Speedometer Project Help - Electronic Circuits Projects Diagrams Free

ADAM117 · 8th December 2006, 02:45 PM

hi
im completly new to the world of electronic programing and im having to design a digital speedometer using a hall effect sensor and a PIC16F628A chip for my college project. i need to find out a method of been able to program the chip so it compare the time taken for the wheel to turn 1 rev and give out a speed in km on a set of 7 segment display.

any help would be much Appreciated

and get the ball moving on my project once more.

regards

Adam

House0Fwax · 8th December 2006, 03:27 PM

You'd be better off aiming at an LCD. It would not use up so many of the available pins, particularly in 4 bit mode. I got 2 from eBay recently for about £6.

6502Dude · 8th December 2006, 06:00 PM

Quote:

Originally Posted by ADAM117

hi
im completly new to the world of electronic programing and im having to design a digital speedometer using a hall effect sensor and a PIC16F628A chip for my college project. i need to find out a method of been able to program the chip so it compare the time taken for the wheel to turn 1 rev and give out a speed in km on a set of 7 segment display.

any help would be much Appreciated

and get the ball moving on my project once more.

regards

Adam

Here's a start.

Start thinking about sampling rate, display hold time / display refresh rate, & diameter of wheel. You will need some math.

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8th December 2006, 02:45 PM	(permalink)
ADAM117	Speedometer Project Help hi im completly new to the world of electronic programing and im having to design a digital speedometer using a hall effect sensor and a PIC16F628A chip for my college project. i need to find out a method of been able to program the chip so it compare the time taken for the wheel to turn 1 rev and give out a speed in km on a set of 7 segment display. any help would be much Appreciated and get the ball moving on my project once more. regards Adam

8th December 2006, 03:27 PM	(permalink)
House0Fwax	You'd be better off aiming at an LCD. It would not use up so many of the available pins, particularly in 4 bit mode. I got 2 from eBay recently for about £6.