Abstract: A pedometer for detecting vibrations in a direction of motion is disclosed. The architecture of the device includes a main body, a vibration detector, and a counting circuit. The counting circuit is connected to the vibration detector and the counting circuit and vibration detector are installed inside the main body. Since the vibration detector is disposed orthogonal to the direction of motion, the vibration detector is able to detect the smallest vibration in the direction of motion and outputs a pulse signal to the counting circuit. The counting circuit includes a signal amplifier circuit, a signal detection circuit, and a processor. This pedometer is capable of picking up weak vibration signals to take an accurate count of the jogger's pace.