Looking for a unique gift that sparks creativity, encourages hands-on learning, and brings a whole lot of fun? Look no further than the 3D printing pen! This innovative gadget is like a magic wand for artists, engineers, and dreamers of all ages. Whether your child is sketching 3D masterpieces or […]
Yearly Archives: 2025
7 posts
Items Needed: Video: Code: //Simon says in LEDS. The game here ra7 betdawe leds w ba3den l player bado y3idoun.int buttonPins [] ={2,3,4,5,6};int ledPins [] = {7,8,9,10,11};int numberButtons = 5;int roundCounter = 0;int roundLedCounter = 3;unsigned long roundDuration = 10000; // 10 seconds la kel roundint BoardLEDS [50];int userBoardLEDS[50];int resetButtonPin […]
Items Needed: Code: #include "LCD.h"#include <LiquidCrystal_I2C.h>#define I2C_ADDR 0x27 // <<----- Add your address here. Find it from I2C Scanner#define BACKLIGHT_PIN 3#define En_pin 2#define Rw_pin 1#define Rs_pin 0#define D4_pin 4#define D5_pin 5#define D6_pin 6#define D7_pin 7LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); lcd.begin(20,4); lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE); […]
Items Needed: Code: #include <FastLED.h>#define LED_PIN 7#define NUM_LEDS 30#define T1 10 // pin 10 is trigger for sensor 1#define E1 9 //// pin 9 is echo for sensor 1int val=0;CRGB leds[NUM_LEDS];long DistanceSensor (int, int); //trigger echovoid setup() {//delay(10000);Serial.begin(9600); pinMode(E1, INPUT); //echo sensor 1 pinMode(T1, OUTPUT); //trigger sensor 1 FastLED.addLeds<WS2812, LED_PIN, […]
Code #include <SoftwareSerial.h>#include "LCD.h"#include <LiquidCrystal_I2C.h>#define I2C_ADDR 0x27 // <<----- Add your address here. Find it from I2C Scanner#define BACKLIGHT_PIN 3#define En_pin 2#define Rw_pin 1#define Rs_pin 0#define D4_pin 4#define D5_pin 5#define D6_pin 6#define D7_pin 7LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);SoftwareSerial sonarSerial(10, 11); // RX, TX - connect sensor TX to pin 10void setup() { lcd.begin(20,4); […]
This project showcases a simple logic-based Light and Movement Detector built using only analog and digital non-programmable components: the LM741 operational amplifier, 74HCT04 inverter, and 74HC368 tri-state inverter. The circuit is designed to turn ON a LED only when movement is detected in the dark. If there is ambient light, […]