Our paper about the performance available using modern Single Board Computer (SBC) clusters has now been published the the Journal of Future Generation Computer Systems. Philip J. Basford, Steven J. Johnston, Colin S. Perkins, Tony Garnock-Jones, Fung Po Tso, Dimitrios Pezaros, Robert Mullins, Eiko Yoneki, Jeremy Singer, and Simon J. Cox, (2019) Performance analysis of
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Category: Raspberry Pi
Raspberry Pi LoRaWAN gateway PCB
As discussed in a previous blog post the iC880a is a LoRaWAN concentrator that can be used to create a gateway. The iC880a only provides the LoRaWAN hardware, it does not provide any processing capabilities, for this we use a Raspberry Pi. However, the Raspberry Pi and the iC880a have different pin layouts for their
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EMF camp 2018 Air Quality LoRaWAN workshop
At EMF camp 2018 we ran three workshops in order to improve people’s understanding of air quality. The workshop details can be found at https://www.emfcamp.org/line-up/2018/180-air-quality-sensor-devices-build-program-and-test. Here are the details needed to recreate the workshop. The workshop was designed to be suitable for anyone with no prior experience using a Raspberry Pi, however, the setup steps
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EMF workshop notes coming soon
The instructions for the workshop we ran at EMF Camp 2018 will be posted here soon.
Building HPL and ATLAS for the Raspberry Pi
Following on from work by Simon Cox and colleagues building the first Raspberry Pi Cluster we are building a new cluster and want to compare the performance of the two. To do this we are once again going to run Linpack. Versions of MPI and HPL have moved on since then. When Wee Archie Blue
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Using the Adafruit Ultimate GPS with the iC880A
In an earlier post our experience of adding a uBlox GPS receiver directly onto the PCB of the iC880A, and commented that whilst it was doable it required a tricky soldering, even with the most challenging component needing to be omitted, so we looked into ways of adding a GPS module without needed surface mount
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Adding a GPS Receiver to the iC880A LoRaWAN concentrator
Hardware setup The iC880A is a popular PCB for creating a multichannel LoRaWAN base station. It is supplied with pads for the addition of a u-blox LEA-6T. As well as adding the GPS receiver module several other components have to be added including a power supply, USB connector and associated passives / TVS protection diodes.
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Bundling Singularity within a Yocto image for the Raspberry Pi
This guide serves as a basic introduction to using the Yocto project for building a custom Linux image for the Raspberry Pi. The Singularity containerisation engine is bundled within this image as an example, and because it is a nifty piece of software. In writing this, I assume the reader has some working knowledge of
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Interfacing a K30 CO2 sensor with a Raspberry Pi for Remote Air Quality Sensing
Climate change, and the declining air quality in major urban areas is becoming an increasingly prevalent and critical issue, with hundreds of thousands of premature deaths due to air pollution in Europe alone (http://www.bbc.co.uk/news/world-europe-38078488). One approach to resolving this problem is a data-driven “Smart City”. So-called Smart Cities employ a huge network of sensors all
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