Radxa Taco Raspberry Pi CM4 NAS Carrier Board
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Radxa Taco – A Raspberry Pi CM4 carrier board made for NAS with 5x SATA ports

The Radxa Taco is a carrier board for Raspberry Pi CM4 and compatible system-on-modules that is designed for NAS applications with five SATA ports for 2.5-inch or 3.5-inch drives, 2.5GbE and GbE networking, M.2 sockets for expansion, and more. The new board is the successor of the Rock Pi SATA HAT designed for the Raspberry Pi 4 SBC or Raxda Rock Pi 4 single board computers and supports more SATA drives, M.2 NVMe storage, optional WiFi 6, built-in RTC support, and so on. Radxa Taco specifications: Supported SoMs Raspberry Pi CM4 or CM4 Lite Radxa CM3 based on Rockchip RK3566 quad-core Cortex-A55 processor Maybe others Storage 5x SATA interfaces for 2.5-inch HDD or SSD up to 15mm thick, support for 3.5-inch drive via cables, software RAID 0/1/5 1x M.2 M Key 2280  socket for NVMe SSD MicroSD card slot Networking 2.5GbE RJ45 port Gigabit Ethernet RJ45 port Optional WiFi 6 […]

Raspberry Pi RP2040 rotary encoder board
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Raspberry Pi RP2040 development board doubles as a magnetic rotary encoder

PICO DEV M3 is a round-shaped development board based on a Raspberry Pi RP2040 dual-core microcontroller and serves as a magnetic rotary encoder with a few 3D printed parts. Designed by Ahmsville Labs, the board comes with 2MB QSPI flash, various through holes for GPIOs, a USB-C port, and the magnetic rotary encoder supports up to 36,000 steps per revolution and comes with 18 individually addressable LEDs. PICO DEV M3 development board specifications: Microcontroller – Raspberry Pi RP2040 dual-core Arm Cortex-M0+ MCU at 133 MHz with 264kB on-chip SRAM Storage – 2MB QSPI flash USB – 1x USB 1.1 Type-C host/device port Encoder Base resolution of 36 steps, extending up to 36,000 steps per revolution. Ring of 18x individually addressable LEDs Encoder button Ball bearing for a smoother feel compared to traditional rotary encoders Customizable 3D printed encoder Expansion – Through holes placed on the edge of the board for: […]

Graperain Samsung, Rockchip, and Qualcomm CPU modules, SBCs, and carrier boards
LOLIN S3 Pro
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LOLIN S3 Pro ESP32-S3 board offers display port, MicroSD card slot

LOLIN S3 Pro is a WiFi & Bluetooth LE IoT board built around the ESP32-S3-WROOM-1 modules with various I/Os including a display port, a microSD card slot, and a LOLIN I2C connector. The wireless module ships with 16MB QSPI flash and 8MB PSRAM, and the board also features two 16-pin headers with ADC, DAC, I2C, SPI, UART, etc…, a USB Type-C port, and support for a LiPo batteries with 500mA charging.   LOLIN S3 Pro specifications: Wireless module – ESP32-S3-WROOM-1 module with: Espressif Systems ESP32-S3 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 2.4 GHz WiFi 4 and Bluetooth 5.0 LE with support for long-range, up to 2Mbps data rate, mesh networking 16MB QSPI flash 8MB PSRAM PCB antenna Storage – MicroSD card socket Display I/F – Display port for “TFT and EPD” displays USB – 1x USB Type-C port Expansion 2x […]

Raspberry Pi 4 SBC ESP32 RP2040 MCU
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EsPiFF board combines ESP32 module with RP2040 MCU in the Raspberry Pi 4 form factor (Crowdfunding)

The EsPiFF board may look like a Raspberry Pi 4 Linux SBC but it is equipped with an ESP32-WROVER WiFi and Bluetooth module together with a Raspberry Pi RP2040 microcontroller that acts as a co-processor. The goal here is to provide a Raspberry Pi 4 replacement for applications that require higher reliability and even 24/7 operation without necessarily needing the processing power and multimedia capabilities of the Broadcom BCM2711 Arm processor found in the Pi or the versatility of a Linux operating system. EsPiFF board specifications: Wireless module – ESP32-WROVER module with dual-core ESP32-D0WDQ6 microcontroller with 2.4 GHz WiFi 4 and Bluetooth, 8 MB PSRAM and 16 MB flash Co-processor – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133 MHz with 16MB flash used to emulate the Raspberry Pi’s GPIOs on the 40-pin header Additional storage 2 KB of fast FRAM for permanent storage of process data. (faster […]

Radxa E25 router
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Radxa E25 modular 2.5GbE router supports WiFi 6 and 4G/5G cellular connectivity

Radxa E25 is a modular router with two 2.5GbE ports based on the Radxa CM3 Industrial (CM3I) system-on-module equipped with a Rockchip RK3568 quad-core Cortex-A55 processor, and optional support for WiFi 6 and 4G or 5G cellular connectivity. I got an early sample of the Radxa E25 carrier board in January, but the company has now refined the design with version 1.4 of the board and will launch the Radxa E25 as a complete router with an enclosure similar to NanoPi R5S and LinkStar H68K we’ve covered previously. Radxa E25 specifications: SoM – Radxa CM3I with Rockchip RK3568 quad-core Cortex-A55 processor @ 2.0 GHz with Arm Mali-G52, up to 8GB RAM, up to 128GB eMMC flash (250MB/s max), optional WiFi and Bluetooth Storage – MicroSD card socket, M.2 SATA 2242 SSD (multiplexed with 4G) Networking 2x 2.5GbE ports via Realtek RTL8125B 2.5 Gbps Ethernet transceiver (Tested by Radxa at 2.2 […]

AIR32F103 development board
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Air32F103 is a clone of STM32F103 clocked at up to 216 MHz

Air32F103 is yet another clone of the STM32F103 microcontroller that can be faster if needed with a clock of up to 216 MHz instead of 72 MHz for the original STMicro STM32 Arm Cortex-M3 microcontroller. The first SKU of the family is the Air32F103CBT6 whose peripherals and hardware design are compatible with equivalent STM32F103CBT6 parts and offered with 32KB RAM and 128KB flash. There’s also a Bluepill-like development board, but with a different pinout, made by LuatOS. Documentation for the board and microcontroller can be found in a Wiki including the MCU datasheet that indicates models with 256KB flash and 64KB SRAM (Air32F103CCT6) and 96KB SRAM (Air32F103RPT6). Since the wiki is in Chinese only, you may want to head over a post in English on Chowdera to learn how to get started with the Keil IDE using code hosted on Gitee. The chip and board were also spotted on EEVBlog […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
StarFish Raspberry Pi RP2040 PnP control board
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Starfish PnP machine control board combines Raspberry Pi RP2040 MCU with TMC2209 motor drivers

We’ve already seen the Raspberry Pi RP2040 MCU in a 3D printer controller board, so it should come as no surprise that the dual-core microcontroller also found its way into a Pick-and-Place (PnP) machine control board. Designed by Thea Flowers, the Starfish board leverages the RP2040 MCU capabilities to control three Trinamic TMC2209 motor drivers, MOSFET drivers to control DC vacuum pumps, two vacuum sensors, and offer RS485 and I2C connectivity for feeders and peripherals respectively. Starfish specifications: MCU – Raspberry Pi RP2040 dual-core Cortex M0+ microcontroller at up to 133 MHz with 264 kB of embedded SRAM Storage – QSPI flash Motor drivers – 3x TMC2209 drivers for X, Y1, and Y2 MOSFETs – 2x MOSFETs to control the 2x vacuum pumps Valve drivers – 2x TI DRV120 single-channel relay, solenoid, and valve drivers to control two pneumatic solenoid valves Sensors – 2x CFSensor XGZP6857D I2C pressure sensor modules […]

AirGradient DIY air quality monitor
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DIY air quality monitor is based on Wemos D1 mini ESP8266 board, Sensirion SGP41 TVOC sensor

Open AirGradient is a DIY air quality monitor based on the Wemos D1 mini ESP8266 WiFi IoT board programmed with Arduino and fitted with a range of sensors including an optional Sensirion SGP41 TVOC sensor through a custom PCB designed with EasyEDA. Two versions of Open AirGradient are available. The Basic model includes an OLED display, a Plantower PMS5003 PM sensor, a Senseair S8 CO2 sensor, and SHT30 or SHT31 temperature & humidity sensor, while the Pro version adds a larger display, a plastic enclosure, and support for the SGP41 TVOC sensor. Open AirGradient key components: MCU board Basic – Wemos D1 Mini Pro Pro – Lolin D1 Mini v4 with USB-C port Display Basic – Wemos OLED shield Pro – 1.3-inch OLED display Sensors Plantower PMS5003 PM sensor Senseair S8 CO2 sensor SHT30 or SHT31 temperature and humidity sensor module Optional Sensirion SGP41 TVOC & NOx sensor (Pro version […]

Boardcon LGA3576 Rockchip RK3576 System-on-Module designed for AI and IoT applications