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The Function of the USB Port on a Soundbar

HDMI ARC or eARC connection is a popular option, and we recommend it for soundbars equipped with surround sound features. You’ll also find digital optical audio ports, 3.5 mm analog jacks, and Bluetooth connections among other inputs. Additionally, many soundbars are available with one or two USB ports.

Depending on the specific model, the USB ports are likely intended for one of two functions: to read audio files from a connected flash drive or to serve as a service port for firmware updates. For the majority of soundbars, the primary purpose is the former, and typically, the USB connection is capable of reading and playing popular audio file formats (such as MP3, WAV, WMA) when a correctly formatted USB drive is connected.

No matter the soundbar brand, FAT32 or exFAT often represent the optimal formatting options for USB flash storage, and certain models may experience problems if a drive larger than 32 GB is utilized. We also advise against using deeply nested folders on the drive. For optimal performance, we recommend storing files in the root directory or one level deep (i.e., a folder in the directory leading directly to the supported audio files).

Your soundbar’s USB port might have additional functionalities beyond just playing audio files

M5Stamp C6LoRa Tiny (18×15×2.3 mm) SMD Module Pairs ESP32-C6 with SX1262 LoRa Chip

M5Stamp C6LoRa Module

The M5Stamp C6LoRa is a compact LoRa SMD module that combines the ESP32-C6 Wi-Fi 6, Bluetooth LE, and 802.15.4 microcontroller with the SX1262 LoRa transceiver for both high-speed and long-distance communication. The module targets applications such as smart agriculture, remote meter reading, industrial monitoring, and outdoor long-range wireless control systems. The module measures 18 × 15 × 2.3 mm, making it suitable for space-constrained systems and compact embedded designs. M5Stack has also added an SGM13005L4 low-noise amplifier (LNA) to improve reception performance, along with a PI4IOE5V6408 I/O expander that manages the LoRa control signals without using too many of the ESP32-C6’s GPIO pins. M5Stamp C6LoRa specifications: SoC – Espressif Systems ESP32-C6 CPU Single-core 32-bit RISC-V clocked up to 160 MHz Low-power RISC-V core @ up to 20 MHz Memory/Storage – 512KB SRAM, 320KB ROM Wireless – WiFi 6, BLE 5.3, 802.15.4 (See wireless section) Storage – 16 MB external NOR flash […]

The post M5Stamp C6LoRa tiny (18×15×2.3 mm) SMD module pairs ESP32-C6 with SX1262 LoRa chip appeared first on CNX Software – Embedded Systems News.

Reasons Smartphone Makers No Longer Provide Chargers in the Package

In the past, smartphones came with a variety of accessories right from the start, including earbuds and chargers. Today, those items must be purchased separately. This isn’t a major issue since high-quality earbuds are widely available, but one would expect manufacturers to at least incorporate chargers to keep batteries charged. Supposedly, this change benefits the environment, or so companies like Samsung suggest.

The electronics retailer Uniqbe Limited analyzed the ecological consequences of smartphone makers skipping charging bricks in their packages. The analysis indicates that firms could cut packaging materials per smartphone box by 50%, resulting in slimmer boxes. These slimmer boxes enable manufacturers to fit more devices on shipping pallets (70% more). The environmental repercussions extend beyond the smartphone’s initial lifecycle to its disposal. Slimmer boxes take up less landfill space, and since new smartphone shipments do not come with charging bricks, customers are less likely to discard their old ones with each upgrade. This translates to tens of millions less metric tons of e-waste annually. Financial gains also play a role.

With more smartphones fitting per pallet, shipping expenses per unit are lowered. Additionally, the cost of producing all the items packed into a box declines as the price of a charging brick is no longer included in each package. While companies may be motivated by profit, they are nonetheless engaging in eco-friendly practices.

The emergence of USB-C technology has made traditional charging bricks largely unnecessary.

Although phone makers no longer provide charging bricks with their packages, they still equip new devices with USB-C cables. Thanks to advancements in USB technology, these cables have become highly compatible, enabling users to utilize their own wall outlet plugs. Sort of.

Many companies favor USB-C cables for several reasons. Unlike earlier versions, they can connect to USB-C ports regardless of orientation, and more crucially, modern USB-C cables incorporate Power Delivery (PD) technology. This functionality adjusts voltages based on the device in use, allowing for potential charging of nearly any gadget, from a Nintendo Switch 2 to a smartphone.

Theoretically, if you obtain a charger that utilizes a USB-C port (or a charger with a USB-A socket paired with a PD-compliant cable that features a USB-C port), it could serve to keep various devices charged, including multiple smartphones. However, to ensure longevity of the charging brick, it’s essential not to skimp on a cheap USB-C wall plug.

Some detractors argue that the logic is flawed.

If the statements from smartphone manufacturers are taken at face value, it seems that shipping phones without charging bricks indeed lowers packing material needs. Nevertheless, some believe this doesn’t equate to reducing overall packaging.

Critics, including Mrwhosetheboss on YouTube, have quickly noted that most smartphone users still require wall chargers. This results in increased material use since charging bricks have their own boxes, making it impossible for designers to merge packing materials into a single container any longer. This holds true whether you purchase the cable from a local Best Buy or Target. Shipping involves its own packaging and associated costs, often exceeding the savings companies experience from removing chargers from the boxes. Additionally, the earbuds that were previously included alongside charging blocks in larger packages contribute to further packing material use, transportation fees, and pollution — again, surpassing what manufacturers save by omitting them from the smartphone packaging.

Ultimately, all the savings phone manufacturers hoped to gain by eliminating chargers and shipping phones in smaller boxes are undermined by the cube-square law: as the surface area of a container increases, its volume escalates at a faster rate, providing designers more space for extras like chargers. Striving for sustainability is commendable, but it’s crucial to verify your calculations first.