The LEGO Technic 42100 Liebherr R 9800 and the 42099 X-Treme Off-Roader both have their dedicated control app called Control+. Although the app offers a lot of exciting possibilities it cannot be customized and some people (like) me prefer physical control over a touchscreen. The great BrickController 2 app solves this issue, you can use a gamepad that is compatible with your phone and control the LEGO vehicles!
Tag: 42100
Control+ connection bug when testing 42100 during building
UPDATE – The bug was fixed in version 1.0.3 of the Control+ app
When you are building the LEGO Technic 42100 Liebherr R 9800 set the app has a verification process built in after every batch of bags. This is a great addition because you can see whether the motors built in are working correctly or not.
Unfortunately there’s a bug in the current version as of 05/10/2019 (version 1.0.2 on both Android and iOS ), after the second batch of bags at page 367 you should only have one XL motor (color code red) connected to the hub in the superstructure.
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