Hi, Cauê
Because I had wanted to use ANT USB stick with ANTware, I also bought WRL-08840. 
However, it is necessary to remodel ANT_WrappedLib of ANTware so that WRL-08840 may operate by Normal Serial by Drivers. 
Then, WRL-08840 was operated with Arduino. 
It operated without trouble. 
I do not have the so much knowledge of hardness. 
However, if Arduino is used, WRL-08840 can be operated comparatively easily. 
Please examine the use of Arduino. 
best regards,
taki