RFID using NodeMCU and mySQL
I am having a slight problem doing this project where i cant save the data for the person who scanned their RFID tag for checking in and checking out
Solution
Make sure that your RFID reader is properly connected to the NodeMCU and that it can successfully read RFID tags. Verify that your NodeMCU can successfully connect to your MySQL database. Verify your NodeMCU code to ensure that the RFID data is correctly inserted into the MySQL database verify that you are using the correct SQL queries 
