Starting A Room Automation System.

Projects Discussion and Showcase Home Automation
1

Well today is the day I'm going to begin building and automation system for my room. I'm going to start by controlling some leds. I have a two pin thermistor and need to know how to use it with the arduino. the thermistor is out of an old power supply. I'm also going to create a gui on the computer to control the stuff manually if needed. I'm going to start purchasing more stuff as soon as possible. I'll keep you guys posted

2

Search the forum for voltage divider - you should find examples you can use to wire up your thermister.

3

ok thanks. here's the code I wrote for controlling the led's over serial.

int incomingByte;

void setup(){
Serial.begin(9600);

pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
}

void loop(){
if (Serial.available() > 0) {
incomingByte = Serial.read();
if (incomingByte == '1') {
digitalWrite(13, HIGH);
}

if (incomingByte == '2') {
digitalWrite(13, LOW);

if (Serial.available() > 0) {
incomingByte = Serial.read();
if (incomingByte == '3') {
digitalWrite(12, HIGH);
}

}

if (incomingByte == '4') {
digitalWrite(12, LOW);

incomingByte = Serial.read();
if (incomingByte =='5'){
digitalWrite(11, HIGH);

}
}

if (incomingByte == '6');
digitalWrite(11, LOW);

if (Serial.available() > 0) {
incomingByte = Serial.read();
if (incomingByte == '7') {
digitalWrite(10, HIGH);

}
}

if (incomingByte =='8');
digitalWrite(10, LOW);

if (Serial.available() > 0) {
incomingByte = Serial.read();
if (incomingByte == '9') {
digitalWrite(9, HIGH);

}
}

if (incomingByte =='10');
digitalWrite(9, LOW);

if (Serial.available() > 0) {
incomingByte = Serial.read();
if (incomingByte == '11') {
digitalWrite(8, HIGH);

}
}

if (incomingByte =='12');
digitalWrite(8, LOW);

}
}
}

4

Dear bdragon123

I'm very interesting in arduino, and I just want to make a little project for the first time in arduino to control a few LED over local network, so
could you help me about:

  1. what kind of arduino that I have to buy and other support thing to make my project run?
  2. could you provide me information likes schematic and codes for my project?

note: I don't know everything about this project and I hope you give me some (hope more) information what kind of knowledge that I have to know . . .
thanks before

5

The code is a bit of a dog's breakfast with too many nested ifs for me to follow. ALso if (incomingByte == '11') doesn't make much sense.

Can we go back to basics?

What exactly is coming down the serial line? ASCII from a human typing on a keyboard, binary from a GUI?

Rob

6

I'm very interesting in arduino, and I just want to make a little project for the first time in arduino to control a few LED over local network, so
could you help me about:

  1. what kind of arduino that I have to buy and other support thing to make my project run?
  2. could you provide me information likes schematic and codes for my project?

A basic starting point for an "ethernet" network would be to purchase an arduino and a wiznet w5100 based ethernet shield.

7

Why w5100 and not a Ethernet shield?

8

He means you should get the official ethernet shield (which is based on the w5100 chip). Some of the other ethernet shields use a different chip and are (arguably) harder to program.