338 results found displaying 79-81
    
stephenhobbs
 USA
Exercise bike for power Printer Friendly Version
This idea targets two problems: energy conservation & costs and obesity. Have a recumbent bike that the employee pedals during the day. Pedaling is connected to a generator and the expended energy powers the user's computers, peripherals, cell phone, etc. Store excess energy in a battery.
Problem solved: Employers reduce energy consumption, thereby reducing energy costs while employees lose weight and get in shape. Excess energy is stored for future use in a battery. Battery owners could sell their batteries of stored energy.
Reward: Design/build and let's market it to make money. 

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30°

    
nphawat
 Lebanon
Remote Controlled Door (RCD) Printer Friendly Version
Parts of this idea are being used for other purpose but here it is.
Suppose you are in you bedroom or working on something interesting and you don't want to be interrupted when suddenly someone knocks on your door.
The idea is to build or assemble from already present device a transmitter and reciever than can control the lock in the door thru a powerful magnet coil (or an alreday present mechanism can be found i the market-by mechanism i do mean the hole door mechanism).
The block diagram or sequence goes like this.
1)transmitter
2)reciever
3)switch (could be a sucession of a transistor and a timer to make sure the signal is present for enough time)
4)12v, 9v, 6v realy to control the coil mounted on the door or the door mechanism it self.
5)... (if any other steps required).
Apart from the bedroom door the device can be used mounted on any door whether the main gates or any another (don't know if the wireless accessed car work following the same or similar principle).
Reward: a prototype of the device would be given to the most helpful prs, post, comment(s). 

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19°

    
thinktankak
 USA
Stress O-Meter Ring Printer Friendly Version
Imagine a ring that could [u]extremely[/u] accurately measure a persons stress, and display it by changing colors (Black= super stressed, green= moderately stressed, blue= no stress). Now, when a friend is stressed out, you know to tread carefully before they blow up and when your friend has no stress you can smack some jokes around. Now wouldn't that be something!
Reward: A couple of these. 

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40°

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