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Raspberry Pi 4 WiFi Fails When Setting HDMI to 2560×1440 Resolution

Enrico Zini was working on a digital signage solution based on Raspberry Pi 4, then he set the video output to 2560×1440, and all hell broke loose. And by that, I mean WiFi stopped working. It was not obvious at first but after a full day of debugging, trying both micro HDMI outputs, different HDMI cables, three different Raspberry Pi boards, different power adapters, Raspbian Buster and Buster Lite, different MicroSD cards… He could reproduce the problem in all conditions, all he needed to do was to set the resolution to 2560×1440, and WiFi would just stop working. Setting the resolution to 2048×1080 or lower, and all WiFi connectivity issues disappeared. He did not test at higher resolutions, and another user reported a similar problem happening at 2.4 GHz, but not at 5 GHz, albeit when setting HDMI output to 1920×1080. So it looks like interference, but as noted by […]

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DepthAI Brings AI plus Depth to the Raspberry Pi (Crowdfunding)

Edge computing on the Raspberry PI has been a bit of ups and downs, especially with everyone gearing for AI in everything. The Raspberry Pi, on its own, isn’t really capable of any reliable AI applications. Typical object detection on the Raspberry Pi would get you something around 1 – 2 fps depending on the nature of your model and this because all those processing is done on the CPU. To address this poor performance of AI applications on the Raspberry Pi, AI Accelerators came to the rescue. The Intel Neural Compute Stick 2 is one such accelerator capable of somewhere around 8 – 15 fps depending on your application. The NCS2, which is based on the Myriad X VPU technology, offers so much more than the compute stick delivers, and this is something that the team behind DepthAI has exploited to create a powerful AI module for edge computing […]

Khadas Edge2 Arm mini PC
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Fix for Raspberry Pi 4 4GB model’s USB Ports not Working on Ubuntu 19.10

Ubuntu 19.10 server was recently released with official support for Raspberry Pi 4 SBC. Shortly after I read stories about the USB ports not working on the board, but it took another interesting turn as Canonical now explains the bug only affects RPI 4 with 4GB RAM, and USB works just fine on boards with just 1/2GB RAM. The issue has been identified and it’s been found to be a kernel bug with a solution in the works that being tested. In the meantime, you can access to your Raspberry Pi 4 4GB USB ports by limiting the memory to 3GB in /boot/firmware/usercfg.txt as follows:

Alternatively here’s the link to an updated kernel provided by Hui Wang with you want to test it out: I built a testing kernel, not only includes the fix for USB host, but also includes all new patches from https://github.com/raspberrypi/linux.git rpi-5.3.y branch (about 107 […]

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py-videocore6 Raspberry Pi 4 GPGPU Python Library Leverages VideoCore 6 GPU

Raspberry Pi 4 SBC was released at the end of June with a new Broadcom BCM2711B SoC that also includes VideoCore 6 (VC6) GPU for 2D and 3D graphics, and that could also be used for general-purpose GPU computing (GPGPU). In the past we’ve seen companies such as Idein leveraged VideoCore 4 GPGPU capabilities in Raspberry Pi 3 / Zero to accelerate image recognition, and they released a python library (py-videocore) for that purpose. The problem is that the VideoCore 6 GPU found in RPi 4 is quite different than the VideoCore 4 GPU in earlier versions of the Raspberry Pi Foundation board as forum member phiren explains: I’ve been looking though the open source drivers and here are some of my observations: vc6 is clearly derived from vc4, but it is significantly different. vc6 is only a slight extension over vc5 The QPU pipeline stays mostly the same, you […]

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Novasom M7+ SBC Adds FFC HDMI Connector, USB & RS-485 Headers, Improves on Raspberry Pi 3 SW Compatibility

We previously wrote about Novasom M7 Rockchip RK3328 SBC being promoted as a drop-in replacement for Raspberry Pi 3 in industrial projects. That’s despite the different port arrangement, and instead, the company bases the claim on the availability of the 40-pin header, mounting holes matching RPI 3 board design, as well as software compatibility thanks to a library that allows customers to re-use the code written for Raspberry Pi boards. Based on feedback from customers, the company has made some changes to their design and launched Novasom M7+ SBC, and made several improvement to the software to be even more compatible with Raspberry Pi 3 board. Specifically there are five changes: Ability to power the board via the USB type-A port (5V) as an alternative to the 12V power barrel jack Stronger Backlight Driver for display  up to 6A @5V) t FFC cable for HDMI output – The dimension of […]

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Nubix Edge-native Tiny Containers for IoT Apps Released For Raspberry Pi and BeagleBone SBCs

Nubix has just launched the developer edition of its edge-native tiny containers for IoT application development and analytics that target microcontrollers and single-board computers such as Raspberry Pi 3/4 and BeagleBone Black. Typical cloud solutions such as Docker are often too large with tiny IoT devices, and to solve these issues, Nubix tiny containers are sized in kilobytes, instead of megabytes, or about 100 times smaller than a Docker container, in order to be small enough to run at the edge. Nubix.io provides access to a library of sensors, analytics and tiny services that leverage open source languages and pre-packaged functions to easily create IoT applications in a few minutes. Analytics is commonly done in the cloud, which may cause issues in environments with limited or intermittent connectivity, so to solve this issue, Nubix provides analytics functionality directly on the IoT device, eliminating the latency, bandwidth, connectivity and cost constraints […]

Rockchip RK3568/RK3588 and Intel x86 SBCs
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Raspberry Pi 4 Digital Signage Solution Supports 4K HEVC Video and Dual Display Setups

4K H.265 & dual-display digital signage for Raspberry Pi 4 The Info-Beamer, the company that started as a for-fun project at a hacker conference and turned into a now growing business has developed the first Raspberry Pi 4 OS that can use the HEVC (H.265) decoding system and support dual-display setups. The latest info-beamer hosted version 11 (aka hosted 11) is designed for 4K video quality digital signs, and the two HDMI ports on the Raspberry Pi 4 can be used simultaneously for mirrored output on two displays or span two video displays on digital signs. The company has reported that this solution can work on a video wall, like the info-beamer magic video wall. Previous Info-Beamer Previously there was an info-beamer hosted 10 released in February 2019 and that version is still applicable if wanted.  All versions of Raspberry Pi are still supported but the OS 11 release focuses […]

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MaaXBoard NXP i.MX 8M Raspberry Pi Compatible Board Runs Android 9.0 or Yocto Linux

When we looked for information about PICO-PI-IMX8M single board computer, we noticed another Raspberry Pi shaped board powered by NXP i.MX 8M processor: MaaXBoard by Embest, an AVNET company. The board comes with up to 4 GB DDR4 RAM, a MicroSD card slot or eMMC flash for storage, Gigabit Ethernet, WiFi & Bluetooth, HDMI 2.0, USB 3.0 port, MIPI CSI & DSI ports, and of course a the 40-pin “Raspberry Pi” expansion header. MaaxBoard specifications: SoC – NXP i.MX 8MQ quad-core Arm Cortex-A53 processor, Cortex-M4F real-time core, and Vivante GPU with OpenGL/ES 3.1, OpenGL 3.0, Vulkan, OpenCL 1.2 System Memory – 2GB DDR4 SDRAM (up to 4GB) Storage – MicroSD card slot or optional eMMC flash up to 64GB Video Output – HDMI 2.0 up to 4K @ 60 Hz, MIPI DSI display connector Video Playback – 4Kp60 with High Dynamic Range (H.265, VP9), 4Kp30 (H.264), 1080p60 (MPEG2, MPEG4p2, VC1, […]

Khadas VIM4 SBC