In this chapter we make use of all of the ideas introduced in earlier chapters to create a raw interface with the low cost DHT11/22 temperature and humidity sensor. It is an exercise in interfacing ...

Imagine that you’re starting a project where you need to measure temperature and humidity. That sounds easy in the abstract, but choosing a real device out of many involves digging into seemingly ...

to the config.txt file then when you reboot, the driver will be loaded and configured to use GPIO4. Change the gpiopin parameter to whichever GPIO line you are using. After a reboot the driver will be ...