Manual

SJ-PM-TFmini-S A00
Benewake (Beijing) Co. Ltd.
Page19
The tools for the firmware upgrade of TFmini-S are mostly the same as the Quick Test, which requires one
TTL-USB board to connect the TFmini-S with PC.
Figure 6 Upgrade tool of TFmini-S
Upon successful connection, open the Updater.exe. Select right port, here is “①COM8”. Input the right
baud rate in “② 115200” and click “③ CONNECT” to connect the TFmini-S with the Updater. Click
“④ Open Bin” to choose the updating firmware, whose directory will be showed in the textbox above.
Then click “⑤ Download Bin” to start upgrading. The information of upgrading will be showed in “⑥”.
Caution: Remote upgrade of the host computer and firmware files need to be placed in the pure English
path.
9 Malfunction: Causes and Troubleshooting
(1) Distance value occasionally will abruptly change into -1 beyond the range during normal
operation.
Cause: The different test environments (reflectivity of detected object, disturbance of ambient light, etc.)
will affect the signal strength of TFmini-S. For a reliable and stable measurement data, the algorithm
elimination is internally used for TFmini-S. In case of the insufficient signal strength, TFmini-S will output
-1. This value is not measurement data of TFmini-S, which is only used to remind the user that such data is
unreliable.
Troubleshooting: please use such value as the trigger signal of some unreliable data, and it will ensure that
your system can use other reliable data for further assessment and decision-making if there are some
unreliable data.
(2) Significant error between the output distant value of LiDAR and actual distance
Cause ①: Incorrect interpretation of the data communication protocol of TFmini-S.
Troubleshooting: check data communication interpretation means. In case of such error, please check the