Posted on

How to Control Your Air Conditioner with Raspberry Pi Board and ANAVI Infrared pHAT

Leon ANAVI may be a full-time software engineer, but in his spare time he has started to develop open source hardware project with the help of others and by himself. Last year, I got hold of his RabbitMax Flex HAT for Raspberry Pi, and tested it with the provided LCD display, one temperature sensor, and a Raspberry Pi 2 board. The board also featured IR receiver & transmitter, and I tried to use it with my aircon remote control, but at the time I did not find a way to do it easily, and control my TV with LIRC instead. Leon has now made a simpler, smaller, and cheaper add-on board for Raspberry Pi Zero, and other Raspberry Pi boards with a 40-pin header, with 3x I2C headers, two IR transmitters, and one IR receiver. He sent me a sample of “ANAVI Infrared pHAT”, and after quickly describing the board, […]

Posted on

FOSDEM 2024 schedule – Open-source embedded, mobile, IoT, robotics, RISC-V, etc..

FOSDEM – which stands for Free and Open Source Software Developers’ European Meeting – is a free-to-participate event where thousands of developers meet in Brussels on the first week-end of February to discuss open-source software & hardware projects. FOSDEM 2024 will take place on February 3-4 with 880 speakers, 818 events, and 66 tracks. Although I won’t attend, I’ve created a virtual schedule like every year with sessions most relevant to the topics covered on CNX Software from the “Embedded, Mobile and Automotive” and “Open Hardware and CAD/CAM” devrooms, but also other devrooms including “FOSS Mobile Devices”, “ Energy: Reimagining this Ecosystem through Open Source”, “RISC-V”, and others. FOSDEM Day 1 – Saturday, February 3, 2024 10:30 – 10:55 – Screen Sharing on Raspberry Pi 5 Using VNC in Weston and Wayland with the Yocto Project and OpenEmbedded by Leon Anavi In 2023, embedded Linux developers received eagerly awaited news: […]

Khadas Edge2 Arm mini PC
Posted on

Mixtile Core 3588E SoM review – Part 2: Ubuntu 22.04, hardware features, RK3588 AI samples, NVIDIA Jetson compatibility

We’ve already had a look at the Mixtile Core 3588E NVIDIA Jetson Nano/TX2 NX/Xavier NX/Orin Nano compatible Rockchip RK3588 SO-DIMM system-on-module in the first part of the review with an unboxing and first boot with an Ubuntu 22.04 OEM installation. I’ve now had more time to play with the devkit comprised of a Core 3588 module in 16GB/128GB configuration and a Leetop A206 carrier board with low-level features testing, some benchmarks, multimedia testing with 3D graphics acceleration and video playback, some AI tests using the built-in 6 TOPS NPU and the RKNPU2 toolkit, and finally I also tried out the system-on-module with the carrier board from an NVIDIA Jetson Nano developer kit. Ubuntu 22.04 System info We had already checked some of the system information in the first part of the Mixtile Core 3588E review, but here’s a reminder:

I also ran inxi to check a few more details. […]

Posted on

T-Keyboard-S3 4-key USB mechanical keyboard features keycaps with 0.85-inch color display

LILYGO T-Keyboard-S3 is an ESP32-S3 powered USB mechanical keyboard with four keys each equipped with a keycap featuring a 0.85-inch 128×128 color display to show different icons or characters. We have already covered several programmable small mechanical keyboards/keypads or macropads, so the first time I saw the T-Keyboard-S3 I did not think much of it until I read the $65 price tag on Aliexpress which I found excessive for this type of device. That’s only until I realized that each resin keycap has its own color display that the price made sense, and it makes quite a versatile macropad as you could easily program multiple layouts depending on the use case. T-Keyboard-S3 specifications: Wireless module ESP32-S3-WROOM-1 MCU – ESP32-S3R8 dual-core LX7 microprocessor @ up to 240 MHz with Vector extension for machine learning Memory – 8MB PSRAM Storage – 16MB SPI flash Connectivity – WiFi 4 and Bluetooth 5 with LE/Mesh […]

Posted on

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: […]

Posted on

FOSDEM 2022 schedule with embedded Linux, IoT, automotive… sessions

While typically taking place in Brussels, Belgium, FOSDEM 2022 will take place online just like FOSDEM 2021 due to COVID-19 restrictions. The good news is that it means anybody can attend it live from anywhere in the world, and makes it more like “FOSDIM”, replacing European with International, in “Free and Open Source Developers’ European Meeting”. FOSDEM 2022 will take place on February 5-6 with 637 speakers, 718 events, and 103 tracks. I’ve made my own little virtual schedule below mostly with sessions from the Embedded, Mobile and Automotive devroom, but also other devrooms including “Computer Aided Modeling and Design”, “FOSS on Mobile Devices”, “Libre-Open VLSI and FPGA”, and others.   Saturday, February 5, 2022 12:30 – 13:00 – Five mysteries in Embedded Linux by Josef Holzmayr Once you start out in embedded Linux, there is a lot to do. Some things are obvious, some less so. First and foremost, […]

Advertisement

Posted on

2-key mechanical USB keypad runs QMK firmware (Crowdfunding)

System76 Launch high-end customizable keyboard for PC’s that we covered earlier this week, and ANAVI Macro Pad 2 2-key mechanical USB keypad should not have anything in common, but they do to some extent. Both happen to feature backlit mechanical keys, are open-source hardware, and run the same Quantum Mechanical Keyboard Firmware (QKM) open-source firmware. ANAVI Macro Pad 2 specifications: MCU – Microchip ATtiny85 8-bit AVR microcontroller with 8 KB ISP Flash memory, 512 bytes EEPROM, 512 bytes SRAM Keys – Two Gateron Red mechanical switches with 3 mm LED backlighting and translucent keycaps Host connection – MicroUSB port Dimensions – 40×38 mm OSHWA certification – BG000077. ANAVI Technology says the key is compatible with Windows, MacOS, and GNU/Linux support, but as a USB keypad, it should probably just work with any host device supporting the USB HID class. ANAVI Macro Pad 2 is a smaller version of the earlier […]

Posted on

PixelBlaze v3 WiFi LED board supports live-coding via a web interface (Crowdfunding)

We’ve previously covered a couple of ESP8266 WiFi boards to control LED strips from ANAVI Technology ESP8266 powered ANAVI Miracle Controller and ANAVI Light Controller Starter Kit, but Ben Henke has also made similar ESP8266 LED controllers with PixelBlaze boards. The latest iteration – PixelBlaze v3 – is based on ESP32 WiSoC and comes in two variants: PixelBlaze v3 Standard with headers and PixelBlaze V3 Pico in a much tinier form factor (33.3 x 11mm) with both models supporting live-coding via a web interface. PixelBlaze v3 specifications: Wireless SiP or module Standard – ESP32-WROOM-32 module with Espressif ESP32 dual-core processor @ 240 MHz with 4MB flash Pico – ESP32-PICO-D4 system-in-package with Espressif ESP32 dual-core processor @ 240 MHz with 4MB flash 4-pin header with VCC, GND, DATA, CLK for LED matrix or strip Compatible with APA102, SK9822, DotStar, WS2811, WS2812 (up to 2,500 LEDs), WS2813, WS2815, NeoPixel, and WS2801 actively […]

Khadas VIM4 SBC