November 10, 2019 6:49 PM CET
in the topic
SBrick PWM Output in the forum
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Hello, this entry seems some years old, but I also recognize that behaviour with my direction dependend lights for Trains. Normally if the PWM Signal starts in one direction, the light switches and remains (red rear / white front).A simple CMOS Flip Flop do the job correct with the IR controller from LEGO and other Solutions. Here the signal confuses the Flip-Flops and sometimes booth LED colors light up at the same time. The explanaition from Rob shows why this occures. This exists also in the SBrick 2.