hello, I'm about to buy this, it helps me to detect the speed of a bicycle?
How far that I can detect speed bicycle?
Hello,
No problem it will work, and for a much higher speed than you can go with a bicycle 
Don't forget that you have to solidly attach a magnet to the wheel. I recommend that you buy something like this:
or
Search "sigma magnet" on ebay
guix:
Hello,No problem it will work, and for a much higher speed than you can go with a bicycle
Don't forget that you have to solidly attach a magnet to the wheel. I recommend that you buy something like this:
Search "sigma magnet" on ebay
maximum speed that you can achieve with this sensor?
I'm really not sure about the max frequency of these kind of sensors (nothing about it in the datasheet), but it's probably much more than you need.
Can someone correct me if I'm wrong