I'm trying to build a speedometer for my motorcycle using an Arduino and I'm not sure whether to use a reed switch or a Hall sensor. The sensing distance is about 5-10 cm (the distance between the wheel and the sensor / switch). The only sensor I can get is a 3144 one (that's all the information I got about it...)
Is the distance too great for sensing? It only needs to check if the magnet is around the sensor, nothing more.