Build system that get input from HC-35 Matrix Button to match with student ID in system.
If input ID match with ID in system, LD2 on Nucleo F411RE will turn on.
HC-35 Matrix Button - image by amazon
- 0-9 numeric pad: user number input
- CC: Clear Content, Clear all input
- BKSP: Backspace, clear most right-hand position of the sequence.
- OK: Submit ID to match in system.
ID will have 11 Digits.
- System will allowed user to input number as most at 11 digit, input that user key after it full it will not accepted.
- When user push CC button after LD2 is turned on, System will automatically turn off LD2.