Heroway serial screen FAQ: resistive touch

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This section covers resistive touch issues: frame pressing (resistive touch is pressure-sensing single-point; loosen the frame screws, remove the bezel for isolated testing, and never add tempered glass on a resistive screen); misdiagnosing a communication problem as touch failure (audible click and normal page switching mean touch is fine - check communications instead); touch file misalignment after building the project with a mismatched resolution (the demo project must match the screen resolution); drift after years of aging (inspect the four-wire FPC for physical damage or loose socket, visible creases mean factory replacement - hand soldering 4-wire tails is impractical); user miscalibration (screens are factory calibrated with auto-calibration; recalibration is only needed after 90/180-degree rotation; first check the CFG configuration).