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.
Linux Speedometer, Odometer, and Trip Computer
PIC Microcontrollers Electronics Linux C Programming
Update: adjustments for higher sampling rates, and a schematic
contributed by a reader.
(19 October 2001)