There's a bicycle race in town that a friend of mine is competing in, a fundraiser, and for my contribution I want to build something for the race. A radar speed sensor that will post the speeds on a 7 segment LED display down the straight stretch.
The specs for the radar speed sensor that I am ordering are here: http://www.stalkerradar.com/stalker-speed-sensor/stationary-speed-sensor/Stationary Speed Sensor specification.pdf
It sends the speed data out as serial data. I've never played with sending or receiving serial data before, and I just have a few simple questions before I start off.
Is the serial data from the speed sensor as simple as sending a number 0-255, which is then converted to 0-200MPH? I'm thinking that it must not be that simple, but I'm unsure. I want to use KPH, so the range for that is 0-321, which would mean I would have have a resolution less than 1KPH, which is fine, it just leads me to believe it must be more complicated than that.
Why would this unit even have a MPH or KPH setting? wouldn't the serial data all just be the same raw numbers that you convert within the the unit receiving the information? I don't even know how you would change these settings, there's no information on how that is done. I know I should probably be asking the manufacturer these questions, and I will, just thought I would put them up here too.
Thanks for all the help.
The specs for the radar speed sensor that I am ordering are here: http://www.stalkerradar.com/stalker-speed-sensor/stationary-speed-sensor/Stationary Speed Sensor specification.pdf
It sends the speed data out as serial data. I've never played with sending or receiving serial data before, and I just have a few simple questions before I start off.
Is the serial data from the speed sensor as simple as sending a number 0-255, which is then converted to 0-200MPH? I'm thinking that it must not be that simple, but I'm unsure. I want to use KPH, so the range for that is 0-321, which would mean I would have have a resolution less than 1KPH, which is fine, it just leads me to believe it must be more complicated than that.
Why would this unit even have a MPH or KPH setting? wouldn't the serial data all just be the same raw numbers that you convert within the the unit receiving the information? I don't even know how you would change these settings, there's no information on how that is done. I know I should probably be asking the manufacturer these questions, and I will, just thought I would put them up here too.
Thanks for all the help.