detect vehicle speed

Projects General Guidance
1

hey everyone ,I'm new I would like to know is there anyone know how to detect car speed ,with easy component because I'm tight budget now ,since I bought the ublox gps module not working ...is there anyone can help me and guide me I only left 3 day to complete this project

2

ahhow93:
hey everyone ,I'm new I would like to know is there anyone know how to detect car speed ,with easy component because I'm tight budget now ,since I bought the ublox gps module not working ...is there anyone can help me and guide me I only left 3 day to complete this project

Why is your "ublox gps module not working"?

Did you destroy it?

A GPS module would be the simplest solution if the car is driving outdoors, where GPS signals can be received.

If you did only indoor testing with your GPS module, it is not working, because indoors there will be no reception for GPS signals (except perhaps near a south facing window when living in Northern latitudes, if you are lucky).

3

jurs:
(except perhaps near a south facing window when living in Northern latitudes, if you are lucky).

Not quite so. It's a Global Positioning System. The satellites are in a mesh of sorts, all around us, not like TV satellites (in geostationary orbit around the equator.)

See "space segment" at Global Positioning System - Wikipedia and, especially, the animated GIF there.

Depending on a number of factors, the quality of the receiver perhaps the greatest, reception may not be had in the house, but not for lack of southern exposure north of the equator.

4

i tried to do outside but the GPS not working .... i dont know the coding i think no problem ... i changed the baud rate to 9600....

5

ahhow93:
i tried to do outside but the GPS not working .... i dont know the coding i think no problem ... i changed the baud rate to 9600....

9600 Baud should be correct for Ublox-6 GPS modules.

Which GPS module are you using? Link?
Which Arduino board are you using?
Does your Arduino board have at least two(!) or more hardware serial ports, like MEGA2560?
Or are you trying to use "SoftwareSerial" for serial emulation in software?
Which is the cabling?
Which sketch are you using for testing?

Ublox-6 boards should have a LED that signals the GPS status: I think the LED starts a 1 second blinking if the module itself has a GPS fixing from at least 3 GPS satellites.