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The 2nd part of this mini series goes through the motions of desoldering the motors right-angle daughter board from the main circuit board, removing the optical encoders and looking closer at the motor control circuit and how it differs from the original bigtrak model.   ...
For the BigTrak conversion project, I plan to retrofit the lunar rover toy with a modern small board computer like a Raspberry Pi or something similar, my plans to start with are to install the new hardware and get it to function like the original device and then add other hardware/software components at a later time.   Today I took apart the bigtrak lunar rover toy for some preliminary investigations, I discovered that the drive trains feedback system uses optical encoders rather than hal ...