ALLPCB
Adding Capacitive Touch to Cooktops
Technical overview of capacitive touch for cooktops: CapTIvate implementation, design challenges, guard channels, assembly tolerances, false-touch prevention, and EMC.
Capacitive Touchscreen Specifications and Types
Technical overview of capacitive touchscreen specs and types, covering report rate, accuracy, sensitivity, projected/surface capacitive designs and evaluation criteria.
Four Common Touchscreen Repair Techniques
Practical touchscreen repair cases and troubleshooting guide covering diagnostics, backlight and circuit fixes, calibration issues, grounding and connector remedies
Advantages and Applications of Facial Recognition Visitor Systems
Overview of facial recognition visitor systems, their advantages in visitor registration and access control, applications in offices, hotels, banks, and privacy considerations.
Face Recognition Systems: Use Cases and Security Benefits
Face recognition visitor system for access control and automated attendance, logging identities, alerts, and event reconstruction for security.
Common Touchscreen Faults and Maintenance
Guide to touchscreen troubleshooting and maintenance for SAW, five-wire resistive and infrared types: causes, calibration steps, LED diagnostics and hardware checks.
Wireless Data Transmission for Fingerprint Handheld Devices
Technical design of a star-topology, master–slave wireless data transmission system using nRF905 to distribute and collect fingerprint authentication data from handheld devices.
Face Detection on NXP S32V Vision Platform
Implementation of real-time face detection on the NXP S32V vision platform: IMX224 capture, VSDK ISP flow, NCNN/OpenCV porting and Qt demo for ADAS driver monitoring.
What to Do When a Phone Touchscreen Fails in Winter
Practical troubleshooting for capacitive touchscreen unresponsiveness in cold conditions: causes, surface and software checks, and step-by-step fixes before repair.
Gaussian Filter: Principles and Implementation
Explanation of Gaussian filter, kernel generation and separable implementation in C++/OpenCV, with guidance on sigma selection and performance trade-offs.