DS802 Oscilloscope Arduino
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SainSmart DS802 Review – A Dual Channel Virtual PC Oscilloscope

Hey Karl here. Today we’re going to look at the SainSmart DS802 Dual-channel oscilloscope. I have always wanted to have an oscilloscope and add it to my tools. When SainSmart asked to review the DS802, I was pretty excited. I can get my nerd on and troubleshoot all kinds of things. A couple weeks later it arrives and my anxiety kicks in. How the heck do I review an oscilloscope. I used an oscilloscope in high school in a class called principles of technology. But we never really went into much depth and only looked at the signals generated by a signal generator. I understand the basics. This is written from a perspective of a complete noob. SainSmart DS802 Specs Pulled directly from Sainsmarts website: Channels: 2 Analog channels Interface: USB 2.0 Output: 1k HZ amplitude 1.5V, 50% duty cycle square wave signal Maximum sampling rate: 80 MSps per channel […]

AMD A6-9220C Processor
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AMD A6-9220C & A4-9120C Low Power Processors Target Chromebooks

Intel will usually release new low power processors under 10W TDP every year, but that has not been the case for AMD, with the company releasing several 12-15W processors in the recent past like Ryzen Embedded  V1000 series and the Ryzen 7 2700U processor I’m currently using my Ubuntu laptop. However, AMD has now announced two new A-series processors with a 6W TDP, namely A4-9120C and A6-9220C dual-core processors that specifically target Chromebooks. AMD A4-9120C key features: Processor – 2x CPU cores, 2x CPU threads @ 1.6 GHz / 2.4 GHz  (Boost) Cache – 160KB L1 cache, 1MB L2 cache GPU – Radeon R4 graphics with 3x GPU Cores up to 600 MHz, support for H.26x, VP9 decode Memory – Single channel @ 1866 MHz Video Output – HDMI and DisplayPort Process – 28nm CMOS Package – FT4 TDP – 6 watts AMD A6-9220C key features: Processor – 2x CPU […]

ArmSoM RK3588 AIModule7 NVIDIA Jetson Nano-compatible SOM
Sony Spresence Kit Assembled
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Sony Spresense Board Review with NuttX based Spresense SDK

Sony Spresense Arduino compatible board with audio and global navigation satellite systems (GNSS) support and its extension board launched in Japan this summer. The company has now expanded markets, and is offering the boards in the United States and Europe as well. They also tasked an agency to send samples to various reviewers, and I got selected to receive one as well. I’ll start the review by checking out the hardware, shortly discuss software development options, and report my experience with Spresense SDK. Sony Spresense Unboxing I received two packages… … one the main board, and the other for the extension board. The main board package only comes with CXD5602PWBMAIN1 board and an information sheet. The top of the board includes a reset button, four user LEDs, a power LED, a boot recovery button, the camera interface, Sony CXD5247 power management and audio analog interface chip (Black on the photo below, […]

cnx software year 2018 review
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Year 2018 in Review, Top 10 Posts, and Some Stats

That’s it, we’ve already reached the last day of 2018, and it’s time to have a look back at what happened during the past year. On the mini PC front, Gemini Lake based mini PCs took over from Apollo Lake with some performance improvements, but I expected the price point to be a bit lower than it is today.  Apart from further developments with regards to mobile processors, it feels 2018 was an off-year for processors, such as the ones found in TV boxes and development boards, with mostly more of the same. Allwinner and Rockchip did not release any really interesting processor, and Amlogic only launched S905X2 and S905Y2 which are mostly evolutions of their previous generation with an OpenGL 3.x capable GPU and USB 3.0. Rockchip RK3399 stood out this year, as despite being launched in 2016, it suddenly became popular again with many RK3399 SBCs coming to […]

Khadas Edge Ubuntu 18.04
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Khadas Captain / Edge SBC Review – Part 2: Ubuntu 18.04

I received Khadas Edge Developer Package with Khadas Edge RK3399 module, Khadas Captain carrier board, and several accessories a few weeks ago, and after checking the hardware in the first part of the review, I’ve now taken the time to review software support, specially Ubuntu 18.04 on the board. Khadas Edge / Captain Firmware There are currently four main choices of firmware for Khadas Edge / Khadas Captain: Ubuntu 18.04 OS with LXDE desktop environment @ https://dl.khadas.com/Firmware/Edge/Ubuntu/ Android ROM @ https://dl.khadas.com/Firmware/Edge/Android/ with Android Nougat being a proper release, Android Oreo (available now) a temporary version that will not be supported, and Android P that will be released and supported by Rockchip later on in 2019 Armbian RK3399 for Khadas Edge looks to be work-in-progress right now LibreELEC for playing videos on the platform I decided to focus on Ubuntu 18.04 for this review, and Karl who has his own sample […]

Intel Foveros Hybrid Processor-Development-Board
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Intel Unveils Foveros “big.SMALL” Hybrid x86 Processor, Roadmap for Atom Processors

Once upon a time Intel manufactured mobile processors for smartphones and tablets, but they eventually gave up as their solutions failed to gain traction. However, it looks like they may be back, as one customers required them to developer a chip with higher performance than Atom processors combined with a 2 mW standby power state. The chip was developed using “Foveros” 3D stacking technology was showcased at Intel’s Architecture Day 2018, but before going into further details, let’s have a look at Atom and Core processors roadmap to 2023 unveiled at the event. First, Intel will have developed three new Atom micro-architectures going into 2023. As we’ve seen previously, Tremont will succeed Goldmont Plus microarchitecture found in Gemini Lake and Denverton processors, and improve single-threaded performance, network server performance, and battery life starting in 2019. Around 2021, Gracemont will be launched with again higher single-thread performance and frequency, as well […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
Bonsai Machine Learning
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Bonsai Algorithm Enables Machine Learning on Arduino with a 2KB RAM Footprint

Machine learning used to be executed in the cloud, then the inference part  moved to the edge, and we’ve even seen micro-controllers able to do image recognition with GAP8 RISC-V micro-controller. But I’ve recently come across a white paper entitled “Resource-efficient Machine Learning in 2 KB RAM for the Internet of Things” that shows how it’s possible to perform such tasks with very little resources. Here’s the abstract: This paper develops a novel tree-based algorithm, called Bonsai, for efficient prediction on IoT devices – such as those based on the Arduino Uno board having an 8 bit ATmega328P microcontroller operating at 16 MHz with no native floating point support, 2 KB RAM and 32 KB read-only flash. Bonsai maintains prediction accuracy while minimizing model size and prediction costs by: (a) developing a tree model which learns a single, shallow, sparse tree with powerful nodes; (b) sparsely projecting all data into […]

Linux 4.19 Changelog
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Linux 4.19 Release – Main Changes, Arm and MIPS Architectures

With Linus Torvalds taking a leave from the Linux kernel project, Greg Kroah-Hartman was the one to release Linux 4.19 last Sunday: Hi everyone! It’s been a long strange journey for this kernel release… While it was not the largest kernel release every by number of commits, it was larger than the last 3 releases, which is a non-trivial thing to do. After the original -rc1 bumps, things settled down on the code side and it looks like stuff came nicely together to make a solid kernel for everyone to use for a while. And given that this is going to be one of the “Long Term” kernels I end up maintaining for a few years, that’s good news for everyone. A small trickle of good bugfixes came in this week, showing that waiting an extra week was a wise choice. However odds are that linux-next is just bursting so […]

Boardcon CM3588 Rockchip RK3588 System-on-Module designed for AI and IoT applications