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sorry for the delay, I just got the emails saying there was quesitons. I have updated the instructable, hopefully it makes more senseJust to explain this again. Each RFID tag gets its own file. so rfid tag 6254429 will need a file created called 6254429 inside the file is the TagID,EmailAddress,Amount, admin (1 or 0)Any tag can be an admin tag, but if it's flagged admin, it cannot buy drinks just change settings and add money to other rfid tags.so in the file6254429,firstname.lastname@example.org,25.00,0 is a rfid tag that has $25 on it.6254429,email@example.com,25.00,1is a rfid tag that has admin accesstry using notepad ++ and use the open with.
Yes, just replace the button press routine, should be really easy to do
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Remote Controlled Arduino Scoreboard using LED Strips
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DIY OFF GRID SOLAR SYSTEM