Speed Sensor Design with A Hall Sensor

Hi, I created a speed sensor design using a hall sensor, magnet and an arduino. I've been looking around the forums for answers but came up half handed with answers. For all those who has some trouble, I have some code up and instructions to getting a speed sensor running. The code so far has some hiccups and is kind of messy but for now it will run the basis through a serial monitor :slight_smile:
http://basicelectronics.x10.mx/?page_id=38

congrats on your project !