Lego CAT D11 (42131). Control+ app testing step 4. Drive is running in other direction than app indicates. This piece is directly connected to the electric motor, so it seems that I
LEGO Technic 42131 Cat D11 Bulldozer [Review] - The Brothers Brick | The Brothers Brick
LEGO Technic App-Controlled Cat D11 Bulldozer 42131; A True-to-Life Replica of an Iconic Construction Machine (3,854 Pieces) - Walmart.com