- http://wiki.seeed.cc/Sidekick_Basic_Kit_for_Arduino_V2/
- http://razzpisampler.oreilly.com/ch03.html#SEC7.1
- Rasp Pi 3 GPIO header: https://www.element14.com/community/servlet/JiveServlet/previewBody/73950-102-11-339300/pi3_gpio.png
- Servo motor article with micro:bit https://microbit-playground.co.uk/components/servo
- Servo motor w raspberry pi http://razzpisampler.oreilly.com/ch05.html
- Another article on the same: http://rpi.science.uoit.ca/lab/servo/