FW v6.1************
①修复空速计偏小的问题
1 repair the problem of airspeed meter
②将之前多种固件集合成一个固件
2 combine multiple previous firmware into one firmware
③添加速度比例因子，通过速度实时计算pid，速度越快pid越小
3 Add the speed scale factor, calculate the pid in real time by speed, the faster the speed, the smaller the pid
④OSD添加一些新特性，爬升率，左右手油门等
4OSD adds some new features, climb rate, left and right hand throttle, etc.
⑤ Fix bug： Unit switching causes partial data display to be abnormal