I wandered slightly off topic for a bit but now back on the path to the ultimate Infur-O-Tron (from infuriating)

It seams that anything you care to devise has already been constructed by someone else for some other purpose. For example, [1] this unit, correctly connected up could give hours of enjoyment to an engineer with all the possibilities of the data gathered and then the fun of generating feedback circuits, to then give hours of joy to the user, taking them to the brink and dangling them over by an ever so fine, yet perfectly proportioned, thread. Assuming the engineer has done their maths correctly correctly, the hours could become an indefinite thrill ride.

Something else to knock up in an odd moment and then try and find someone to test it.

Also in the vein of the last post, gyros and accelerometers are cheap and small now, how about a unit that only works if your standing on your head, or vibrates with acceleration, or if you turn round. or only works if you reach a threshold of acceleration.

Or for those of you on the look out for random systems, how about a little sensory fusion with all these sensors, one big algorithm to give an out put and then depending on where you are, the ambient light, you blood oxygen level, heart rate, radio signals in the area, temperature, galvanic skin condition, acceleration, ambient noise and rotation, you get a different response. so standing in one place you could get pulses of vibration with your heart beat, in another place it could be light levels turning it on and off and the proximity of a mobile phone that modulates it or it could go off when some one talks to you. Oh for the beautiful maths that could do all that. And the ability to write it to a uC. And the equipement to turn it into reality.

one can but dream….