转速表

A fast and lightweight application for measuring RPM (Rounds per minute) of a rotating or moving object using your phone's proximity sensor.

NOTE :- 1.This application is never intended to substitute real dedicated RPM meters

2.Depending on your phone the maximum RPM measurable by the sensor may vary

3.This application is not designed to measure motion of very high speed objects

4.Your android phone/tablet/device must have a proximity sensor built in for this app to work

How it works :

1. Just start the app and you'll see the dashboard

2. when anything moves over the proximity sensor of your phone (covering & uncovering it) you will immediately see the corresponding RPM value

3. The maximum RPM section shows the maximum RPM recorded till the moment.

4. The sensor value part shows the immediate raw reading of the sensor.

5. The time period field shows the time period for the last revolution/cycle.

That's it ! enjoy

For any queries write to yashbit@gmail.com

一个快速和轻量级应用程序使用手机的距离感应器测量旋转或移动物体的RPM（每分钟发）。

注： - 1，本程序是从来没有打算取代真正的专用转速米

2。视您的手机上的最高转速可测的传感器可能会有所不同

3，本应用程序不被设计来衡量的超高速运动的物体

4.Your Android手机/平板电脑/设备必须具有内置该应用程序中的接近传感器的工作

它是如何工作的：

1，只需启动该应用程序，你会看到仪表板

2，什么时候在移动电话的接近传感器（包括与揭露它），你会马上看到相应的RPM值

3，最大转速部分显示记录，直到此刻最大转速。

4，传感器值部分显示直接读取原始的传感器。

5，时间段字段显示的时间周期的最后转/周期。

就是这样！享受

如有任何疑问写信给yashbit@gmail.com

更新内容

v2.2

a. added rounds counter

b. fixed crash bug on froyo (android 2.2)

c. optimization for increased range of rpm measurement

v2.1

reading bug fix

v2.0

1. added new features :

a. multipliers

b. time period calculation

c. quick faqs for help

d. colored fields headings for fast recognition

2. removed errors in calculations

3. Bug fixes to increase efficiency

v 1.1 Fixed sensor stuck on after exit bug