Khaled wroteI may be mistaken, but that project requires image processing for it needs a camera and an algorithm to track your hand etc. That cannot be done in our level yet. It is a nice project though, but complicated for a first project.
Actually I think the gadget is a bracelet with an EMG (
Electromyography) sensor which detects variations in the forearm muscles, and probably an accelerometer (unless they're counting on the movement of pronator and supinator muscles for the transversal motion of the arm at 00:18 in the video). Each muscle movement causes a certain voltage fluctuation which is registered by the sensor. After associating each movement with a voltage threshold, and assigning each threshold to a task (pause, browse, etc...) in the microprocessor's program (of course after some processing and amplification), wireless signals are transmitted to the computer's antenna (or robot's antenna), and upon reception translated into actions to be executed by the media player on the computer or robot.
Is it complicated to execute? Not really, but you do need to know the voltage levels which correspond to each muscle movement. Is it cheap to implement? If you buy the EMG sensor then no. If you construct your own EMG sensor from shielded snap electrodes from old ECG leads and disposable ECG electrodes (the more common and cheaper option, but the surface area is too large and will gather a lot of noise) or non-shielded metal-concaved cap electrodes like the ones used for EEGs (better for noise reduction and sensitivity, but very hard to find operational old ones; new ones are expensive and come in packs of 10), then yes it's possible to implement the project with a reasonable budget.
