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Products

TM1637

Connecting TM1637 4x7 Segment Display to Arduino

http://tronixstuff.com/2014/12/01/tutorial-using-ds1307-and-ds3231-real-time-clock-modules-with-arduino/

DS3231

Setting Time for first usage

DS3231 RTC Clock Using Non-Rechargeable Batteries

http://www.raspberrypi-spy.co.uk/2015/05/adding-a-ds3231-real-time-clock-to-the-raspberry-pi/
http://woodsgood.ca/projects/2014/10/21/the-right-rtc-battery/

DS3231 RTC Clock with Display

http://www.instructables.com/id/Real-time-clock-using-DS3231-EASY/step3/The-code/

Library

http://www.rinkydinkelectronics.com/library.php?id=73

HC-SR04

HC-SR04 UltraSonic Distance Sensor with TM1637 Display

https://codebender.cc/sketch:212841#Distance%20Sensor%20TM1637.ino

Library

http://playground.arduino.cc/Code/NewPing

MQ-2 Gas Sensor

MQ-135

If you're using the sensor for the first time, it's a good practice to leave it powered on for about 24 hours before getting a good read. Don't skip this step.
then comes the calibration process. just calibrate it to get about 100-150 from analogRead in a good air condition.
normal air returns ~100-150
alcohol returns ~700
lighter gas returns ~750+

DS18B20

http://www.tweaking4all.com/hardware/arduino/arduino-ds18b20-temperature-sensor/

JHD162A LCD

https://www.rastating.com/using-a-jhd162a-lcd-screen-with-an-arduino-uno/
http://www.circuitstoday.com/interfacing-lcd-to-arduino

Pin 1 to GND
Pin 2 to 5v
Pin 3 to center pin of 10k ohm Pot(103), One leg to +VCC & other to GND
Pin 4 to Arduino pin 12
Pin 5 to GND
Pin 6 to Arduino pin 11
Pin 11 to Arduino pin 5
Pin 12 to Arduino pin 4
Pin 13 to Arduino pin 3
Pin 14 to Arduino pin 2
Pin 15 to 5v through a 220 ohm resistor
Pin 16 to GND

PIR Sensor

http://www.instructables.com/id/Arduino-Basics-PIR-Sensor/?ALLSTEPS

My Projects

Time and Gas Sensor with Display

Time and Gas Sensor Display

Misc

Versatile Kitchen Timer

Kitchen Versatile Timer

Game of Thrones

http://www.instructables.com/id/Game-Of-Thrones-Theme-on-Arduino/?ALLSTEPS

Led Cube 3x3x3

http://circuitdigest.com/microcontroller-projects/making-3X3X3-led-cube-with-arduino

Reed Switch

http://www.electroschematics.com/9328/arduino-security-alarm-reed-switch/

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