Is it normal for the tachometer to show 1 when parked?
1 Answers
It is normal for the tachometer to show 1 when parked. Here is some additional information: 1. How the tachometer works: It processes the received digital pulse signals (sent by the sensor) and directly reads them into the CPU's counting port. The software then calculates the speed and the corresponding position of the pointer, which is then amplified through the CPU's control port to drive the stepper motor to rotate in positive and negative directions, indicating the corresponding speed value (the pointer is directly installed on the rotating shaft of the stepper motor). Each step of the stepper motor is only 1/3 degree. 2. Advantages of the tachometer: Large static torque makes the pointer less prone to shaking, and it has strong anti-vibration performance. The use of a single-chip microprocessor through software design ensures high precision and strong anti-interference capability. The hour meter uses LCD display, with no mechanical parts, making it more reliable and modern.