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Single-Board Computers

14 Posts authored by: shabaz Top Member
Introduction The PocketBeagle single board computer (SBC) is really tiny. Apart from the size, there are lots of similarities with the larger BeagleBone Black, and there are also some differences.   In terms of performance, it is identical. It has the same amount of memory, and runs using the same processor and the same Linux image too!   To get the size down, it is of course missing many connectors but a lot of functionality within the main chip is brought out onto the two 36-way ...
Introduction History How is it used for GPIO? Isn’t there some Stinkyness with Device Tree or Overlays? How to Install the Library? How Fast is it? How is SPI used? Adding Another SPI Interface (SPI 1) How is I2C used? Which pins can I control with the GPIO, I2C and SPI functions? What Doesn’t Work? I Need More Pins PocketBeagle Specifics SPI with the PocketBeagle I2C with the PocketBeagle Summary   Introduction Thi ...
Introduction What Do You Need? What Software is Needed? Creating the Micro SD card First Boot Powering Off and On Configuring Linux Creating a Superuser Password Changing the default debian user password Creating a New User Increasing the micro SD Partition Size Connecting to a Wireless Network Connecting to Ethernet Problems? Use the Serial Console Summary   Introduction This blog post describes how to get the BeagleBone Black (or ...
Introduction The NVIDIA Jetson Nano is a compact board approximately 70x45mm in size, with a large heatsink : ) It's got a very powerful microchip, the NVIDIA Tegra X1, which contains four ARM applications processor cores, as well as 128 graphics processing units (GPU). GPUs are used for more than graphics purposes, because it turns out that some of the interesting applications for computers today, to do with neural networks, which can be used to recognise patterns with ever increasing accuracy, ...
Introduction I recently needed a small form-factor computer and I was lucky enough to get given an Intel NUC (model NUC7i3DNKE) as part of my work. I thought I’d take some photos of it as I explored it.   My primary use-case will be to use it for demos. It is very small so it can be taken with me when I travel. However, there are other uses planned for it too.   In the drive for a silent environment to work in, I hardly ever turn on the desktop PC. The laptop works fine for m ...
Introduction The Leap Motion Controller is something that can be used as an input device for a computer (desktop/laptop or a single board computer). It can be placed on the desk, or if desired can be strapped onto a virtual reality (VR) headset if you have one. In brief, when it sees your hand or hands, it can analyse them to figure out where your fingers, palms and so on, are in three dimensional space. It can also figure out certain movements such as swipes. You could use it for controlling st ...
I finally purchased a couple of PocketBeagles, I knew they would be small, but it is still amazing to see it close-up! It is very thin too, it measured 4.60mm (the highest point is the surface of the Octavo module). For connections, I purchased 2x9way total 18-way header pins because these are cheaper than 2x18way. A total of four of these are needed to fully connect to the PocketBeagle, although that might not be necessary for all projects. Note that the header pins are connected to the u ...
Note: This blog post partly contains some new content, and partly some content from blog posts I’ve written in the past. It is a consolidation, to make information relevant to FRDM boards and mbed available at one convenient location.   Introduction FRDM boards are a range of compact (slightly larger than credit-card sized) boards with a microcontroller. They are great for prototyping projects. The FRDM boards and the mbed platform (described later) are designed to make users concent ...
Introduction This blog post examines part of the story of the evolution of music synthesis during a certain key period toward the end of the 20th Century. What is music or sound synthesis? It is the creation of music and sounds without the need to use actual acoustic instruments such as percussion, wind and brass instruments. The 1960s and early- to mid-1970s were a fantastic period for music worldwide. Elvis of course, Johnny Cash, John Denver, The Beatles, Elton John, the incredible Rolling St ...
Introduction This blog post covers a quick project to build-you-own USB Serial Adapter. It can be used for connecting up computers to other computers or microcontrollers. Some scenarios are shown in the diagram, connecting up the Raspberry Pi or Arduino or BeagleBone Black to a laptop’s serial port.   This diagram below (click to zoom) can be used as a general purpose reference for these boards, of the correct pins to wire up to any USB Serial Adapter, and signal directions are marke ...
Introduction Magnifiers and other visual inspection tools are essential with working with small electronics. This blog post does a quick round-up of several low-cost ways to achieve this for hobbyists, and shows how to assemble a digital video microscope using the Gizmo 2 single board computer (SBC).  See video below!:   The topic of PCB inspection magnifiers and cameras has come up many times on Element 14 forums. This blog post shows my experiences so far.   Motivation When w ...
I use the BeagleBone Black for many projects, often they are bare but my latest BBB is housed in a very nice case from TEM Products. This case is ideal if a project is going to be visible to an audience. The case is quite different from others because it exposes the header connections on the BBB. It is also very accurately machined to act as a large heat sink. Here it is with the BBB inside (the sticker is not included): The enclosure is a very snug fit, I don't think a smaller case ...
shabaz

Gizmo 2 – The New Batch

Posted by shabaz Top Member Dec 27, 2014
Introduction The Gizmo 2 is an ultra-small computer that fits in the palm of the hand and is the successor to the earlier Gizmo from GizmoSphere. Unlike a lot of single board computers, this one contains a 64-bit CPU (x86-64 compatible - actually an AMD64 device) and an open source, standards compliant BIOS. There are some advantages to this – you don’t really need to build your own Linux image because there are plenty of distributions that can be instantly downloaded and used. Some ...
Introduction There is a remote power control solution for home use by a company called Energenie, that provides radio-controlled mains socket adapters for UK use. These are intended for use with small radio-controlled handset, like a TV remote; I wanted the ability to use them with any microcontroller board. This is a short post about my findings. The aim was to control these sockets: with this:   What about Europe, US, Asia, etc? Unfortunately I don’t believe they have a product ...

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