$49 Rejeee multiple external temperature sensor for LoRaWAN ships with three DS18B20 temperature sensors

Rejeee multiple external temperature sensor for LoRaWAN

The “Rejeee multiple external temperature sensor for LoRaWAN” is a LoRaWAN solution for temperature sensing that includes three waterproof DS18B20 temperature sensors that could be useful for cold storage, kitchen, and greenhouse monitoring. The device has a waterproof design that can withstand moisture and wet environments, is equipped with sensors measuring temperature within the -40°C to 125°C range, plus low-power LoRaWAN connectivity and Lithium AA batteries that can last up to five years when sending data every 10 minutes. Rejeee multiple external temperature sensor for LoRaWAN specifications: Microcontroller – Unnamed Arm Cortex-M MCU; potentially STMicro STM32L151 Cortex M3 @ 32 MHz based on another temperature sensor from Rejeee. LoRaWAN Data Rate – 300 bps ~ 62.5 kbps Transmit Power – 22 dBm Max. Receiver Sensitivity – -140 dBm (BW = 125 kHz, SF12) Operating Frequency – LF: 433 ~ 510 MHz; HF: 863 ~ 928 MHz Bands EU868, IN865, RU864 […]

$129 coupon code for GEEKOM A7 mini PC with AMD Ryzen 9 7940HS CPU (Sponsored)

GEEKOM A7 coupon code

You can now get $129 off the GEEKOM A7 mini PC with the coupon code CNX129OFF for the configuration based on an AMD Ryzen 9 7940HS octa-core/16-thread processor, 32GB RAM, and a 2TB NVMe SSD by purchasing it on the GEEKOM US website. This brings the price down to $670 after applying the discount code instead of $799 for the regular price. The mini PC also supports up to four 4K displays through HDMI 2.0 and USB-C ports, provides fast networking via a 2.5GbE jack and a WiFi 6E + Bluetooth 5.3 module, and offers plenty of USB ports for expansion in a compact form factor. GEEKOM A7 specifications: SoC – AMD Ryzen 9 7940HS 8-core/16-thread processor up to 4.0GHz with 16MB cache, AMD Radeon 780M Graphics; TDP: 35 to 54W System Memory – 32GB dual-channel DDR5-5600 via 262-pin SODIMM sockets, upgradeable to 64GB Storage 2TB NVMe PCIe x4 Gen […]

MILK-V Jupiter review – A RISC-V mini-ITX motherboard and PC tested with Ubuntu-based Bianbu OS

Milk-V Jupiter RISC-V computer review

In this review or preview of the the Shenzhen Milk-V Jupiter RISC-V mini-ITX motherboard, I’ll assemble the motherboard into a mini-ITX chassis, before installing the Ubuntu 23.10 Mantic-based Bianbu OS optimized for RISC-V platforms, and testing the device to see how much progress has been done on RISC-V since I tested the StarFive VisionFive 2 SBC with Debian 12 about 18 months ago. In the first part of the review, we checked out the Radxa ROCK 5 ITX (Rockchip RK3588 Arm) and Jupiter (SpacemIT K1 RISC-V) mini-ITX motherboards with specifications and unboxing, and the Auriga 6-Bay NAS mini-ITX chassis used in this review. I planned to start with the Radxa ROCK 5 ITX, but due to logistics and technical issues, I went ahead testing the RISC-V motherboard first. Installing Bianbu OS to the Jupiter RISC-V motherboard The board does not come with storage, so no operating system is installed. So […]

Solder Party’s “RP2350 Stamp” modules features Raspberry Pi RP2350A or RP2350B microcontroller

RP2350 Stamp RP2350 Stamp XL

Solder Party’s RP2350 Stamp is an update to the company’s tiny RP2040 Stamp module based on a Raspberry Pi RP2350A, and they also introduced the RP2350 Stamp XL module that makes use of the extra GPIO pins on the RP2350B, and a “RP2xxx Stamp Carrier XL” carrier board taking either module. RP2350 Stamp and RP2350 Stamp XL The RP2350 Stamp has exactly the same layout as the RP2040 Stamp and mostly benefits from the more powerful Cortex-M33 cores, additional memory, and security features, while the XL variant adds more GPIOs, footprint for a PSRAM chip, as well as UART and SWD connectors. Both come with a 16MB SPI flash for storage. RP2350 Stamp specifications: Microcontroller – Raspberry Pi RP2350A MCU CPU – Dual-core Arm Cortex-M33 processor @ 150MHz Memory – 520KB internal RAM 8KB OTP Storage Package – QFN-60; 7×7 mm Storage – 16MB flash I/Os – All 30x I/Os […]

DFI RPP051 Pico-ITX SBC features 13th Gen Intel Core embedded SoC from Processor U300E to Intel Core i7-1365UE

DFI RPP051 Pico ITX SBC

DFI RPP051 is a 2.5-inch Pico-ITX SBC built around 13th Gen Intel Core processors ranging from the dual-core Intel Processor U300E to the 10-core Intel Core i7-1365UE. It supports up to 32GB DDR5 SO-DIMM memory and accommodates M.2 NVMe and SATA storage devices. Connectivity options include a 2.5GbE LAN port, DP++ and eDP display interfaces, USB 3.2 Gen 2 and USB 2.0 ports, RS-232/422/485 interfaces, along with I2C and GPIO for expansion. The DFI RPP051 first came to our attention while covering the AAEON PICO-RAP4 which is also an SBC with a Pico-ITX form factor, we have also written about many x86 and Arm Pico-ITX boards including AAEON PICO-MTU4, the AAEON RICO-3568, the GIGAIPC PICO-N97A and many other feel free to check them out if you are looking for compact and powerful SBCs. DFI RPP051 Pico-ITX SBC Specification 13th gen Raptor Lake SoC (one or the other) Intel Core i7-1365UE 10C/12T […]

XIAO RP2350 is a tiny USB-C board based on Raspberry Pi RP2350 MCU

XIAO RP2350

The XIAO RP2350 is an upgrade to Seeed Studio’s XIAO RP2040 board with a more powerful Raspberry Pi RP2350 dual-core Cortex-M33 or dual-core RISC-V microcontroller found in the just-launched Raspberry Pi Pico 2 board. The new Raspberry Pi RP2350 USB-C board has the same form factor but adds eight more GPIOs on the bottom with pads for a total of 19 GPIOs, and we lose two LEDs for serial port connectivity. Most people will still be fine with the XIAO RP2040, but if you need a more powerful microcontroller, extra memory, a few extra GPIOs, and built-in security, then the XIAO RP2350 will be an improvement. XIAO RP2350 specifications: Microcontroller – Raspberry Pi RP2350 MCU CPU – Dual-core Arm Cortex-M33 processor @ 150MHz (Note: again RISC-V is not mentioned at all by Seeed Studio, like for the Cytron MOTION 2350 Pro board) Memory – 520KB internal RAM 8KB OTP Storage […]

Cytron MOTION 2350 Pro – A Raspberry Pi RP2350 board for robotics and motor control

Cytron MOTION 2350 PRO

As mentioned in the Raspberry Pi Pico 2 article, third-party RP2350 boards are already available, and one of them is the MOTION 2350 Pro board from Cytron designed for robotics and motor control. The board features a DC motor driver capable of controlling up to 4 brushed DC motors with voltage ratings from 3.6V to 16V. It also features eight 5V servo ports, eight GPIO ports, and three Maker ports for sensor or actuator modules. Each I/O is matched with its own LED which makes the board ideal for the education market and also simplifies debugging. Finally, a USB 1.1 host port is present to connect peripherals such as the RF dongle for a joystick or a keyboard. Cytron MOTION 2350 Pro specifications: Microcontroller – Raspberry Pi RP2350 CPU – Dual-core Arm Cortex-M33 processor @ 150MHz (RISC-V cores are not mentioned, so they are likely not used at all) Memory […]

$5 Raspberry Pi Pico 2 launched with Raspberry Pi RP2350 dual-core RISC-V or Arm Cortex-M33 microcontroller

Raspberry Pi Pico 2

The Raspberry Pi Pico 2 is an MCU development board based on the new Raspberry Pi RP2350 dual-core RISC-V or dual-core Cortex-M33 microcontroller with 520 KB on-chip SRAM, a 4MB flash, a micro USB port for power and programming and the same GPIO headers as the Raspberry Pi Pico board with an RP2040 dual-core Cortex-M0+ microcontroller with 264KB SRAM. The RP2350 embeds both an open-source Hazard3 RISC-V dual-core CPU and a dual-core Cortex-M33, but only one cluster can be used at a given time. Apart from the faster MCU cores and higher SRAM capacity, the RP2350 is about the same as the RP2040, albeit it also adds one extra PIO block bringing the total to three. One important new feature is built-in security when using Arm Cortex-M33 cores with Trustzone and other security features. Raspberry Pi RP2350 microcontroller Let’s have a closer look at the RP2350 microcontroller, before checking out […]

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