An LED electronic safe box has an electronic lock installed in the door, which can be locked and unlocked by entering a specific code into the keypad. The LED displays the status of the electronic safe box and the contents input from the keypad.
This reference design features a small pin-count, low power RL78/G1N microcontroller that can directly drive high-brightness LEDs of 8 segments and 6 digits via large current output terminals. With a single microcontroller, you can realize 7-segment 6-digit LED display control, keypad control, motor control (electronic lock control), and buzzer control.
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- Demo board includes the RL78/G1N
- 7-segment 6-digit LED display
- Numbers: content input into the keypad
- OPEΠEd (Opened): Electronic lock is unlocked
- CLOSEd (Closed): Electronic lock is locked
- HOLd15 etc: Password setting time
- 10-key input
- Electronic lock/unlock
- Powered by 3 AA batteries (1.5V x 3)
- Low power consumption operation 20uA(TYP.)@STOP mode