ALLPCB
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.
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.
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.
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.
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.
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.
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
Flexible Wearable Sensors: Current Status and Challenges
Review of flexible wearable sensors covering pressure, temperature, humidity and optical devices, MXene-based materials, TFT sensor arrays, fabrication challenges and trends.
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.
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.
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.
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.
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.
Wireless Charging for Wearables with STWLC38
Technical overview of STWLC38 wireless power receiver for wearables, covering Qi certification, FOD and ARC features, reference designs and development resources.
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.
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.
Smartwatch and Patch Using a Piezoelectric Blood Pressure Sensor
KAIST-developed wearable piezoelectric blood pressure sensor validated in clinical trials, meeting accuracy standards and integrated into smartwatch and patch prototypes.
Flexible Electronic Skin: Applications and Pros/Cons
Overview of flexible electronic skin: bendable, stretchable sensors for biomedical monitoring, wearables, robotics, VR; advantages, limitations and integration challenges.
Wearable Sweat Sensors: Benefits and Applications
Review of wearable electrochemical sweat sensors summarizing analytes, sampling and collection methods, sensor and power system design, integration, and challenges for clinical use.
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.