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Multi-purpose simple electronic password lock kit electronic Key code lock DIY kit Hobbyist electronics lab Students

Multi-purpose simple electronic password lock kit electronic Key code lock DIY kit Hobbyist electronics lab Students

gtooza.com

Regular price $0.99 USD
Regular price $1.48 USD Sale price $0.99 USD
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Package : SMD
is_customized : Yes
Multi-purpose simple electronic password lock kit
Application : Computer
Condition : New
Type : Voltage Regulator
KY WIN ROBOT




working principle:
1. Press S1, U1A's q = 1, S4, U1B's q = 1, S7, u2a's q = 1, S9, U2B's q = 1. The lock on indicator LED1 lights up, indicating that the input password is correct.
At the same time, q = 0 of U2B and y = 1 of U3 make all the first three triggers clear. If you want U2B to clear, the indicator LED1 goes out (the lock is closed), you can press S8
2. According to the above analysis, the passwords are 1479 in sequence. During the password input process, if the sequence is not followed or other trigger reset end (r end) keys are pressed, the password is incorrect.








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