WCH Category - CNX Software - Embedded Systems News

April 14, 2026April 14, 2026 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

192 MHz WCH CH32V205 RISC-V MCU offers a 480 Mbps USB 2.0 interface

WCH CH32V205 is a 32-bit RISC-V MCU clocked at up to 192 MHz with 32KB SRAM, 256KB flash, and a USB 2.0 high-speed Host/device interface with a 480 Mbps PHY. The new microcontroller also features another USB 2.0 full speed (12 Mbps) Host/Device interface, a USB PD port, eighty GPIOs, a 16-channel 12-bit ADC, a 16-channel touchkey interface, and other interfaces such as CAN Bus, USART, I2C, SPI, and QSPI. WCH CH32V205 specifications: MCU core – QingKe 32-bit RISC-V3B core processor up to 192 MHz Memory & Storage 32KB SRAM 256KB Flash Flexible Static Memory Controller (FSMC) Peripherals USB 480Mbps high-speed USB 2.0 controller and PHY Full-speed USB 2.0 controller and PHY USB PD and Type-C controller and PHY 8x USARTs, 2x I2C, 2x SPI , 1x QuadSPI 1-wire (default)/ 2-wire serial debug interface 1x CAN 2.0B Up to 80x GPIO with 16 external interrupts Programmable Protocol I/O Controller (PIOC). Note: […]

April 6, 2026 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

$2 WeAct CH32V006F8U6 Mini Core board features CH32V006 RISC-V MCU, supports 3.3V or 5V I/O voltage

WeAct CH32V006F8U6 Mini Core is an inexpensive, tiny development board based on the 48 MHz CH32V006 RISC-V microcontroller and equipped with a USB-C port, a Reset button, and two rows of 12-pin headers for I/Os using either 3.3V or 5V voltage. WCH introduced the CH32V006 in 2024 as an update to the popular CH32V003 with more memory (8KB vs 2KB SRAM), storage (62KB vs 8KB flash), additional GPIOs, a wider supply voltage range, and an upgraded 32-bit RISC-V2C core. I just hadn’t seen any third-party CH32V006 boards so far. The WeAct Studio board changes that. WeAct CH32V006F8U6 Mini Core board specifications: SoC – WCH CH32V006F8U6 CPU – 32-bit “RISC-V2C” core up to 48 MHz Memory – 8KB SRAM Storage – 62KB flash + 3KB “boot” flash USB – 1x USB Type-C port for power and debugging Expansion 2x 12-pin headers with GPIO, ADC, USART, I2C, SPI I/O Voltage – 3.3V […]

March 26, 2026 by Debashis Das - 6 Comments

AngstromIO – A tiny 9.0 x 8.9 mm ATtiny1616 board that fits on top of a USB-C connector

AngstromIO ATtiny1616 tiny USB-C development board

Dieu-de-l-elec’s AngstromIO is an incredibly tiny open-source development board based on Microchip’s ATtiny1616 MCU. Measuring just 9.0 x 8.9 mm, the board is barely larger than the edge-mounted USB Type-C connector that powers it, making it ideal for highly space-constrained embedded projects. Despite its tiny footprint, AngstromIO packs a QFN20-packaged ATtiny1616 MCU, two addressable SK6805-EC15 RGB LEDs, and includes access to various usable GPIOs, including I2C, UART, and UPDI for programming. AngstromIO specifications: MCU – Microchip ATtiny1616 8-bit AVR microcontroller @ up to 20 MHz with 16KB flash, 2KB SRAM, 256 bytes EEPROM USB – 1x USB Type-C port (power only, no data lines connected to the MCU) Expansion via solder pads UPDI pin for programming I2C (SDA, SCL) 2x GPIOs (PB2/TX, PA3) 5V and GND Misc – 2x SK6805-EC15 addressable RGB LEDs Power Supply 5V via USB-C port Ultra-low power consumption (down to 200nA in power-down mode) Dimensions – 9.0 […]

March 9, 2026 by Debashis Das - 2 Comments

SayoDevice O3C 3-Key Hall-effect keypad boasts 8,000Hz polling rate for playing rhythm games

While searching for new products on AliExpress, I came across the SayoDevice OSU O3C, which looks very similar to other macro keyboards such as the 4xMacropad, the LILYGO TTGO T-Encoder, or the T-Keyboard-S3. However, like the TENSTAR T-Display, it sold over 10,000 pieces on Aliexpress. This warranted an investigation, and I found that it is actually a Hall-effect keypad mainly designed for rhythm and single-input games such as osu! and Geometry Dash. The keypad features OUTEMU magnetic Hall-effect switches with rapid trigger support and a customizable actuation point as low as 0.05 mm, for extremely fast and precise keystrokes. The keyboard connects to a PC via a USB 2.0 cable and supports an 8,000 Hz polling rate for low input latency. The device includes a 0.96-inch IPS color display that can show key travel information, key press counts, or custom images and text, and the first line of the screen […]

January 5, 2026January 5, 2026 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Openterface KVM-GO – An ultra-compact KVM-over-USB solution with HDMI, DP, or VGA video input

Small enough to fit on a keychain, Openterface KVM-GO is a tiny, open-source hardware KVM-over-USB gadget available with an HDMI, DisplayPort (DP), or VGA connector and is designed for headless device troubleshooting and remote server monitoring. It follows the company’s earlier Mini-KVM KVM-over-USB device introduced in 2024 with HDMI and audio inputs. The new KVM-GO is more versatile with an HDMI, DP, or VGA connector, and does not require any video cable since it’s designed to be connected directly to the target device. It also adds a microSD card slot for easy OS installation. Openterface KVM-GO specifications: Microcontroller – WCH CH32V208 RISC-V MCU @ up to 144 MHz with Bluetooth LE, USB 2.0 Storage – MicroSD card for remote OS installation and file transfers Control method – KVM-over-USB Video capture Up to 4K @ 60 Hz Input port – HDMI, DisplayPort, or VGA, depending on model (direct connection to target, […]

January 3, 2026 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

WCH CH32H417 dual-core RISC-V MCU offers USB 3.0, 500MB/s UHSIF, and Fast Ethernet interfaces

WCH CH32H417 is a high-performance dual-core RISC-V microcontroller clocked at up to 400 MHz with up to 960 KB flash, 896KB SRAM, and a range of interfaces, including a 5 Gbps USB 3.0 Host/Device SuperSpeed interface. Other notable features include a 500MB/s UHSIF (Universal High Speed Interface), 10/100Mbps Ethernet MAC and PHY, a SerDes high-speed isolated transceiver, a USB 2.0 High-Speed Host/Device, a USB 2.0 OTG Full Speed, USB PD support, and Display and Camera interfaces. The CH32H417 also offers the usual low-speed I/Os (95x GPIO, SPI…) and analog inputs and outputs (ADC/DAC). WCH CH32H417 CH32H417 specifications: Cores (Coremark: 5.73/MHz) QingKe RISC-V5F up to 400 MHz QinKe RISC-V3F up to 144 MHz GPU – Graphics Processing Hardware Accelerator GPHA Memory – 896KB SRAM Storage 960KB Flash 200MHz dual-edge SD/EMMC controller (SDMMC) SDIO master/slave interface with support for SD/SDIO/MMC Flexible Storage Controller FMC Display – DCT-TFT Display Controller LTDC Camera I/F […]

November 5, 2025November 6, 2025 by Debashis Das - 7 Comments

WCH BLE Analyzer Pro – A Bluetooth LE sniffer, analyzer, and debugging tool

WCH BLE AnalyzerPro A BLE sniffer debugging tool

WCH BLE Analyzer Pro is a USB-based Bluetooth Low Energy (BLE) sniffer and debugging tool designed to capture, decode, and analyze BLE communication packets in real-time. The analyzer supports adjustable polling intervals, broadcast and connection packet tracking, address filtering, and detailed packet inspection with statistics and graphical representation. It can monitor BLE broadcast and connection data in real-time and includes functions such as PHY mode selection and whitening control. These features enable low-level monitoring of BLE communication, help identify transmission issues, and verify protocol behavior. Applications include use in R&D, testing, and debugging of Bluetooth-enabled products such as IoT devices, wearables, and sensors. WCH BLE Analyzer Pro specifications: Main chips – 3x CH582F Bluetooth LE RISC-V microcontrollers, and a CH334 USB hub (see board photo at the end of the post) Supported protocol – Bluetooth Low Energy (BLE) 4.0/4.2/5.0 Capture range – BLE advertisement and connection packets Frequency band – […]

October 7, 2025November 19, 2025 by Debashis Das - 5 Comments

Sub $7 CH32V317 board offers 10/100Mbps Ethernet, dual USB 2.0 Type-C, DVP interface

The nanoCH32V317 from MuseLab is a low-cost RISC-V development board designed for prototyping embedded systems and education. Built around the 144MHz WCH CH32V317WCU6 MCU. This development board is suitable for various embedded, IoT, prototyping, and automation projects. Other features of the development board include a USB 2.0 high-speed and full-speed controller, a 10/100Mbps Ethernet MAC with PHY, SDIO, and a DVP interface for digital video input, as well as advanced motor PWM timers for control applications. The board also includes an 8MHz main crystal and a 32.768KHz RTC crystal. For programming, it includes a dual USB Type-C interface, a USB ISP, as well as an SWD port. nanoCH32V317 board specifications: MCU – WCH CH32V317WCU6 32-bit RISC-V core up to 144 MHz clock frequency USB 2.0 High-Speed (HS) and Full-Speed (FS) controllers Integrated Ethernet MAC + 10/100M PHY DVP interface, SDIO, and advanced motor PWM timer support Memory – Up to […]