toothache

IC card, meal card, mobile phone NFC access control

Overview

1. It is a simple single-chip servo control. There will be differences in different servo models (mine is sg90 ).

2. The stc8 used is small in size and rich in functions.

3. I initially bought a 0.96-inch OLED, but gave up because of the power consumption.

4. The hardware sleep circuit can set the working time according to the capacitance value (I did it for about 10S).

5. There is a DC 5.5 interface, powered by a 7.4V rechargeable battery. Short-circuit the input and output of the 7805 to use the power bank to supply power (solve the problem of the power bank sleeping).

6. Enter the IC card with one click and open the door indoors with one click.

7. The corresponding module of the NFC module interface is RC-522

8. Subsequent improvements

If you have any questions, please leave a message. If you don’t like it, don’t comment. Please give me some advice.

Design Files

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Update:2025-05-08 12:47:34

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