Raspberry Pi image System: Raspian Strech light https://www.raspberrypi.org/downloads/raspbian/ Because of the small base image it will fit on a 2 GB SD card but I recommend to use at least a 4 GB one. shasum 2018-06-27-raspbian-strech-light-measureit-121-2gb.img 9f01aca0e10c527472952a5d2e1245fa10d4ff07 2018-06-27-raspbian-strech-light-measureit-121-2gb.img shasum 2018-06-27-raspbian-strech-light-measureit-121-2gb.img.zip d66b6697c31bc65c47a50008a344acd0b56a5ea5 2018-06-27-raspbian-strech-light-measureit-121-2gb.img.zip Download 2018-06-27-raspbian-strech-light-measureit-121-2gb.img.zip 553,1 MB https://mega.nz/#!XMcEiIpQ!GNo98vRaJdKRFI-SFAeuZTBO3Jf9ZTae5fq1Az6pv0A Image description https://gitlab.com/lalelunet/measureit/wikis/Raspberry-Pi