HUB75 RGB Matrix Raspberry Pi 5
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Adafruit’s PioMatter library adds HUB75 RGB LED Matrix support to the Raspberry Pi 5

The Raspberry Pi 5 brought a more powerful CPU and GPU and faster I/Os compared to the Raspberry Pi 4, as well as some incompatibilities. While the transition from a Raspberry Pi 4 to a Raspberry Pi 5 is usually painless for most applications, Adafruit notes that the ability to drive HUB75 RGB LED matrices was lost on the Raspberry Pi 5 which now relies on the Raspberry Pi RP1 peripheral control to drive GPIOs instead of the Broadcom processor directly controlling them. The company has now addressed that by using the PIO (Programmable I/O) block in the RP1 chip, yes that’s the same PIOs as found in the RP2040 or RP2350 microcontroller, to drive HUB75 RGB LED matrices from the Raspberry Pi 5, and their work can be found on the Adafruit-Blinka-Raspberry-Pi5-Piomatter repository on GitHub. The instructions to install the Adafruit Blinka Raspberry Pi 5 PioMatter library (or just […]

ESP32 CAM robot car with off-the-shelf parts
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Build a four-wheel RC car with ESP32-CAM board and off-the-shelf parts

While there are plenty of ESP32-based wireless-controlled robot cars with a built-in camera, like the PiCar-X 2.0 or Zeus Car, it might be more fun and rewarding to build something yourself. That’s exactly what Matt Sroufe did by building his own RC car using off-the-shelf parts and an ESP32-CAM board and writing firmware for it. To get started with the build, you’ll need six main components: A 4-wheel car chassis – $47.49 on AliExpress Electronic speed controller  – $5.27 on AliExpress. Matt selected the 30A version with green PCB. Dual-battery holder for about $2 on AliExpress 2x 18650 3.6V cells or 7.4V batteries purchased locally ESP32-CAM board with an external antenna and the 160° FoV camera – About $14 with board, camera, and external antenna. Bluetooth gamepad such as a PS4 controller The total should be around $80 with the batteries assuming you already own a Bluetooth gamepad. You’ll need […]

ArmSoM RK3588 AIModule7 NVIDIA Jetson Nano-compatible SOM
ROCK 5T
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Radxa ROCK 5T SBC packs ROCK 5 ITX mini-ITX motherboard’s features onto a 110x80mm PCB

Radxa ROCK 5T is yet another Rockchip RK3588 SBC whose main selling point is to pack most features of the ROCK 5 ITX mini-ITX motherboard (170x170mm) into a much smaller 110x80mm board. The board features up to 32GB RAM, M.2 2280 sockets for NVMe SSDs, four independent display outputs via HDMI, USB-C, and MIPI DSI, HDMI input and camera interfaces, two 2.5GbE RJ45 jacks, on-board WiFi 6/6E and Bluetooth 5.x, and an M.2 Key-B socket for cellular connectivity. Radxa ROCK 5T specifications: (with differences highlighted in bold or strikethrough) SoC – Rockchip RK3588 or RK3588J (industrial grade) CPU – Octa-core processor with four Cortex-A76 cores @ up to 2.2 GHz (industrial) / 2.4 GHz (commercial), four Cortex-A55 cores @ up to 1.8 GHz GPU – Arm Mali G610MC4 GPU VPU 8Kp60 10-bit H.265 / VP9 / AVS2  / AV1 decoder, 8Kp30 H.264  decoder 8Kp30 H.265 / H.264 encoder AI accelerator […]

Interstate 75 W RGB LED Matrix Driver board
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Pimoroni Interstate 75 W (RP2350) board is designed for HUB75 LED matrix panels

Pimoroni Interstate 75 W (RP2350) is an all-in-one RGB LED matrix driver board designed for HUB75 LED matrix panels commonly used in video walls, advertising displays, and creative signage. Built around a Raspberry Pi RP2350 chip this board also uses the Raspberry Pi’s CYW43439 module for Wi-Fi and Bluetooth and features user buttons, an RGB LED, and a Qw/ST connector for integration with Qwiic/STEMMA QT breakouts. The kit is compatible with various LED matrix sizes (32×32, 64×64, etc.) and comes in a starter kit with panels, cables, and magnetic feet for quick setup. All these features make this kit useful for applications including real-time data like bus times, air quality, or sensor outputs, dynamic signage, scrolling text, and more. Pimoroni Interstate 75 W (RP2350) specifications: SoC – Raspberry Pi RP2350A CPU Dual-core Arm Cortex-M33 @ 150 MHz with Arm Trust zone, Secure boot OR Dual-core RISC-V Hazard3 @ 150 MHz Up […]

WeAct RP2350B Core Board
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Tiny WeAct RP2350B Core Board exposes all 48 I/Os from the Raspberry Pi RP2350B microcontroller

WeAct RP2350B Core Board is a small (41.4×41.1mm) USB-C board exposing all 48 I/Os from the Raspberry Pi RP2350B Cortex-M33/RISC-V microcontroller through two 30-pin headers. It offers an alternative to the smaller Solder Party’s RP2350 Stamp XL (44.5 x 25.4 mm) with through and castellated holes and no USB-C port that’s better suited for soldering on a baseboard and to Olimex PICO2-XL and PICO2-XXL open-source hardware boards (50 x 28 mm). WeAct RP2350B Core Board specifications: Microcontroller – Raspberry Pi RP2350B MCU CPU – Dual-core Arm Cortex-M33 processor @ 150MHz Memory – 520KB internal RAM 8KB OTP Storage Package – QFN-80; 10×10 mm Storage 16MB QSPI flash Footprint for a second QSPI FLASH/PSRAM on the bottom side I/Os – All 48x GPIOs broken out via 2x 30-pin headers 2x UART, 2x SPI, 2x I2C 24x PWM 8x ADC 12x PIO state machines HSTX peripheral 5V, 3.3V, VREF, and GND Debugging […]

AAEON GENE-MTH6 3.5-inch meteor lake SBC
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AAEON GENE-MTH6 3.5-inch Meteor Lake SBC offers up to 96GB of DDR5, 9-36V wide power input, PCIe Gen4 FPC connector

AAEON GENE-MTH6 Intel Meteor Lake-powered 3.5-inch “Subcompact” SBC takes up to 96GB DDR5, offers an ERP-compliant 9V-36V wide power input range, and includes an unusual PCIe Gen4 x4 FPC connector to add an M.2 expansion module, or other custom modules. The board also features two 2.5GbE and one GbE port, supports WiFi 6 and 5G via M.2 sockets, a SATA port and an M.2 socket for storage expansion, four display interfaces, a few USB ports, four internal COM ports for RS232 and/or RS485, and more. It is offered with either 15W U-Series (Intel Core Ultra 5 125U / Core Ultra 7 155U) or 28W H-series (Intel Core Ultra 5 125H / Core Ultra 7 155H) processors. AAEON GENE-MTH6 specifications: Meteor Lake SoC (one or the other) Intel Core Ultra 7 155H 16-core/22-thread processor up to 4.8 GHz with 24MB cache, Intel 8Xe LPG graphics @ 2.25 GHz, Intel AI Boost […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
Raspberry Pi RP2350 board with USB-A port
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RP2350-USB-A – A Raspberry Pi RP2350 board with an extra USB Type-A port using a PIO implementation

Waveshare RP2350-USB-A is a small Raspberry Pi RP2350  board with a USB-C port for power and programming and a USB-A port to use the board as a USB device or host through a programmable IO (PIO) implementation. The board also features an RGB LED and two GPIO headers, which could make it useful for controlling GPIO/I2C/UART/SPI-connected devices when connected to a USB keypad or similar input. Alternatively, it could emulate a keyboard, mouse, or other USB device when connected to a host. RP2350-USB-A specifications: SoC – Raspberry Pi RP2350A MCU CPU Dual-core Arm Cortex-M33 @150MHz with Arm Trustzone Dual-core 32-bit Hazard3 RISC-V @ 150MHz Up to two cores can be used at the same time Memory – 520KB SRAM Storage – 2MB SPI flash for firmware USB USB Type-A port connected to GPIO12, GPIO13, 5V, and GND USB 1.1 Type-C port for power and programming Expansion – 2x 9-pin 2.54mm […]

Credit card-sized ESP32 quad relay board
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Credit card-sized quad relay board runs Tasmota firmware on ESP32 module (Crowdfunding)

The “ESP32 IoT Relay Board” is a credit card-sized ESP32 board with four small 250VAC/30VDC 7A relays that runs Tasmota open-source firmware and supports Alexa & Google Assistant for voice control. There are so many ESP32-based relay boards on the market that I don’t usually feel the need to cover new ones, but Igor Mileshin’s ESP32 IoT Relay Board is smaller than most so I thought it might be interesting to some. The smallest quad-channel relay board I’ve seen so far is the one by Seeed Studio using an STM32 MCU and solid-state relays that measures just 60 x 40mm, but the relays only support up to 2A. ESP32 IoT Relay Board specifications: Wireless module – ESP32-WROOM-32D SoC – Espressif ESP32-D0WD dual-core Tensilica LX6 processor @ 240 MHz Storage – 32Mbit SPI flash Connectivity – Wi-Fi 802.11 b/g/n up to 150 Mbps, Bluetooth 4.2/5.x LE Relays 4x “industrial-grade” relays supporting […]

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