Thanks to Samer Muhi for sending in a video of his latest Quadrotors Wireless Power Transfer project. He is able to power his quadcopter with up to 20watts of energy using resonant inductive coupling. You can see the main coil sitting on the table which is operating at a resonant frequency is 800kHz. On the quadcopter arms you will see the second coil and some circuitry in the board
This Arduino Quadcopter by Kyle Fieldus has iPhone Control, similar to the AR Drone you can tilt the phone to control the quadcopter. Touch OSC is being used to design the phone interface, there is also an Android version available. The system chain is a bit complex since the phone is sending the input data to the computer, the computer determines what should be done on the quadcopter and
When developing a project there will come a time that you will need to communicate with the outside world. Serial communication is often the simplest way to get data in and out but when it comes to wireless, Bluetooth is quickly becoming the way to go. Bluetooth modules are getting quite inexpensive and every smart phone has it built in these days. Techbitar has written a great Instructable that
 Using some guidance from this page, BrittLiv has built one great looking Nerf Vulcan Sentry Gun! The spring has been swapped out to allow for more powerful and higher speed dart. The targeting looks like it is fun since it will track people and actively fire on them unless they are wearing the Instructables logo on their shirt!
We have seen all sorts of flashlights that don’t need batteries, the first style I remember was the squeeze generator type. Then the shake flashlight seemed to be all the rage, they were so popular that there were even a bunch of fake battery operated ones sold. The one thing I have never seen before was a hand heat powered flashlight. Anne, who is a 15 year old from
 Got a cool new project that you would love to use an old Apple IIe keyboard on? Or how about an Apple IIe computer that you want to use a USB keyboard on? If you have some frankenstien ideas like this Charles Mangin has just the thing for you. His RetroConnector keyboard interface for Apple IIe will let you use your USB keyboard by plugging an adapter board
Have you ever wished you had a remote control that could be set to turn off your hotel TV after a predetermined amount of time? This DIY Universal TV Sleep Timer is sure to keep you sane next time you are in a hotel and come across one of those low budget remotes they always have. Nice thing about the code is that you can program your own Arduino
