ALLPCB
Sensors in Wearable Devices: Main Categories
Technical overview of wearable sensors: motion, biological, environmental, skin-conductance, heart-rate and barometric sensors, their principles, functions, and applications.
How HUD Technology Enhances Driving Safety
Discover how HUD technology enhances driving safety by projecting key data on the windshield, reducing distractions and improving focus.
YOBYBO Card20 Pro True Wireless Earbuds Teardown
YOBYBO Card20 Pro teardown and overview of the slim aluminum TWS earbuds, internal components, battery and connectivity.
Tech Devices Moving From Outside to Inside the Body
Overview of nine emerging implantable technologies, including brain-computer interfaces, smart dust and biodegradable bio-batteries, with clinical and privacy implications.
Embedded STM32 Smartwatch Implementation
Compact STM32 bare-metal project implementing a multi-level menu UI on a 0.96-inch OLED integrating DHT11, RTC, keys and LED with GPIO I2C emulation.
Multimodal Wearable Sensor Patch for Continuous Plant Monitoring
Multimodal wearable sensor patch for continuous plant physiology monitoring detects leaf VOCs, temperature and humidity; PCA-based ML enables earlier disease and stress detection.
Key Challenges for Smart Wearables
Technical overview of smart wearables and battery innovations, covering interaction design, data reliability, touch interfaces, and tradeoffs for anticipatory services.
Do head-mounted displays harm your eyes? Pros and cons
Overview of head-mounted displays (HMDs): design, display and tracking technologies, interaction and audio, use cases, eye-health risks, pros and cons for VR/AR applications.
Rapoo VT350S Mouse and VH800 Headset Review
Technical overview of Rapoo VT350S and VH800: dual-mode wireless gaming mouse (PAW3370, Omron switches) and dual-chamber over-ear headset with graphene drivers.
ESD Protection Strategies for Wearable Devices
Guidance on ESD protection and PCB layout for wearable devices: HBM/CDM testing, TVS diode placement, trace minimization, and protecting sensitive ICs.
Wearable Photoacoustic Patch for Clinical Monitoring and Research
UC San Diego developed a wearable photoacoustic patch for noninvasive hemoglobin imaging and vasculature mapping, using VCSEL arrays and piezoelectric ultrasound transducers.
Electronic Skin: Overview and Wearable E-Skin Operation
Overview of electronic skin (e-skin) architecture and operation: flexible substrates, integrated sensors, power, data processing and communication for wearable applications.
Wearable Ultrasound Patch for Transdermal Delivery
MIT-developed wearable ultrasound patch uses piezoelectric discs in PDMS to create microjets and transient microchannels, enhancing transdermal drug delivery and penetration depth.
Quartz Crystal Oscillators for Wearable Devices
Technical overview of crystal oscillators for wearables, covering frequency, package, low-power and vibration requirements, plus a smartwatch nRF52840 reference design.
Wearable Interactive Camera Based on V853
Design of a wearable smart camera using Allwinner V853 NPU for real-time image detection, gesture recognition and IoT connectivity; MIPI camera, DDR3, eMMC, Wi?Fi/Bluetooth.
Design Principles for Wearable Temperature Monitoring
Design considerations for wearable temperature patches to meet ASTM ±0.1°C accuracy: sensor selection, thermal contact and isolation, PCB layout and power placement.
Flexible Wearable Optical Wireless Sensor for Fruit Quality
Flexible wearable optical wireless sensing (FWOS) system using laser-patterned PET/PI/Cu circuits and AS7263 NIR sensors for real-time fruit quality monitoring via Bluetooth.
MR Headset Features and MRI Imaging Principles
Overview of mixed reality (MR) headsets — origins, tracking and interaction capabilities — plus fundamentals of magnetic resonance imaging (MRI) signal processing, reconstruction.
How Smart Bands Monitor Sleep Quality
Learn how smart bands monitor sleep quality using actigraphy and heart rate techniques like PPG and ECG for better rest optimization.
Wearable Sensor for Detecting and Monitoring Muscle Atrophy
Ohio State researchers developed a wearable sensor to detect and monitor muscle atrophy using conductive e-threads and coil-based sensing for volumetric limb tracking.