ALLPCB
Touch Key Design Essentials
Practical capacitive touch PCB design guidelines and AiP8F32XX MCU recommendations: routing, TouchPad sizing, Cadj selection, grounding, and layout tips for engineers.
Gesture Control Using Broadcom APDS-9960
Guide to integrating Broadcom APDS-9960 IR gesture sensor with microcontrollers using I2C and CircuitPython, covering principles, wiring, code, and tuning tips for reliable detection.
Touch Switch Circuit Using Dual D Flip-Flops
Technical overview of a touch switch circuit using a 4013 dual D flip-flop, covering monostable timing, input protection, relay drive and toggle on/off operation.
Capacitive Touch Key Design for Bluetooth Door Locks
Capacitive touch-key design with CH582/CH583 Bluetooth SoCs and drive shielding: prototype signal improvement, reference schematic, and low-power operation (~15 uA standby).
What Determines Smartphone Touchscreen Feel
Analysis of smartphone screen quality and user comfort, focusing on touchscreen responsiveness and linear motor haptic feedback differences across brands and models.
Why Capacitive Touch Became Dominant
Analysis of capacitive vs resistive touch: principles, form factors, strengths and weaknesses, and why capacitive touch became the mainstream choice.
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.
How Face Recognition Devices Work and Their Uses
Overview of face recognition devices: 3D image processing, face localization, preprocessing and matching workflows, and applications in access control and attendance systems.
Flexible Strain Sensor for Gesture Recognition
Flexible strain sensor (serpentine meander, GF>1000) combining high sensitivity and mechanical robustness, integrated into a wearable system for real-time sign language translation.
Why Do Touchscreens Require Skin Contact to Slide
Explains why capacitive touchscreens require skin contact to register swipes, contrasts resistive touchscreens and styluses, and summarizes capacitive coupling principles.