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Harry Fairhead has worked with microprocessors and electronics for many years and is an enthusiastic proponent of the IoT. This is followed by a digression into the Device Tree and overlays, using the DHT22 temperature and humidity sensor as a practical example, before tackling PWM both via a driver and directly using Gpio5.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.