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Build vibroinsects using discarded mice (Go Team Mouse!)
Written by Administrator   
Friday, 01 July 2011 00:00

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(If you like my instructable, please vote for me. Thanks!) As I promised in my last instructable (http://www.instructables.com/id/Ideas-for-discarded-mice-reuse-GO-TEAM-MOUSE/ ), I will show you how to make insects reusing damaged mice. But they won't be only insects. They will be vibroinsects!!...
By: M.C. Langer


MATERIALS:

1 mouse (I use a wireless mouse for saving the AA batteries holder)
1 electric motor (from a toy car it's all right)
1 joystick eccentric weight (the thing that makes the joystick to vibre)
6 car wiper pieces, 4 for the legs and 2 for the arms (replacement: 6 legs from 3D glasses)
10 frame iron pieces
4 iron angles
1 Switch
1 AA 2 batteries holder (if you don't have a wireless mouse)
2 AA batteries
wire
1 deodorant cap
screws and bolts
Tin soldering
Superglue

For the lower body I used an aluminum piece from an alarm, but you can replace it with some plastic container.
For the neck I used an iron piece found in the street. The head is an industrial piece foun in a junkyard. You can replace it even with a Lego block.


TOOLS

Dremel Rotary Tool
tweezers
screwdivers
scalpel
pliers
Wire cutters
Screwdriver kit
Soldering Iron


And don't forget the classic building rules:

1. If you don't have it, replace it!
2. Use protective equipment (dust mask and goggles)
3. Beware of drilled and soldered hot surfaces
4. Work in a good ventilated area.
5. Always have junk in stock
6. Enjoy!

via: instructables.

Last Updated on Tuesday, 18 October 2011 20:17
 
EM-15 Coil Gun
Written by admin   
Friday, 01 July 2011 00:00

Authors: admin

coil

The description, design and construction of this handheld coil gun rifle are capable of launching a 0.30 caliber metallic projectile at adjustable velocities. This gun is a handheld, battery powered and while it is electronic circuit consists of a voltage step-up transformer converter. Its components are barrel, breech loading mechanism, battery supply, capacitor ...

Read more: http://www.hackolog.com/2011/06/13/em-15-coil-gun/

Last Updated on Friday, 01 July 2011 00:54
 
DIY Guitar Pickup
Written by Administrator   
Friday, 01 July 2011 00:00

This week I built small single coil guitar pickup to demonstrate the way they work by induction. This was a really fun project because I ended up also building a simple one string guitar! There’s a lot of info on the internet about building your own pickups. This one is very easy to build with common parts. All that you need is a magnet and some magnet wire!

A guitar pickup is a simple inductor. At it’s center is a magnet and around it are windings of copper “magnet wire”. Magnet wire is simply copper wire with an enamel coating which serves as an insulator. The pickup is mounted under the steel guitar string so that when the string vibrates, it alters the magnetic flux thus creating a voltage.

A pickup is essentially a generator or dynamo. A generator is defined as “The production of an electrical potential difference (or voltage) across a conductor situated in a changing magnetic flux”. The copper wire serves as the conductor with the change in flux generated by the wire vibrating in proximity to the coil.

A pickup has an inductance measured in “Henries”. One henry is the amount of inductance that is required to generate one volt of induced voltage when the current is changing at the rate of one ampere per second. Two other characteristics of a pickups are a resistance measured in ohms and a “distributed” capacitance which is in parallel with the inductance of the coil.

The combination of these three factors – an electrical circuit comprising an inductor and a capacitor connected in parallel, with a resistor in series – is effectively a tuned circuit with a well defined resonant frequency. Most pickups exhibit a peak frequency between 2K and 8K depending on the type.

These are really fun to build so I encourage you to give it a go and experiment!

Keep on hackin…. :)


via:hackaweek

Last Updated on Friday, 01 July 2011 00:35
 
iPhone tilt motion controller
Written by admin   
Thursday, 30 June 2011 00:00

Authors: admin


This project is a mounting system that adds mechanical tilt control to the iPhone. The unit uses two servo motors to move the iphone on the X and Y axis. The system is controlled by an analog joystick and an Arduino board. It can be used to play accelerometer-based games on the iphone. 

iPhone tilt motion controller - [via]
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Last Updated on Thursday, 30 June 2011 00:58
 
Brute-force safe-cracking bot
Written by Administrator   
Thursday, 30 June 2011 00:00

safe

Traditional safes have many protection layers against thieves. Two very curious MIT students made an automatic dialer that is possible to open a safe. The method is simple: Brute-force the combination, which means that the bot dials "random" codes, until the correct one is found. It is designed to crack the combination on a Sargent and Greenleaf 8500 lock. The code entering system is as follows: First, turns the dial 4 revolutions to the first number, then three revolutions to the second and then two revolutions to the final number. Then, one revolution to zero, press the dial inwards and finally rotate the dial to 85. For a human to brute-force codes this would require up to 20 hours, but the makers believe that the bot can break in in a few hours. Read more here.

Read more: http://pcbheaven.com/opendir/index.php?show=2139ds2690qsd3a18d61

Last Updated on Thursday, 30 June 2011 02:14
 
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