The SACAQM has currently been working on the generation of pulse-width-modulated signals by the Nordic Semiconductor nRF9160 SiP. This signal, as seen in orange in the figure below, exhibits specific properties as required by one of the air quality sensors that is being deployed.
"The detailed documentation provided by Nordic Semiconductor for their nRF9160 SiP has allowed for the rapid development of the IoT sensor nodes of the AI_r system" - says Ryan Mckenzie who is the IoT project manager.
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