David Watts


Raspberry Pi 2: First impressions and comparison with the B+

A quick visual comparison between the Raspberry Pi 2, the B+ and the original Pi. A quick browser test showed that the Pi 2 is, as expected, a lot faster than the B+. I got the Raspberry Pi 2 from Element 14 – http://www.element14.com/community/community/raspberry-pi/raspberrypi2 Python Multiprocessing – https://docs.python.org/2/library/multiprocessing.html A multiprocessing tutorial – http://pymotw.com/2/multiprocessing/basics.html


Bubble Display – HP QDSP 6064

I picked up these tiny bubble seven segment displays from Cool Components – https://www.coolcomponents.co.uk/opto/led-displays/bubble-display-7-segment-4-digit.html They are cute little displays ideally suited to counters, watched or displaying your analog values. They can be really power efficient too, with a 2v drop on the segments I can calculate the resistance needed for around 0.5ma. 3v / 0.0005…