ALLPCB
DIY Smartwatch: Step-by-Step Guide
RetroWatch DIY guide to build an Android-connected smartwatch using Arduino and Bluetooth. Covers wiring, library setup, code upload and Android app configuration.
Smart Rings: Features and NFC Usage
Explore smart rings: key features, health tracking, and NFC usage for payments and data sharing in this detailed guide.
How HUD Head-Up Displays Work and Their Advantages
Technical overview of automotive HUD (head-up display) technology: optical projection, components, displayed data, implementation approaches, constraints and future trends.
Temperature Sensors in Wearable Devices
Technical overview of temperature sensors for wearables: challenges, contact measurement, thermal-path optimization, and specs for accurate body-temperature monitoring.
Solid-State Battery Breakthrough for Wearables
Explore the breakthrough in solid-state batteries for wearables, offering safety, energy density, and innovation for next-gen devices.
What Smartwatches Do and Typical Battery Life
Overview of smartwatch functions and battery life: features (health tracking, notifications, GPS, apps) and factors affecting real-world battery performance.
Smartwatch Blood Pressure Accuracy and Key Features
Overview of smartwatch features and uses, including health monitoring, activity tracking, notifications, and limitations of wrist-based blood pressure estimates.
Wearable Devices: Current Status and Future Trends
Overview of wearables market growth, device categories and trends—smartwatches, smart glasses, smart clothing—and implications for sensors, connectivity and health monitoring
Basic Structure of VR Headsets
Technical overview of VR headset components: processor, display, convex lenses and gyroscope for orientation tracking and high-refresh rendering to reduce motion sickness.
ESP32 DIY Smartwatch with 192 LEDs
Hackaday ESP32 PICO smartwatch project summary: ESP32 PICO D4 design with IS31FL3733-driven 192 LEDs (four concentric rings), I2C control, WiFi/Bluetooth/ESPNOW mesh.
Smart Helmet Features and Applications
Technical overview of smart helmet technologies, covering augmented reality, head tracking, VR displays, wireless communication, HCI, and safety monitoring for engineering use.
Open-Source Bone Conduction Hearing Aid Research
Technical overview of bone conduction headsets, openMHA-based hearing-aid research hardware, audio codecs, ASIC/ML integration, and key limitations.
How Smartwatches Monitor Sleep
Overview of how wearables use actigraphy and cardiopulmonary coupling (CPC) to infer sleep stages, assess deep sleep accuracy, and enable at-home physiological sleep monitoring.
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.
Skin-Integrated PPG-ECG Multimodal Sensing Patch Design
Skin-integrated PPG-ECG patch using ultraflexible organic photodetectors and hydrogel electrodes to monitor HR, RR, cuffless BP and SpO2 with high NIR responsivity.
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.
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.
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.
Four Types of Wearable Noninvasive Glucose Sensors
Review of wearable noninvasive glucose sensors for diabetes management, covering ISF, sweat, tear and saliva sensing, device challenges in safety, power, and data reliability.
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.