Greetings, from the interest generated from this thread, i found out from the web the following : http://www.analog.com/publications/magazines/accel_news/issue6/5.html them product is out there :) best wishes, ckchan "James Newton. Admin 3" wrote: > That is a really good point about breaking without the breaks and if I were > still... err... young enough? to ride, I would be begging for your design so > I could build one and were I not an embedded engineer, I would want to buy > one. You should consider producing and selling that unit. > > One other comment, for any young riders, based on personal experience: What > Evan says about good helmet and leather can not be overstressed. Denim, > cotton, etc... are like tissue paper when they rub on the road. Leather can > prevent road rash. Wearing a car instead of riding a bike can prevent lots > of other injuries. > > James Newton, PICList Admin #3 > mailto:jamesnewton@piclist.com > 1-619-652-0593 phone > http://www.piclist.com > > ----- Original Message ----- > From: Short, Evan > To: > Sent: Tuesday, July 03, 2001 01:44 > Subject: [EE]: Accelerometer brakelight (was Modulating a headlight) > > All this talk of increasing visibility has suddenly become of more interest > to me, given that I'm recovering from an argument with a Land Rover which > turned across my path (Oh, I didn't see you) in traffic. Turns out that my > motorcyle and I weigh a lot less than a Land Rover. Only a mind hand > fracture, thanks to a good helmet, good jacket, leather pants etc... Getting > to the point, though, I'll be looking into a headlight modulator, evidently > having your highbeams on during the day doesn't cut it with Italian drivers > - I don't know if they're legal in Italy but I think I'd rather risk the > ticket from the usually absent local police than another encounter with a > Land Rover. > Ironically, I had already modified my bike to make me more visible from > behind - I built a brakelight which activates a row of high intensity LEDs - > more LEDs for heavier deceleration. I've always thought that this was > important on a motorbike, as you can be decelerating quite heavily from > engine braking alone before you touch the brakes. Using an accelerometer, > the drivers behind get a warning before your main brake light comes on. I > used a PIC, naturally, a 12C series reading the digital output of an Analog > Devices surface mount accelerometer and controlling the lights. > I'd be interested in knowing if anyone else has done a similar project. > > Keep the rubber side down, > > Evan. > > ==================== > Evan Short > Ingegnere Elettronico - FERRARI S.p.A. GES > v. Ascari 55/57 41053 Maranello (MO) ITALY > Tel. +39 (0536) 949.616 FAX +39 (0536) 949.377 > mailto:eshort@ferrari.it > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.