[DIY] MAKE your own Simple LASER alarm

If u r trying to find how to build a LASER ALARM to keep something secure...

HERE IS A SIMPLE GUIDE TO BUILD UR LASER ALARM

What you need :-

1. 2 small project boxes 

2. 1 1000uF 35v Capacitor 

3. 1 5K Variable Resistor 

4. Photocell 

5. IC Board 

6. 9v battery and clip 

7. 1 N3904 Transistor 

8. Toggle switch 

9. Small mirrors 

10. HandiTak 

11. 12v DC Piezo Siren - 102dB 

12. Aixiz 650nm 5mw 12X30mm laser 

13. Aixiz 3.2v AC Adapter

NOW FOLLOW THESE STEPS

Step 1: Build the Circuit :-

Build the circuit based on the diagram. I cut my IC board with a dremel to make it smaller so there was enough room in the box along with the 9 v battery.

Step 2: Install it :-

Install the circuit board and the 9v battery in the hobby box. Line up the photocell at the hole and hot glue everything in place. Also, attach the siren and run the wiring inside the box. Finish your solder connections with the siren.

Step 3: Build the Laser Housing :-

Cut 3 holes in your second hobby box. One for the switch, one for the laser housing and one small one for the wires from the AC Adapter. Run the wires from the AC adapter in the box. Install the swicth and hot glue the laser in place. Wire the positive end of the AC adapter to the red wire from the laser and wire the negative ends of the laser and adapter to the switch.

Step 4: Tweaking:-

Turn on the laser and point it at the photocell box. You will have to adjust the resistor so the photocell is sensitive to the laser pointing at it during the day. At night, when the laserbeam is broken, the siren will sound

Step 5: Mount the laser system:-

Decide where you want your protection, across what doorways and then decide on where you want the laser to plug in and where you want the photocell box to pick up the laser. I used 1" square mirrors (from an arts and crafts store) and HandiTak to mount the mirrors. You could use a more permanent solution for the mirrors. The idea is to angle all the mirrors to the next wall across where you want protection and then have it end up pointing at the photocell.

Now when it gets dark and the laserbeam is broken, the LOUD 102dB siren will wail!

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[DIY] make your own WIFI SPYBOT

For making a wifi spybot the basic process involves stripping the R/C car, plugging in the Barracuda – which bridges the local servo controls with an ethernet connection – and hooking up the wireless router and webcam.  There’s also some fiddling with network settings to be done.

We will be showing you how to build a wifi robot / spybot from scratch. It is a very straight forward project and can easily be handled by a intermediate robot builder. To complete the robot, it will take a couple of hours.

WHAT U NEED FIRST-

1-Rc Car (new or used, choose one that could easily have a Rc servo fitted in the steering system. We got ours from Radio Shack.)

• 1-Barracuda wifi robot controller
• 1-Wifi Router 
• 1-Network Camera
• 2-Ethernet Cables
• 1-5v Regulator for camera
• 2-3 7.2v Rc Batteries (3300mAh or greater recommended)
• Misc wire, solder, tape etc.

NOW follow some steps :-

Step 1: Hacking The Car

To start building your wifi Robot / spybot, gutting of the Rc car is the first step. Take out everything! We got our Rc truck from Radio Shack, but others will work also. We gutted it out and built a roll cage on top. Here is a Picture of the truck gutted and the 3 Rc batteries mounted in the truck.

The two red batteries are to power the main motor and the barracuda wifi controller. While the blue 7.2v battery will power the Linksys router, 5v Regulator for the camera, and the steering servo. Three batteries are not needed, but i just find that it makes the wifi robot / spybot more reliable and allows longer run times. If you opt for two batteries the Linksys router can handle 40v, so you will be fine running it straight off of the two packs. The same with the 5v regulator. Te only problem will be the power for the steering servo, so you will either have to add another 5v regulator and run it off of that or just get a higher amperage 5v Regulator and run the servo and the camera off of it. The latter would be easiest. 

Step 2: Install The Steering Servo

We gutted out the steering box and retro fitted in a standard Rc servo. Other people have used the steering Mechanism that comes with the Rc car, But I wanted true proportional steering.

Step 3: Install The Barracuda wifi robot / spybot controller

(Picture One)
We started this step out by extending the leads coming from the motor by soldering on extra wire we had laying around.

(Picture Two)
Here is a picture of the barracuda wifi robot / spybot controller. This is what we will be using to control our robot.

(Picture Three)
Here is a picture of the yellow lead from the motor connected to the terminal block. You can also see how the batteries are connected in series to power the barracuda wifi robot controller. On the green terminal block is where we connect the servo. The red wire is connected to the third 7.2v batteries ground and the servo's ground. The white wire is the servo's signal wire. The barracuda has two output ports. Each can individually be configured as a digital or analog input, digital output, or an Rc output making the Barracuda very flexible

 Step 4: Power the camera, router and servo

In this step, all we did was take the mating connector that will connect to the batteries connector and solder the power and ground together for the 5v regulator. The power plug for the Linksys and the power wires for the servo. For a more detailed view, check out our Youtube Video.
Here is a picture of the 5v Regulator attached to the rear battery.

 Step 5: connect everything to the router

 Configure your router to have the base Ip Address of 192.168.1.1. The stock Ip Address for the barracuda is 192.168.1.10. The IP can be changed to whatever you want it to be with the configuration program that comes with it. Connect the camera and the Barracuda wifi robot controller to the router using the two Ethernet cables. Configure the camera to have an ip that works with that of the router and barracuda.

Step 6: Power up and go!

The barracuda wifi robot controller comes with a sample program and source code to drive the car. Power the car up,connect to your camera in the browser, run the sample program for the barracuda and start driving! The barracuda also supports use of a PS3 controller plugged into your computer to control it.

SOURCE - instructables

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creating your own update.zip

THE first steps for our development towards the android devices is installing / fashing application to system memory of your device...
... by creating update.zip file..
first of all for this your phone should be rooted..
so lets do it yourself!!

STEP I - For a refference... the first and moat essential part for this is downloading a sample of update.zip from here and then rename it to update.zip
now we have the most essential part...

STEP II - Now copy all the apps that you want to insert in archive and install on the phone to /data/app of rhe update.zip directory
(NOTE:the apps must have .apk extension)

STEP III - If you want to copy the data of the apps, open any root explorer in your device and go to /data/data , then copy the folder(s) of the apps you want and then paste it to /data/data of the update.zip

STEP IV - Now we have all the apps and datas we want
so now go to META-INF/com/google/android/ and
open 'updater-script' with a simple text editor
nd the only thing we have to modify is:-

Code:

set_perm(1000, 1000, 0644, "/data/app/[PACKAGE].apk");
set_perm_recursive(1000, 1000, 0777, 0777, "/data/data/PACKAGE_DATA_FOLDER");
delete("/data/dalvik-cache/data@app@[PACKAGE].apk@classes.dex");

For each app you have to write these lines.
This is
an example if you want to put
ROOT_EXPLORER.APK in the
UPDATE.ZIP:-

Code:

set_perm(1000, 1000, 0644, "/data/app/ROOT_EXPLORER.APK");
set_perm_recursive(1000, 1000, 0777, 0777, "/data/data/ROOT_EXPLORER_DATA_FOLDER");
delete("/data/dalvik-cache/data@app@ROOT EXPLORER@classes.dex");

STEP V - and if you want any app to be deleted from your phone then you have to use these codes:-

Code:

ui_print("| 80%  Installing Applications |");

and

Code:

package_extract_dir("data", "/data");

this line:

Code:

delete("/APK_DIR/APP.APK");

IT'S IMPORTANT TO LEAVE AN EMPTY
LINE AT THE END OF THE SCRIPT,
OTHERWISE THE ZIP WON'T WORK!

thats all but
You can easily find the name of the app going with
Root Explorer to /system/app and searching the same
app.
If you also want to add your modified Apps, you've
to sign them with a simple app: Auto-Sign, putting
them in /auto-sign/update/app and renaming it to
Launcher.apk .
You can download AUTO-SIGN from here
With it you can sign your apks or your zip. So,
finally, when you'll finish your zip, you'll have to
put it in Auto-Sign folder ("/auto-sign").
Then, open Auto-Sign, choose your zip or apk, and
click AUTO-SIGN. It will create a new apk or zip,
name as SIGNED-apk/zip.
Now, you only have to put the update.zip on your sd-
card and flash it! Have fun guys!

for the tutorial to how to flash .zip file in mobile devices click here

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