DIY Android Home Automation Box

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Introduction: DIY Android Home Automation Box

About: Hi I'm Angelo (TechBulder)! I am an engineering major in BS-ECE at the DLSU. I use my course as an inspiration for making my current projects! I've been posting projects here ever since I was 10. I also run a …

Here's a little show and tell of my Android controlled home automation box. It's a small extension box that's controlled by an Android smartphone. You can turn the individual outlets on by tapping a button from the app or use the speech recognition app, found from my previous tutorial. I've teamed up with my friends and built a custom app for out home automation prototype project. My former classmate/ fellow ible member "treyes4" built something similar.

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It's just a prototype so don't expect much from this version. I assure that next version would be explained more thoroughly.

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I'll be gone for a while: I'll be posting a video once I get back from the international trade and business competition hosted by FedEx (school related). I posted this guide early, since the home automation contest deadline is due today. There's a lot of unexplained areas in this guide, without the prior knowledge, this project would be difficult to execute. Just ask questions below, I'll answer them through my phone. Once I get back, I'll edit and update this guide. Sorry for the inconvenience.

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Step 1: Bill of Materials

If your having trouble in finding them, I'm sure RadioShack has all of them. If you want to buy online try searching on Amazon or DealExtreme.

Thing that you'll need:

- Android Phone & App

- Arduino UNO (a clone works fine)

- Low Power/ Switching Power Supply

- Dot Matrix Solderless Breadboard

- HC-05 Serial Bluetooth Module

- 2N3904 NPN Transistor (5x)

- 2.2k Ohm Resistor 1/4 (5x)

- 6V Relays (5x)

- Jumper Cables

Step 2: Find a Good Enclosure

I bought my enclosure from Alexan, a local electronics/ hobby store. This project is a prototype, the perfect enclosure would be an enclosure big enough to house an Arduino prototyping board and a small switching-PSU.

Step 3: Glue the Sockets Together

Align the outlets then use superglue to hold them temporarily. Hot glue can be used to strengthen the bond. After gluing, start to link a common rail. The linked rail work's like a common ground although this is AC ~ so it's not.

Step 4: Align & Measure the Sockets

Align the AC sockets together then acquire the dimensions of the array of sockets.

Step 5: Transfer the Measurements

Transfer your measurements by using a marker and ruler.

Step 6: Grind and Drill the Enclosure

Use your hacksaw or rotary tool to cut off the plastic that you've marked. Use a metal file to even out the edges.

Step 7: Construct the Relay Circuit

I constructed my DIY relay circuit. Obviously this is a complete prototype, I used a perfboard for mounting my components on. This is dangerous, exposed AC line can cause death through electrocution. Before attempting this project, be sure you're qualified to execute the task. My next version in the future would probably include solid state relays mounted on a custom PCB.

Step 8: Wire the PSU

The PSU will serve as your Relay and Arduino's power supply. I bought mine from ebay.

Specs: 12v (1 Amp)

Step 9: Upload the Sketch

/*Paste this on your Arduino's IDE

The BlackBox Arduino Author: Thomas Niccolo Filamor Reyes */ #include

SoftwareSerial mySerial(2, 3); // RX, TX

//these ladies shorten the script #define printer Serial.println #define reader mySerial.read

//fullString from android app //c is for the reader char fString [5], c;

//digital pins, uint8_t/unsigned char //to save memory of 8 bits/1 byte //normally I'd use an int (16 bit/2 byte), //but it limits value from 0 to 255 //no negative values unsigned char digital[5] = {8,9,10,11,12};

//*index of recorded character array uint8_t v = 0;

void setup(){ Serial.begin(9600); mySerial.begin(9600); //scroll through all digital pins listed as output for(uint8_t i=0;i<5;i++) pinMode(digital[i], OUTPUT); } void loop(){ //*index of recorded character array v = 0; //incoming bytes while(mySerial.available()){ //give her some time to recieve delay(10); c = reader(); //stop filling the chararray if # is encountered or // it goes beyond index 4 (5th value) if (c == '~' || v > 4)break; fString[v] = c; //increments index v++; } //if the index is greater than 0... if(v > 1){ printer(fString); //scroll through them for(int i =0; i<5; i++){ //I wish I could use bits instead here... efficiency if(fString[i]=='0') digitalWrite(digital[i], LOW); else digitalWrite(digital[i], HIGH); } } }

Step 10: Install the App

Step 11: Build & Install the Bluetooth Module

Connect the RX to pin #2 and the TX to pin#3

Step 12: Install the Arduino

Wire the Arduino to the other parts

Step 13: Screw the Cover Back on - Enjoy!

Your done, enjoy!

Home Technology Contest

First Prize in the
Home Technology Contest

Remote Control Contest

Participated in the
Remote Control Contest

Epilog Challenge VI

Participated in the
Epilog Challenge VI

1 Person Made This Project!

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63 Comments

0
bushra.moni
bushra.moni

6 years ago on Introduction

i m having a problem..... i have made the circuit nd now i m unable to fine the app to control it with my cell phone .....i donot knw the programing so i jxt copied it for ur link but app...... m jxt trapped plx help me its urgent as i hav to submit my assignment at my college

0
jueljp
jueljp

Reply 6 years ago on Introduction

any difference made to the electronics/coding?

0
johnybody
johnybody

6 years ago on Introduction

Cool. How do you upload the app to your phone? Which software do you use?

0
ASCAS
ASCAS

Reply 6 years ago on Introduction

The downloadable file includes an APK installer. It was programmed by my friend. I'll be updating this guide by adding alternative apps.

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BillyR60
BillyR60

Reply 2 years ago

hola me puede pasar los diagramas de circuito xfavor

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BillyR60
BillyR60

Tip 2 years ago

me puede pasar el diagrama de circuito por favor

0
medgard789
medgard789

3 years ago

Bro powede bang gumamit ng 4 chanel relay module, 4 lang sana gawin ko.

0
DharaniS3
DharaniS3

4 years ago

itd be so good if we can time them on app

0
BrandonW86
BrandonW86

4 years ago

I'll definitely be making this for my shed that'll be going up hopefully next summer. In the mean time, this will be used for some stuff in my house, and as a chance to get my hands dirty on app construction (I'm a software engineer by day).

0
ClintH15
ClintH15

4 years ago

You should update this as you had mentioned.

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JoshB4
JoshB4

4 years ago

Could this be done with Ubuntu Touch instead of Android?

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owiss
owiss

4 years ago

the last image is great ! pravo!

0
dennyzulfikar
dennyzulfikar

4 years ago

you should consider to have some ventilation for your enclosure. AC/DC, both of them are easy to getting hot and melted.

and Fuse, don't miss to install that one.

0
ASCAS
ASCAS

Reply 6 years ago on Introduction

I bought mine from eBay (stated on step #8).

0
Shivam gautam
Shivam gautam

Reply 5 years ago

can you please send me the circuit diagram ......and about psu model...at
sgm1081@gmail.com

0
mlakhwani
mlakhwani

5 years ago

hello, nice project. just few things to confirm:
1) can i use esp8266 to control it over lan ?

2)can i add 8 ch relay ?

thanks

0
mohsint1
mohsint1

5 years ago

bro can u plz upload the sketch that how u connect arduino + bluetooth + relays + PSU?? kindly email me plz... thanks

signorpositive2014@gmail.com