Qualcomm QCC5141 Earbud reference design supports TrueWireless Mirroring and Hybrid ANC

Qualcomm has recently unveiled an earbud reference design based on the company’s QCC5141 low-power premium-tier Bluetooth SoC that supports TrueWireless Mirroring and Hybrid Active Noise Cancellation (ANC). What are TrueWireless Mirroring and Hybrid ANC? Qualcomm TrueWireless Mirroring technology relies on only one earbud to maintain the Bluetooth connection with the smartphone, while the secondary bud mirrors the connected bud.  If the connected earbud is removed, the secondary earbud assumes the connection with zero interruption. The technology enables both a better, more stable connection and lower power consumption Hybrid Active Noise Cancellation (ANC) is designed to provide high-quality immersive experiences and enable natural leak-through of noise to allow for awareness of surroundings. Qualcomm ANC is fully integrated into this QCC5141 chip to reduce the complexity, cost, and PCB space of adding ANC to earbuds and hearables. QCC5141 Earburd Reference Design Key features and specifications: WiSoC – Qualcomm QCC5141 single-chip Bluetooth SoC with power management, dual audio DSP @ 120 MHz, application […]

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Nubia Watch Comes with a 4-inch AMOLED Flexible Display (Crowdfunding)

We previously covered Nubia–α wearable “smartphone” in 2018. The device was basically a smartwatch with a long curved display, and at the time was at the prototype/design stage. There’s now a similar, but more refined Snapdragon Wear 2100 powered Nubia Watch with a 4.01-inch AMOLED flexible display that has recently launched on Kickstarter. It’s unclear whether it’s related to the older prototype, as the company claims to have conceptualized the watch in October 2019. Nubia Watch hardware specifications: SoC – Qualcomm Snapdragon Wear 2100 (8909Q) quad-core Cortex A7 processor with Adreno 304 GPU System Memory – 1GB RAM Storage – 8GB storage Display – 4.01-inch AMOLED flexible 2-point touchscreen display with 960 x 192 resolution covered with Schott glass Connectivity Bluetooth 4.1 GNSS – GPS, GLONASS, Beidou Sensors – Accelerometer & gyroscope, pressure sensor, heart-rate sensor, geomagnetic sensor Misc – Power button Battery – 425 mAh Lithium battery good for up to 7 days (power saving mode) or 36 hours […]

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Some Smartwatches and Fitness Trackers Double as Earbuds Holders

Wireless earbuds are nice, except I don’t really use the ones I have because they tend to fall off my ears as soon as I perform physical activities (e.g. running), and I often misplace them, so I may not have on hand when I need them. One thing I wear virtually 24 hours a day is my smartwatch/fitness tracker, namely Weloop Hey 3S (still going strong after over 2 years), so if there were some wearables that could also store earbuds that would be nice. While browsing new product arrivals this morning, I discovered there were several smartwatches that ships with Bluetooth earbuds that are stored inside the watch when not in use. ASLING S300 smartwatch (left of the above photo) ships with two Bluetooth 5.0 earbuds that are stored on the side of the watch, while ASLING G36 smart bracelet stores them through an opening on the top of the watch which the company calls a “hidden electric warehouse”. […]

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ATCwatch Arduino Firmware Works with PineTime, COLMI P8, “Da Fit” Smartwatches

Earlier this week, we wrote about fake heart rate sensors found in ultra-low-cost fitness trackers as reported by Aaron Christophel. It turns out he also maintains an open-source project specific to P8 watch, PineTime, and other smartwatches compatible with Da Fit Android app: ATCwatch Arduino firmware. The firmware provides a basic menu system, notifications, and the latest implementation enables direct HTTP or HTTPS GET requests to control IoT devices and get info from the Internet. The current firmware consumes about 150-200uA standby current, and last roughly 92 hours on a charge with heavy notification and usage. While it’s possible to connect an SWD St-Link V2 to flash the bootloader and firmware, it’s not necessary, as it’s possible to flash ATCwatch Arduino firmware without having to open the watch by using over-the-air update function with DaFlasherFiles for PineTime or P8 watch together with DaFlasher Android app. Once the update is done, you can get notifications on your phone after installing D6 […]

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Beware of Fake Heart Rate Sensors in Low-Cost Fitness Trackers

Manufacturers always attempt to lower the BoM costs of their products to increase sales and boost profits. Most do it in an honest way, but some are either incompetent or deceptive as we’ve recently seen in an IR thermometer was the infrared unit was not connected to the mainboard. I’ve just been informed about another trick that’s been going on for a while. Some ultra-cheap fitness trackers come with fake heart rate sensors that are simply replaced by two LED’s to simulate the real thing. The trick was discovered last year by Aaron Christophel who purchased several fitness trackers believe to be based on Nordic Semi nRF52832 in order to as he wanted to use Arduino firmware with those. He managed to do so in several with IWOWNFIT I6HRC tracker being the best suited for the tasks. But he also found some bad apples in the lot with several trackers using a “heart rate sensor” board with two LED’s only, […]

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Snapdragon Wear 4100+ Platform Combines Cortex-A53 Cores with Always-On Cortex M0 Core

Qualcomm entered the wearables market in 2016 with the launch of Snapdragon Wear 2100 quad-core Cortex A7 SoC, followed by other models all based on Cortex-A7 cores including the more recent Wear 3100 platform which also added a QCC1110 co-processor to extend battery life. The company has now made the switch to 64-bit Arm with Snapdragon Wear 4100 and Wear 4100+ both featuring a quad-core Arm Cortex A53 processor and companion chips, but the latter adds QCC1100 Arm Cortex-M0 always-on (AON) co-processor to lower power consumption. Snapdragon Wear 4100+ key features and specifications: SoC – Qualcomm SDM429w or SDA429w CPU – Quad-core Cortex-A53 @ up to 1.7 GHz GPU – Adreno A504 GPU up to 320 MHz with OpenGL ES 3.1 API support DSP – Dual Qualcomm Hexagon QDSP6 v56, dedicated MDSP for modem and GPS, and dedicated ADSP for Open Sensor Execution Environment (SEE) and audio Memory & Storage I/F – LPDDR3 up to 750 MHz, eMMC 5.1 flash […]

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nRF52805 Tiny Bluetooth 5.2 SoC is Optimized for Small Two-layer PCB Designs

Nordic Semi has just added a new member to its nRF52 Bluetooth 5 wireless SoC family with nRF52805 offered in a tiny WLCSP package measuring 2.48×2.46 mm and optimized for cost-effective 2-layer PCB designs. nRF52805 key features and specifications: MCU Core – Arm Cortex-M4 @ 64 MHz Storage & Memory – 192 KB Flash, 24 KB RAM Wireless Bluetooth Low Energy and 2.4 GHz proprietary protocols. High bitrate – 2 Mbps, 1 Mbps +4 dBm TX power -97 dBm RX sensitivity (1 Mbps Bluetooth LE) Integrated balun with single-ended output I/Os – UART, SPI, TWI, 2-channel 12-bit ADC Security 128-bit AES Power Consumption 7 mA in TX (4 dBm) 4.6 mA in TX (0 dBm) 4.6 mA in RX (1 Mbps) 0.3 μA in System OFF 1.1 μA in System ON with 24 KB RAM retained and RTC running Supply Voltage – 3.6V max Package – 2.48×2.46 mm WLCSP Note the latest Nordic Semi wireless SoC does not support all […]

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TTGO T-Watch K210 / K210 AIOT Watches Perform Face Detection with Kendryte K210 RISC-V Processor, ESP32 WiSoC

After covering ESP32 based TTGO T-Watch-2020 programmable watch last month, I noticed LilyGO launched “TTGO T-Watch K210 AIOT” watch with Kendryte K210 RISC-V AI SoC and a camera for face detection and recognition, and while searching for information, I discovered another apparently similar “TTGO T-Watch K210“. But let’s look into the specifications to find out what the differences are. I first came across TTGO T-Watch K210 AIOT, so let’s have a look at some preliminary specifications for this model: AI Processor – Kendryte K210 RISC-V Dualcore 64bit with FPU with 8MB SRAM Storage – 16MB QSPI flash, MicroSD card socket Display I/F – FPC connect for external display (not included) Camera – 2MP OV2640 sensor Audio – MAX98357A Audio codec; CVSD & SBC audio encoding Connectivity – 2.4 GHz 802.11b/g/n WiFi 4 up to 150 Mbps, Bluetooth 4.2 BR/EDR and BLE Debugging – USB-C port via CP2104 Expansion UART, SPI, I2C, PWM, I2S I2C grove connector I/O Voltage – 3.3V […]

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