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Raspberry-Pi-logoWell – this is it!  The last lab in Intertech’s free give away of the materials from our Complete Raspberry Pi Training class.  I hope you enjoy the training provided by the materials and you will consider contacting Intertech for future application developer training.

In this last lab, you connect the Pi to a temperature/humidity sensor (via a breadboard).  Specifically, you get readings from an inexpensive DHT22 sensor (as shown below).

dht22

Unfortunately, Java is a little bit too slow to create and measure the right digital pulses used to communicate with the sensor.  So you use a program written in the C programming language to communicate with the sensor.

Find Lab 10 here:  http://www.intertech.com/downloads/CompleteRaspberryPi/CRPi-ch10-TempSensor.docx.

Specifically in this lab, you:

  • Connect a temperature/humidity sensor to the breadboard.
  • Learn how small voltage pulses to represent digital communications are used to communicate with the sensor.
  • Explore a program to get input from the temperature/humidity sensor connected by GPIO to the Pi.
  • Execute the C program to read the temperature and humidity from the sensor.

Used with the photo sensor application learned in Lab 9, you have a small, inexpensive Raspberry Pi home weather station.

IMG_4390

If you missed any of the previous nine posts, you can get the entire set of labs from the links below.  I believe the Raspberry Pi is a fantastic and inexpensive way to experiment in computing.  I hope you enjoy the labs as much as I and Intertech have enjoyed bringing them too you.

Again, if you haven’t been following along and need to see the other labs, you can find them at the links below.

 

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