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Nerf Gun Hack – Secure Area and Fire on Intruders – Part 2

This is part 2 of the Nerf Gun hack, you can see part 1 of the project here. Last time some wiring was done to allow us to remotely control the three internal motors. This time the control wires are connected to a simple circuit that uses two darlington transistors to spin up and fire the gun. A 16f88 PIC microcontroller is being used to monitor an IR beam and fire the unit when the beam has been broken. The IR beam consists of an Infrared LED and an Infrared Transistor. To determine when the beam is broken an analog reading is taken by the PIC when the IR LED is off and again when the IR LED is turned on. The difference is used to determine the state of the beam, if the difference is small the beam is not broken and if the value is large we know something is blocking the beam. When the beam is broken the controller turns on the first darlington transistor to spin up the rotating motors, then a short time later the second darlington is activated which fires the dart into the spinning wheels.

Name the Thing Contest – 133

Thanks to Protostack for sponsoring the contest this week. They will be providing a ATMEGA168 Development Kit and a USBASP AVR Programmer to the winner. The development kit contains everything you need to start building ATMEGA168 circuits. The AVR programmer is based on the Thomas Fischl’s USBasp design and connects to your computer’s USB port. The USB interface is achieved by using an atmega processor and the rest is done in firmware.  Shipping is often an issue, many companies charge more for the shipping than the parts cost. That is not the case at ProtoStack, their shipping is only $5.00 for worldwide shipping!

Thanks to Csaba for the interesting picture of the thing to guess this week. I think this will be a tough one.

This contest will run for one week (May 29 – June 4, 2009) . Ending time is based on central standard time. To enter, identify the item pictured above and give an example of what can be done with it.

Please do not give the answer in the comments.

Send an email to contest @ hackedgadgets.com with “Name the Thing Contest” as the subject, and the message body consisting of:

• The name of the item in the above picture
• An example of what the item pictured above can be used for

The winner will be chosen at random from all of the correct entries.

Below are some pictures of the prize.

Nightclub City // Items Cheats

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Credits: zcmiko@pwnthis

Seems like some of you guys missed out on the previous Billions coins cheat on Nightclub City, so for those who wants to own all those 5million dollars decors, just follow the steps and be on your way to the king of nightclubs.

Tools (download these tools in the Tools section):

• cheat engine
• firefox

Steps:

1. Go to Nightclub city. [click to play]
2. As an example, buy 4 tablebars,place it inside your inventory.
3. In cheatengine, scan ’4′ in 4bytes. Now you’ll see a couple of addresses.
4. Now place 1 bar back in your club. Now there’s 3 bars.
5. Go back to cheat engine and scan ’3′ in 4bytes.
6. If there’s still couple of addresses,put 1 tablebar back in your club. Now you have ’2′ tablebars left in your inventory.
7. Go back to cheat engine and scan ’2′. (This time,im sure 1 address will be left, else repeat till only 1 left!)
8. Double click on the address and edit the value of the address to 99.
9. Remove the last tablebar and you’ll notice that you have 99 tablebars now.
10. Sell all the bars until there’s only 1 left. 
11. Then go back to cheatengine and edit the value again to 99. And sell it again if you want cash.

You can do this in any items you want.

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