020 Jarek 0 Comments

List Elements: Arduino Nano Display old i2c 0.96″ Hall Effect Sensor A3144 BreadBoard Wires

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

Adafruit_SSD1306 display(4);

float value=0;
float rev=0;
int rpm,count=0;
int oldtime=0;
int time;

void isr() //interrupt service routine
{
rev++;
count++;
}

void setup() {

display.begin(SSD1306_SWITCHCAPVCC,0x3C);

display.clearDisplay();
attachInterrupt(0,isr,RISING);  //attaching the interrupt

}

void loop() {

delay(1000);
detachInterrupt(0);           //detaches the interrupt
time=millis()-oldtime;        //finds the time 
rpm=(rev/time)*60000;         //calculates rpm
oldtime=millis();             //saves the current time
rev=0;

attachInterrupt(0,isr,RISING);


  
display.clearDisplay();
display.setTextSize(2);
display.setCursor(0,0);
display.println("COUNT");
display.setCursor(70,0);
display.println(count);
display.setTextSize(3);
display.setTextColor(WHITE); 
display.setCursor(34,20);
display.println("RPM:");
display.setTextSize(2);
display.setCursor(40,48);
display.println(rpm);
display.display();


}

#include <SPI.h>

#include <Wire.h>

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>

Adafruit_SSD1306 display(4);

float value=0;

float rev=0;

int rpm,count=0;

int oldtime=0;

int time;

void isr() //interrupt service routine

{

rev++;

count++;

}

void setup() {

display.begin(SSD1306_SWITCHCAPVCC,0x3C);

display.clearDisplay();

attachInterrupt(0,isr,RISING); //attaching the interrupt

}

void loop() {

delay(1000);

detachInterrupt(0); //detaches the interrupt

time=millis()-oldtime; //finds the time

rpm=(rev/time)*60000; //calculates rpm

oldtime=millis(); //saves the current time

rev=0;

attachInterrupt(0,isr,RISING);

display.clearDisplay();

display.setTextSize(2);

display.setCursor(0,0);

display.println("COUNT");

display.setCursor(70,0);

display.println(count);

display.setTextSize(3);

display.setTextColor(WHITE);

display.setCursor(34,20);

display.println("RPM:");

display.setTextSize(2);

display.setCursor(40,48);

display.println(rpm);

display.display();

}

Arduino Tutorials

A3144 Hall Effect Sensor

23/05/202006/10/2020 Jarek a3144, hall sensor

A Hall effect sensor is a device that is used to measure the magnitude

ESP8266

Covid-19 Tracker

28/04/202006/10/2020 Jarek 0 Comments

You don’t have to watch TV to know what the situation is in your country. In

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