магазины компонентов

http://www.tinydeal.com/ru/raspberry-project-board-p-114724.html

http://www.miniinthebox.com/ru/16-x-2-lcd-keypad-shield-for-arduino-uno-mega-duemilanove_p340888.html

http://www.banggood.com/Wholesale-Arduino-SCM-And-3D-Printer-Acc-c-2153.html?utm_source=google&utm_medium=cpc&utm_campaign=Celc-ad-simi2-P2&utm_content=nydia&utm_design=3&gclid=CPnozu7Pq78CFSPjcgod_ZUA4A