mcu News - Page 26 of 53 - CNX Software

January 21, 2022April 27, 2023 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

WCH CH32V307 RISC-V development board features 8 UART ports controlled over Ethernet

CH32V307 RISC-V development board 8x UART

CH32V307V-EVT-R1 is a development board based on WCH CH32V307 RISC-V microcontroller with an Ethernet port, an USB Type-C port, and eight UART interfaces accessible through headers. As we noted in our article about CH583 Bluetooth 5.3 RISC-V microcontroller, WCH (Jiangsu Qin Heng) has started to share resources like datasheets and code samples through Github. They’ve done the same again for CH32V307 with schematics (PDF only), a datasheet in English, and firmware either bare metal or based on RT-Thread OS to control the eight serial interfaces over Ethernet. Let’s check CH32V305 and CH32V307 MCU specifications first: MCU core – WCH designed RISC-V4F 32-bit RISC-V core up to 144MHz FPU – Single-cycle multiplication and hardware division, hardware float point unit (FPU) ; Memory – Up to 64KB SRAM Storage – Up to 256KB Flash Networking – Gigabit Ethernet MAC, 10 Mbps PHY USB – 1x USB 2.0 OTG full-speed interface, 1x USB […]

January 20, 2022January 20, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Atmosic ATM33 – A Bluetooth LE 5.3 Cortex-M33 MCU with energy harvesting capabilities

ATM33e energy harvesting evaluation board

Atmosic ATM33 is a Bluetooth LE 5.3 compliant Cortex-M33 microcontroller with optional energy harvesting capabilities that can enable up to 5x longer battery life and even battery-free solutions. The 64 MHz MCU also comes with 64 KB ROM, 128 KB RAM, 512 KB non-volatile memory, hardware security features, and SensorHub hardware block that allows data to be managed while the majority of the SoC, including the MCU core, is in a hibernated state. Atmosic ATM33 specifications: MCU core – Arm Cortex M33F core @ 64 MHz Memory/Storage 64 KB ROM, 128 KB RAM, 512 KB NVM Retention RAM configuration: 16 KB to 128KB in 16 KB step sizes Wireless Connectivity Bluetooth Low-Energy 5.3 compliant 2 Mbps, 1 Mbps 500 kbps, and 125 kbps PHY rates Supports Bluetooth Angle-of-Arrival (AoA) and Angle-of-Departure (AoD) direction finding Tx: 0 to 10dB 0.7mA receiver 16 MHz / Optional 32.768 kHz Crystal Oscillator Atmosic SensorHub […]

January 19, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Wiliot Starter Kit for retailers features a smart coffee cup tracking temperature, fill level, location, etc…

smart coffee cup with sensors, energy harvesting

Wiliot Starter Kit aims to demonstrate the ability of the Wioliot’s self-powered IoT Pixel and cloud services to retailers with a kit including a Coffee cup that’s capable of tracking liquid temperatures, fill level, motion, location changes, humidity, and proximity. The kit was previously only available to larger retailers through a “controlled release model”, but the company has now switched to an “open model” so that any retailers can use the technology to track products and packages. Let’s what’s included inside the start kit, and try to understand how the Wiliot solution works. Wiliot Starter Kit includes the following hardware: 1 x IoT Pixel-ready Coffee Cup 5 x Single-Band IoT Pixels mounted on cardboards 5 x Dual-Band IoT Pixels mounted on cardboards 1 x Single-Band Bridge Device 1 x Dual-Band Bridge Device You’ll also get 6 months of Wiliot Cloud Services, access to the Wiliot community forum & support Portal, […]

January 18, 2022April 4, 2022 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Raspberry Pi RP2040 is now available in quantities for 70 cents and up

Raspberry Pi RP2040 microcontroller has been available for one dollar in single quantities for about half a year, with at the time, 500- and 3400-pieces reel pricing to be determined. But Raspberry Pi Trading has now started to sell the chip in bulk with reels of 3,400 and 500 pieces directly to businesses for a unit price of respectively 70 and 80 cents via the new Raspberry Pi Direct website. Distributors have been selling reels for a while, but closer to 85 cents to 95 cents per unit. That basically means smaller quantities should still be purchased through distributors, but it makes more sense to purchase reels directly from Raspberry Pi Trading. Eben Upton also says they have enough wafer stock to produce 20 million chips with more on the way, so no shortage is expected. That contrasts with the current situation with many STM32 microcontrollers when some companies have […]

December 30, 2021January 2, 2022 by Sponsored Post - 2 Comments

Indoor positioning BU01 development board can detect tiny body movements (Sponsored)

GPS is available for outdoor positioning, what about indoors? There is a positioning technology that is more accurate than GPS: UWB. The technology offers positioning accuracy within 10cm which greatly compensates for the shortcomings of the indoor RSSI positioning of past IoT products. UWB technology is a wireless carrier communication technology that uses a frequency bandwidth above 1 GHz. It does not use a sinusoidal carrier but uses nanosecond-level non-sinusoidal narrow pulses to transmit data and occupies a large frequency spectrum, hence the name “Ultra-Wideband”, or UWB for shorts. Besides positioning, UWB can also be used for data transmission with a rate of hundreds of megabits per second. BU01 development board features MCU – STMicro STM32F103 Arm Cortex-M3 microcontroller UWB module – Ai-Thinker BU01 module 50 I/O pins exposed for functions. Sensors – Onboard acceleration sensor, temperature, and humidity sensor Misc – User buttons and LED Power Supply – 5V […]

December 30, 2021December 30, 2021 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

CH583 RISC-V microcontroller supports Bluetooth 5.3 LE

Following up on the CH572 RISC-V BLE microcontroller with 10KB SRAM, WCH has now introduced the CH583 RISC-V microcontroller with 32KB SRAM, 1 MB flash, and support for the latest Bluetooth 5.3 LE standard. The new microcontroller also offers a wide range of peripherals with two USB host/device interfaces, up to 40 GPIOs, four UART, two SPI, one I2C, up to 14 ADC interfaces, and more. WCH also offers CH581 and CH582 microcontrollers with a different minimum input voltage, less storage (256KB for CH581) and/or peripherals. CH581, CH582, CH583 specifications: MCU core – 32-bit RISC processor WCH RISC-V4A with RV32IMAC instruction set Memory – 32 KB SRAM Storage – 512KB non-volatile storage FlashROM: 448KB user application program memory area CodeFlash 32KB user non-volatile data memory area DataFlash 24KB system boot program memory area BootLoader 8KB system non-volatile configuration information memory area InfoFlash BLE Connectivity Bluetooth Low Energy (BLE) v5.3 Integrated […]

December 15, 2021December 21, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

CANBed Raspberry Pi RP2040 board supports CAN Bus, OBD-II protocol

CANBed: Raspberry Pi RP2040 CAN Bus board

We previously wrote about adding CAN Bus to Raspberry Pi Pico with CANpico expansion board. CANBed is a single board with a Raspberry Pi RP2040 microcontroller and a Microchip MCP2551 CAN receiver plus some extra I/Os that offers an alternative. CANBed supports the CAN 2.0 and OBD-II protocols via either a DB9 connector or a 4-pin terminal block, offers two 4-pin Grove headers and an extra I/O header for expansion, as well as 9-28V power input. CANbed specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133 MHz with 264KB SRAM Storage – 2MB SPI flash CAN 2.0 or OBD-II interface via DB9 port or 4-pin terminal block via Microchip MCP2551 CAN transceiver, 120 Ohm terminal resistor. USB – 1x Micro USB port for programming Expansion 2x Grove header (I2C + UART) SPI header 18-pin header with GPIO, UART, I2C, 4x analog inputs, 5V, GND Misc – […]

December 10, 2021December 9, 2021 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Sifive Essential 6-Series RISC-V processors target Linux, real-time applications

SiFive has been busy. Just a few days after SiFive Performance P650 announcement, the company has announced the SiFive Essential 6-Series RISC-V processor family starting with four 64-bit/32-bit real-time core, and two Linux capable application cores, plus the SiFive 21G3 release with various improvements to existing families. SiFive Essential 6-Series range of RISC-V processors There Essential 6-Seris family is comprised of three sub-families with two processors each: E6 Series with 1.91 DMIPS/MHz, 3.69 CoreMark/MHz E61-MC – Quad-core 32-bit embedded processor E61 – Mid-range performance 32-bit embedded processor (one-core) S6 Series with 2.07 DMIPS/MHz, 3.73 CoreMark/MHz S61-MC – Quad-core 64-bit embedded processor S61 – Mid-range performance 64-bit embedded processor (one-core) U6 Series with 2.07 DMIPS/MHz, 3.73 CoreMark/MHz U64-MC – Quad-core 64-bit application processor U64 – Mid-range performance Linux-capable processor (one-core) E6-Series and S6 Series real-time processors have practically the same features except for the 32-bit and 64-bit cores, and a different […]