Name: Multi-purpose Coded Lock Suite DIY Simple Electronic Password Lock Kit Funny Electronic DIY Training Parts - en.fumwejc.id
Brand: Your Cee
SKU: 32994095388
Price: 1.57 USD
Availability: InStock

Multi-purpose Coded Lock Suite DIY Simple Electronic Password Lock Kit Funny Electronic DIY Training Parts

Category : Electronic Components & Supplies | Active Components

USD 1.57USD 1.65

Multi-purpose Coded Lock Suite DIY Simple Electronic Password Lock Kit Funny Electronic DIY Training Parts

Description
Specification

Description

The simple password lock is composed of D flip-flop CD4013, NAND gate CD4011 and surrounding resistors, key switches and other components. It requires the lock to be turned on when the correct button (password) is pressed in a certain order (LED1 is lit).

Working Principle:

1. Press S1, U1A's Q=1, press S4, U1B's Q=1, press S7, U2A's Q=1, press S9, U2B's Q=1, lock open indicator LED1 lights up, Indicates that the password is correct. At the same time, U2B's Q=0, U3's Y=1, so that the first three flip-flops are all cleared. If you want U2B to be cleared, the indicator LED1 is off (lock closed), you can press S8.

2. According to the above analysis, the password is 1479 in sequence. In the process of inputting the password, if the trigger clearing end (R end) button is not pressed in order, the password is incorrect.