The SignalSDR Pro is a Raspberry Pi-sized SDR that brings a credit-card-sized twist to software-defined radios (SDRs). It is a compact, streamlined device suitable for tasks ranging “from signal processing and spectrum analysis to communication systems and beyond.” The SignalSDR Pro builds on the Analog Devices AD9361 radio transceiver and the AMD Zync 7020 SoC into a credit-card format reminiscent of Raspberry Pi single-board computers. The Raspberry Pi-sized SDR also features a 40-pin GPIO header for expansion with other hardware components and added functionality. The device offers a 70MHz – 6GHz tuning range, 12-bit sample rate, 61.44MHz RF bandwidth, and two full-duplex TX/RX channels via four I-PEX antenna connectors. It is also capable of emulating other SDR hardware such as the ADALM-PLUTO and USRP B210, making it easier to integrate into pre-existing workflows. The SignalSDR Pro is a mid-range alternative to entry-level SDR options such as the AntSDR E200, KrakenSDR, […]
Sanwa Supply unveils a mouse with receiver acting as a USB/HDMI dock, and a 360-degree USB-C cable
Japanese company Sanwa Supply has introduced two unusual devices to the market. First, a wireless mouse with an RF receiver that also acts as a USB dock with HDMI output, followed by a 360-degree USB-C cable to facilitate cable management. Sanwa Supply RF mouse with USB/HDMI dock Sanwa Supply 400-MAWBT209BK (black and silver) and 400-MAWBT209BK2 (black and blue) wireless mice come with a rather large USB Type-C 2.4GHz RF and Bluetooth receiver that not only allows the user to connect the mouse to a computer but also acts as a USB dock with an HDMI output port supporting up to 4Ko60 resolutions for monitors or projectors. The dock also exposes a 5 Gbps USB 3.2 Gen 3 USB Type-C port with PD support up to 100W (90W available to peripherals) which allows the users to connect peripherals such as USB SSD enclosures, memory sticks, and keyboards. Tom’s Hardware reports the […]
T-Keyboard-S3 Pro 4-Key USB mechanical keyboard adds rotary encoder, support for daisy-chaining up to six keyboards
Last year, we featured the T-Keyboard-S3, a USB mechanical keyboard with ESP32-S3, and four mechanical keys each fitted with a 0.85-inch color display. The upgraded T-Keyboard-S3-Pro adds a rotary encoder and four magnetic interfaces on each side controlked by an STM32G030 MCU to daisy-chain the host keyboard with up to 5 slave keyboards in a 3×2 grid. Previously, we featured the ANAVI Macro Pad 12, Macro Pad 10, and Macro Pad 2 programmable keyboards. Feel free to explore those as well. LILYGO T-Keyboard-S3 Pro specifications: Wireless module – ESP32-S3-WROOM-1 used in the host model only MCU – ESP32-S3R8 dual-core LX7 microprocessor @ up to 240 MHz with Vector extension for machine learning Memory – 8MB PSRAM Storage – 16MB SPI flash Connectivity – WiFi 4 and Bluetooth 5 with LE/Mesh PCB antenna Secondary MCU – STMicro STM32G030F6P6 for I2C magnetic connectors CPU – Arm 32-bit Cortex-M0+ CPU, frequency up to […]
ORICO COM2-T3 review – A 40Gbps SSD enclosure tested with a 7000MB/s M.2 NVMe SSD
ORICO sent me a COM2-T3 SSD enclosure capable of 40 Gbps speeds for review along with the company’s 1TB O7000 NVMe SSD rated at up to 7000MB/s read speed which converts to about 56 Gbps and should be plenty enough to test 40 Gbps SSD enclosure. Thunderbolt 4 and USB4 are not always equivalent But before going into the review itself, here’s some background information. When I test the USB-A and USB-C ports in mini PC reviews, I rely on an ORICO M234C3-U4 NVMe SSD enclosure with an Apacer SSD. That enclosure was falsely advertised as a “USB4″ enclosure but still works at 40Gbps with an Intel JH7440 Thunderbolt 3 chip that works with 40 Gbps USB Type-C ports and a JMS583 “USB 3.1 Gen 2 to PCIe NVMe Gen3” bridge for USB 3.0 ports up to 10 Gbps. I always assumed a 40Gbps USB-C peripheral would always work with […]
Olimex USB-SERIAL-L is a USB-to-serial debug board with CTS/RTS pins, up to 3Mbps baud rate, adjustable voltage from 0.65V to 5.5V
There are already many USB-to-TLL debug boards on the market, but Olimex USB-SERIAL-L open-source hardware USB-to-serial board is more advanced than most with not only Tx/Rx pins, but also CTS/RTS pins, support for up to 3 Mbps speeds, and an adjustable voltage from 0.65V to 5.5V to cater to a wide range of boards. Olimex USB-SERIAL-L specifications: USB-to-serial chip – Silicon Labs CP2102N Seven signal lines – +5V, GND, CTS, RTS, TX, RX, Vref Baud rate from 50bps up to 3Mbps Output buffers with adjustable levels from 0.65 up to 5.5V USB – USB Type-C port for power and connect to host Misc – Power, Tx, and Rx status LEDs Power Supply Input – 5V via USB-C port Output – +5V to the target Dimensions – 35 x 35 x 8 mm (Custom 3D printed plastic box) Seven 200 mm long cables The Vref signal is used to adjust the […]
Waveshare RP2350-GEEK USB development board doubles as a debugger for Raspberry Pi and other Arm boards
Waveshare has recently launched the RP2350-GEEK USB development board which can also be used as a debugger for Raspberry Pi boards and other Arm-based targets. Built around the Raspberry Pi RP2350 MCU this development board/debugger features a 1.14-inch 65K color IPS LCD, a USB Type-A interface, a microSD card slot supporting SDIO and SPI communication, 16MB NOR-Flash, and multiple interfaces, including 3-pin SWD, USB to UART, and I2C ports. The board is compatible with standard CMSIS-DAP debugging tools like OpenOCD, which attaches to Raspberry Pi’s 3-pin debug connector for debugging. It also features open-source firmware for easy upgrades. Housed in a plastic case, the development board looks like a USB drive and is suitable for debugging, testing, and firmware development in IoT, embedded systems, and educational projects. Waveshare RP2350-GEEK Raspberry Pi debugger specifications Microcontroller – Raspberry Pi RP2350A MCU CPU – Dual-core Arm Cortex-M33 processor @ 150MHz Memory – 520KB internal RAM […]
GEEKOM Mini Air12 Lite Review – Part 3: Ubuntu 24.04 on a low-cost mini PC
We have already checked the hardware of the GEEKOM Mini Air12 Lite mini PC in the first part of the review, before testing the low-cost Intel Processor N100 mini PC with its 8GB RAM and 256GB SATA SSD running Windows 11 Pro in detail in the second part. We’ve now had time to test the GEEKOM Mini Air12 Lite with Ubuntu 24.04 in the third and final part of the review. We’ll test the features in Linux, run some benchmarks, evaluate storage and network performance, play some 4K and 8K videos in YouTube playback, perform a stress test to check its thermal design, and finally measure the mini PC’s fan noise and power consumption. We’ll also compare the results in Linux to the earlier GEEKOM Mini Air12 mini PC with the same CPU, but better specs and a higher price. A challenging Windows 11 / Ubuntu 24.04.1 dual boot installation […]
SparkFun introduces Quadband GNSS RTK Breakout board with Quectel LG290P module for high-precision navigation
SparkFun has released the Quadband GNSS RTK Breakout featuring the Quectel LG290P module designed for high-precision real-time kinematic (RTK) applications. It supports GPS, GLONASS, Galileo, BDS, QZSS, and NavIC constellations, with the ability to simultaneously receive signals from L1, L2, L5, and L6/E6 frequency bands. The module includes support for SBAS augmentation systems (e.g., WAAS, EGNOS, GAGAN) and PPP services (e.g., BDS PPP-B2b, QZSS CLAS), delivering reliable positioning with fast convergence times for precision navigation tasks. The breakout board offers a compact design (43.2 x 43.2mm) and multiple expansion options including 24 PTH pins, dual 4-pin JST Qwiic connectors, three UART interfaces, a USB-C connector, and additional PTH pins for BlueSMiRF/Serial-to-UART. With its RTK support and advanced GNSS capabilities, the board is ideal for applications requiring high-accuracy positioning and robust navigation performance. Previously, we covered several GNSS boards including the SparkFun GNSS L1/L5, u-blox EVK-LEXI-R10, and Conexio Stratus Pro and […]