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October 5, 2022October 5, 2022

RelayFi – A Tasmota compatible 4-channel relay board (Crowdfunding)

CoreData Global, a Singapore-based research and development firm, has just introduced the RelayFi 4-channel relay board based on ESP32 and compatible with Tasmota open-source firmware, as well as Espressif’s ESP RainMaker cloud and ESP-NOW networking API. RelayFi is fitted with an ESP32-WROOM-32D WiFi and Bluetooth module, four relays capable of handling a load of 250 VAC/7A or 30 VDC/10A, and EL817C Optoisolators for safety. The board also comes with CH340C USB to TTL chip for programming, an I2C header for expansion, and some jumpers for relay selection. RelayFi specifications: Wireless module – Espressif Systems’ ESP32-WROOM-32D module with ESP32 dual-core Tensilica microcontroller, 32Mbit SPI flash, Wi-Fi 802.11 b/g/n up to 150 Mbps, Bluetooth 4.2 LE, and PCB antenna Relays 4x relays up to 250VAC/7A or 30VDC/10A 4x EL817C optocouplers for safety 4x relay status LEDs Screw terminals Relay selection jumper USB – 1x micro USB port for power and programming via […]

October 5, 2022October 5, 2022

The BBC has released a new web-based Python editor for the micro:bit board

There are already Python editors such as Thonny, but the BBC thought those were not good enough and released a new web-based Python editor specifically designed for the micro:bit education board targeting 11 to 14 years old pupils. The micro:bit Python editor includes drag and drop code examples, code structure & error highlighting, auto-complete feature, a simulator to test the code before uploading it to the micro:bit board, and a Quick ideas section to help pupils get started with projects. The BBC’s micro:bit Python editor works with both the micro:bit V1 and V2, but note the simulator shows a micro:bit V2, so if you are using the previous generation micro:bit, some code may work on the simulator but not on your micro:bit V2 board. For that reason, the BBC marked the code that only works on a micro:bit V2 with ‘V2’ in the Reference section. While the BCC is a […]

Graperain Samsung, Rockchip, and Qualcomm CPU modules, SBCs, and carrier boards

September 30, 2022September 30, 2022

ESP32 DevKitC V4 IoT development board ships with ESP32-WROOM-DA dual antenna module

The ESP32 DevKitC V4 is now selling with the ESP32-WROOM-DA module with two PCB antennas that was introduced last year in order to offer a longer WiFi range and better reliability. The development kit is exactly the same as the other ESP32 DevKitC V4 models, and the only difference is the dual antenna design. When running a recent version of the Arduino Core for the ESP32 (2.0.3 or greater), the ESP32 will automatically switch to the antenna with the strongest signal in order to deliver the best connectivity possible. ESP32 DevKitC V4 specifications: Wireless module – ESP32-WROOM-DA (PDF datasheet) with SoC – Espressif Systems ESP32-D0WD-V3 dual-core LX6 microprocessor with 520 KB SRAM, 2.4 GHz WiFi 4 and Bluetooth 4.1 connectivity Storage – 4MB SPI flash Two PCB antennas (ANT1 and ANT2) USB – 1x Micro USB port for power, programming, and debugging through USB-to-UART bridge up to 3 Mbps Expansion […]

September 28, 2022

Raspberry Pi RP2040 gets into BBC Micro:bit lookalike board

ELECFREAKS Pico:ed V2 is a Raspberry Pi RP2040 board heavily inspired by the BBC Micro:bit with an edge connector exposing rings suitable for crocodile clips, a 17×7 LED matrix display, and designed for the classroom. We’ve seen several BBC Micro:bit clones – or rather adaptations – over the years with boards such as the SiFive Learn Inventor, Elecrow Mbits, and HiHope “Big Brother” board. The Pico:ed V2 adds to the list, and the main differences are that it is based on the Raspberry Pi RP2040 microcontroller instead, and does not come with wireless connectivity relying on a USB interface only. ELECFREAKS Pico:ed V2 specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133Mhz with 264kB of SRAM Storage – 2MB QSPI flash Display – 17×7 dot-matrix display USB – 1x micro USB 1.1 port for power, data, and programming I/Os 25-pin notched “Wavy” connector with up to […]

Banana Pi BPI-PicoW-S3 Raspberry Pi Pico W alternative

September 26, 2022

$5.5 Banana Pi BPI-PicoW-S3 ESP32-S3 board follows Raspberry Pi Pico W form factor

Banana Pi’s BPI-PicoW-S3 is a development board following the Raspberry Pi Pico W form factor, but based on Espressif System ESP32-S3 dual-core microcontroller offering both WiFi 4 and Bluetooth LE connectivity. The Raspberry Pi SBCs have inspired many designs, but the Raspberry Pi Pico MCU boards less so. So far, I had only seen the WeAct RP2040 board with the same layout except for a USB Type-C port and a 16MB flash. But the Banana Pi BPI-PicoW-S3 provides a direct alternative to the Raspberry Pi Pico W with a more powerful microcontroller, vector instructions for AI acceleration, BLE, and about the same price at $5.5 plus shipping. Let’s see how the BPI-PicoW-S3 specifications compare to the ones of the Raspberry Pi Pico W in the table below. While the power signal (5V, 3.3V, GND) and GPIO numbers are the same on both boards, there are a few variations here and […]

September 26, 2022September 29, 2022

Bee S3 ultra-low-power ESP32-S3 board can last several years on a LiPo battery

Smart Bee Designs’ Bee S3 is an ultra-low-power development board based on Espressif ESP32-S3 WiFi & Bluetooth microcontroller that consumes less than 20 uA in deep sleep mode allowing the board to theoretically last over 5 years under specific conditions. The board provides WiFi 4 and Bluetooth 5 LE connectivity, features a battery voltage monitoring circuitry to check the battery charge level, a USB Type-C port for power and programming, plus 20 through holes for extensions such as connecting sensors, and so on. Bee S3 specifications: Wireless module – Espressif Systems ESP32-S3-MINI-1 module (PDF datasheet) with ESP32-S3 dual-core Xtensa LX7 processor with WiFi 4 and Bluetooth 5.0 connectivity, 4MB or 8MB QSPI flash, PCB antenna USB – 1x USB Type-C port for power and programming Expansion – 2x 10-pin headers with up to 15x GPIO, 8x ADC, touch support, I2C, SPI, UART, 5V In/out, 3.3V out, and GND Misc – […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025

Raspberry Pi 400 Keyboard PC alternative

September 24, 2022September 25, 2022

Orange Pi 800 Keyboard PC – A Raspberry Pi 400 alternative powered by Rockchip RK3399

There’s now a Raspberry Pi 400 alternative with the Orange Pi 800 Keyboard PC that offers a very similar design, but it is powered by a Rockchip RK3399 hexa-core Cortex-A72/A53 processor. Like the Raspberry Pi model, the Orange Pi 800 comes with 4GB RAM, Gigabit Ethernet, dual-band WiFi 5 and Bluetooth 5.0, two USB 3.0 ports, and one USB 2.0 port, but it also adds 64GB on-board flash storage and features one full-size HDMI port capable of 4Kp60 resolution plus a VGA port, instead of two micro HDMI ports. Orange Pi 800 specifications: SoC – Rockchip RK3399 hexa-core big.LITTLE processor with 2x Arm Cortex-A72 cores up to 1.8GHz, 4x Arm Cortex-A53 cores up to 1.4GHz, and an Arm Mali-T860MP4 GPU System Memory – 4GB LPDDR4 Storage – 64GB eMMC flash, microSD card slot Video Output HDMI 2.0 port up to 4Kp60 VGA port up to Full HD resolution Audio 3.5mm […]

September 24, 2022January 22, 2023

UP 4000 x86 SBC review – Part 1: Unboxing and first boot

AAEON UP 4000 is a compact Apollo Lake single board computer that’s about the size of a business card or a Raspberry Pi designed for automation, robotics, digital signage, and other space-constrained applications that may benefit from an x86 processor. The company already published some Phoronix benchmarks comparing the UP 4000 SBC against Raspberry Pi 4, NVIDIA Jetson Nano, and the original UP board, but since nothing beats third-party evaluation, AAEON sent a review sample to CNX Software for additional testing. UP 4000 SBC unboxing There are several variants of the board, and I received the UP-APL03X7F-A10-0464 SKU with 4GB RAM, 64GB eMMC flash, and an Intel Atom x7-E3950 quad-core processor. The package includes the board together with a multilingual safety manual that explains you should not immerse the board underwater and should avoid walking on it :). A 12V/5A power supply was also included separately. The power cord was […]