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Raspberry Pi Roundup - 20th April 2016
CamJam EduKit 3 - Further adventures
Cat Lamin previously reviewed her initial use of CamJam EduKit 3 with her friend Louise. Well, now the ladies have had another hack session and progressed to using the sensors included in the kit. She recounts their escapades here.
PiCamera
Ben Nuttall has published a new ‘Learn’ resource on the Raspberry Pi website. This new resource takes you through using the Picamera Python library to do the following:
- How to connect the camera module to the Raspberry Pi
- How to use Python to control the camera module
- How to use
start_preview()andstop_preview()to control the camera preview - How to take still pictures with
capture() - How to record video with
start_recording()andstop_recording() - How to play back video with
omxplayer - How to alter the brightness and contrast
- How to apply image effects and exposure modes
This is a great resource suitable for home use and for event workshops.
DHT temperature sensor
The DHT11 temperature and humidity sensor is an inexpensive sensor. It has a +/- 2 degree variance, so it’s not suitable for high-precision use-cases (for that you need the DHT22). Over at Circuit Basics, they’ve written a tutorialwhich will get you started with the sensor. They’ve included code for both C and Python (using an Adafruit library) and also highlighted how to display it to a small LCD screen (as pictured). Read how to do it here.
Upcoming event - Potton Pi and Pints
The Cambridge Raspberry Jam organisers are holding a Raspberry Jam in a local Bedfordshire pub! Saturday 14th May is the date and it all kicks off around 1pm. A variety of show-and-tell projects will be on display and it's a great chance to socialise and chill out. This is a family-friendly event for newcomers and old-hands alike. Register on Eventbrite here or just come along!
