Dual Camera Principles and Advantages
Technical overview of dual-camera smartphone architectures, covering depth acquisition, color+monochrome sensors, computational imaging, optical-zoom and AR use cases.
Consumer Electronics
Inside Amazon Echo's Voice Control
Technical analysis of Amazon Echo and Echo Dot teardown: SoC/DSP, memory, connectivity, cloud updates, and the 7-microphone array enabling far-field voice capture.
Microcontroller-Based Belt Pedometer Design
Belt-type pedometer design using the ADXL345 accelerometer: hardware (sensor, MCU, LCD) and waist-acceleration step-detection method for reliable step counting.
In-depth Analysis of IoT Technology
Technical overview of NB-IoT development and 3GPP standardization, covering origins, NB-CIoT vs NB-LTE proposals, project initiation and timeline.
Si1141 Infrared Proximity Sensor Design Overview
Technical overview of the Si1141 infrared proximity sensor for robot vacuum collision-avoidance: features, specifications, optical design, power consumption, and I2C interface.
Accurate Outer-Diameter Measurement for Mobile Cables
Single-channel diameter gauge for cable outer diameter measurement: photoelectric nondestructive online inspection with ±0.003 mm accuracy, 500 Hz measurement.
Xiaomi Notebook Air: Business and Leisure
Xiaomi Notebook Air (12.5, 13.3-inch): thin-and-light laptops with 256GB PCIe SSD, 8GB RAM, NVIDIA GeForce 940MX discrete GPU, 1C fast charging and Mi Band unlock.
AP525 Test Platform Overview for Audio Measurements
Guide to AP525 hardware interfaces and AP software (Bench and Sequence Mode) with workflow for automated audio testing and report generation using TLSR9518A DUT.
STM32 Buzzer Music Playback Example
Guide to driving a passive buzzer with STM32 using STM32CubeIDE: configure clock, TIM7 microsecond delay, toggle PB5 and iterate tone/music arrays for frequency and duration.
How Many NVRs Can Add a Single Camera?
Guidelines for adding the same camera to multiple NVRs: stream limits, switch bandwidth, configuration conflicts, and using RTSP custom add for reliable multi-recorder access.
Difference Between High-Resolution and Standard Audio
Examines why high-resolution audio is inaudible on conventional equipment and how solid-state MEMS speakers reveal more detail via faster response and flat phase.
LM4766 Audio Power Amplifier Circuit
Technical overview of the LM4766 dual-channel audio power amplifier, detailing protection features, performance (40 W per channel, low THD+N), supply range and applications.
