Wrong body size

[higho51420]

i run the command: for meas in lidar.iter_measurments():
it's occur the

Traceback (most recent call last):
File "/home/nx/Desktop/rplidar/simple.py", line 15, in
for meas in lidar.iter_measurments():
File "/home/nx/.local/lib/python3.6/site-packages/rplidar.py", line 323, in iter_measurments
raw = self._read_response(dsize)
File "/home/nx/.local/lib/python3.6/site-packages/rplidar.py", line 199, in _read_response
raise RPLidarException('Wrong body size')
rplidar.RPLidarException: Wrong body size

i have read some solutions ,but it also occur sometimes . my pyserial version is 3.4.Thank you for your read

[zlite]

I have the same problem. My RPLidar A1M8 with firmware 1.29, hardware version 7, does not work with the Python library and gives the wrong body size error. It does work with the Slamtec Frame Grabber app, however, so I know the hardware is working. My other A1M8s with firmware 1.27, hardware version 5, all work fine with the Python library. I think Slamtec changed something (perhaps adding the new scan modes) in the latest firmware that broke the Python library

[zlite]

Update: Slamtec says that this may be due to the default scan mode being changed to boost mode in firmware 1.29. They say that they do not support Python(!) and are not intending to fix these libraries. They say it's up to us to fix them ourselves :-(

[tkwk031]

solve this problem
https://github.com/Roboticia/RPLidar << use
roboticia.git provides selecting scan mode.
default: normal if you want the express mode read rplidar.py