----- Original Message ----- From: Short, Evan Subject: [EE]: Accelerometer brakelight (was Modulating a headlight) > 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. An old classmate of mine built such a similar product, but rather than show you the acceleration it flashed. He didn't say what was involved in designing it. I haven't heard from him since last December though. Jeff -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body