Arduino Expert

How to make a LED cube 4*4*4 with Arduino   Contents-: Arduino (mini,mega etc any board can be used) 2. LED bulb 3mm - 64pcs (take 70 instead) 3.Jumper wires 4. PCB  5.Header Pins(around 20pcs) 6.Resistors 100 ohm -4pcs 7.Soldering iron and wire Make the LED Zig:- Downlod this PHOTO and print it and then paste it to a cardboard or a wooden board ,then make holes on the circles with a drill. Make the LED structure:- Just place the led bulbs in the holes of the wooden board and solder them ,here the arrow in the photo denotes the NEGATIVE terminal of the led bulb which will not be folded Now fold all the POSITIVE terminals as according to the photo(Red arrow marked is positive) then solder them. Repeat this step 4 times then place the layers one above the other and solder all the NEGATIVE terminals of all the four layers. And you are DONE!! Your Led structure is ready Connections-: ...

How to create a automatic lighting system with Arduino Contents:- 1. Arduino Uno 2.LCD display 16*2 3. PIR motion sensor 4. 5V Relay 5. lithium ion battrery or any battery whuch give 5v 6.In place of battery you can also use 12v adapter,which i had used in this project       Connections:- 1. See from the code Working Mechanism:- Fit this box on the wall at height of 6 ft approx  when someone enters the door PIR value becomes HIGH and the condition becomes true which signals the arduino to turn the relay to LOW which makes the light on. Code to upload:- const int ledPin = 13; int RELAY = 8; int PIR=9; // output of pir sensor #include <LiquidCrystal.h> // includes the LiquidCrystal Library  LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)  void setup() { Serial.begin(9600); pinMode(RELAY, OUTPUT); pinMode(PIR, IN...