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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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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