Tuesday, March 13, 2012 by skemarangkaian
This circuit Can be Used to Measure distance covered by bicycle using a reed switch as the sensor and use the magnet tied to a wheel. Detection of rolling is then made by a proximity effect, Pls the magnet close to the reed switch. This close / open reed switch contact Can use to make on-off signal. 68HC908QY4 microcontroller function for counting the pulse signal Produced by reed switches, and then Direct display in meter unit through lcd 16 x 1 line LCD
Software for write to68HC908QY4 microcontroller is s-record.hex ,which was written by C-language ,the source code is firmware source code.