Where can I find some information of the modules (a.o. the RTC Module) from the Arduino Upgrade Learning Kit? The zip file (cf [http://www.elektor.com/rfid-starter-kit-for-arduino-uno], Attachments / Downloads: 150396-11.zip, Size: 0.86 MB) contains only information about the MFRC522 contactless reader IC). I have asked Elektor but they haven't answered my question. They say I have to use the search function (http://www.elektormagazine.nl) but it can't find the RTC Module nor any other modules.
Any suggestions?
TIA
S Claes