Summary of Domotic Arduino
This project demonstrates how to control an electric roller shutter using an Arduino Uno, turning it into a simple home automation device. It employs an infrared sensor setup to count roller shutter holes and determine its position, allowing the shutter to move up or down with button presses and stop appropriately. The system includes safety features like optoisolators and uses relays to control the motor. Future expansions envision a centralized Arduino managing multiple shutters with customizable scenes. The project is ideal for beginners seeking practical Arduino and electronics experience.
Parts used in the Electric Roller Shutter Control Project:
- Arduino Uno
- Infrared diode (38 kHz)
- Infrared receiver TSOP1138
- NE555 timer IC (configured as astable multivibrator)
- Two 14V relays
- Two 2N1711 transistors
- Two diodes
- Two optoisolators
- 12V power supply
- Two LAN cables (for connections)
- Push buttons (Up and Down)
In this introduction I will show you a overview of this project whit Arduino Uno. The purpose of this instructable is move a electric roller shutter by Arduino Uno. The prototype that I made is my first electronic project with Arduino and I hope this instructable and the solutions that I found are useful for your own Arduino’s and electronics projects. My aim was to transform a simple electric roller shutter in a domotic roller shutter; also, a possible development, could be a complex domotic system for a house: a central microcontroller (another Arduino) that control all electric roller shutters connected to it whit the possibility to create for example some scenes. This project is limited only to realize a prototype and after so many years I wanted to return to build electronic circuits.
Features:
– Move the roller shutter when push the button
– Stop the roller shutter when it is completely open or closed
– Stop the roller shutter when push the button up while it’s moving down
– Stop the roller shutter when push the button down while it’s moving up
Operation principle
Arduino counts the holes on the roller shutter with the infrared receiver; the infrared diode is positioned on the other side of the roller shutter. When the hole is aligned with them, Arduino increment or decrement a counter to determinate the position of the roller shutter. To connect the actuators and the sensor to Arduino I used two LAN cables (see last step)
Step 1: Scheme
Scheme.zip98 KBStep 2: Software
I hope comments are exhaustive:
// costants:
const int sm = 2; // moviment sensor
const int buttonPin_t3 = 5; // button up
const int buttonPin_t2 = 4; // button down
const int ledPin = 13; // LED for check buttons
const int d1 = 11; // motor UP
const int d0 = 12; // motor DOWN
// variables
int ContatoreSensoreMovimento = 0; // counter move sensor
int Contatore_t3_t2 = 0;
int RegistroOutputd1 = 0;
int RegistroOutputd0 = 0;
For more detail: Domotic Arduino
