Raspberry Pi Playlist: https://www.youtube.com/playlist?list=PLErU2HjQZ_ZPvIdR5BEqDgO7DsGAla_AZ
Raspberry Pi (Amazon Affiliate)
US: https://amzn.to/2LpyVob
UK: https://amzn.to/2Z2inKX
CA: https://amzn.to/2y5yAUA
ES: https://amzn.to/3fSDhSS
FR: https://amzn.to/2LpurxT
IT: https://amzn.to/2T2VZNu
DE: https://amzn.to/3buHRmQ
IN: https://amzn.to/2B3PGTN
echo "scale=1000; 4*a(1)" | bc -l