Tested on CoreS3 + StackChan Body: head taps caused ghost recordings and phantom Qwen3-ASR replies. Fixed across 3 tiers with VAD, emotion tags, and lip sync.
Tested on CoreS3 + StackChan Body: the 3-zone head pad works as a talk button, strokes need a 30–400 ms gap between zones, and servo motion leaves touch stuck until recalibrate().
Flicker and ghosting on 74HC595-based seven-segment displays often come from latch boundary placement rather than power issues. A look at how QUAD7SHIFT's 16-bit atomic update avoids the problem.
