Quozl's Open Source

Linux Speedometer, Odometer, and Trip Computer

PIC Microcontrollers Electronics Linux C Programming
Implemented on a 386/25 8Mb DECpc laptop, this Linux application attaches to a PIC 16F84 microcontroller which is then attached to a vehicle speed sensor. The program displays current speed, distance travelled, and allows the marking of waypoints and the calculation of distance to the next town.

Update: adjustments for higher sampling rates, and a schematic contributed by a reader.

(19 October 2001)