How to write the programming for car parking payment with tag in with RFID card to record duration of time and tag out to pay the fees?
What is your programming experience?
Write a FULL description of what your want to do. Break it into small steps.
Start with a small section of code such as read RFID and turn on a LED.
Also work out how to use a RTC to time the stay. Use switches initially then combine the two.
Add small bits at a time making sure you save working code under a different name before you add new code.
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