https://docs.arduino.cc/hardware/uno-rev3/
https://docs.arduino.cc/hardware/uno-rev3-smd/
https://www.kjell.com/no/produkter/elektro-og-verktoy/elektronikk/utviklerkit/arduino/utviklingskort/arduino-uno-rev.-3-smd-utviklingskort-p87056
https://www.skolehuset.no/products/arduino-uno-r3?variant=41474304966865¤cy=NOK&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gad_source=1&gclid=CjwKCAiAk9itBhASEiwA1my_6w-sinFV1i2IA7L_T-M9fXew09pmccUR8bBC0o-XtLbeEtsTpBFLKRoCtacQAvD_BwE