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Password Code Combination Keypad Button Matrix Soldering Kit DIY

Password Code Combination Keypad Button Matrix Soldering Kit DIY! This button matrix has a preset 4 digit passcode. If you input the correct code, the red indicator will light up. Soldering kit for practicing soldering techniques.

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Last Updated: 09/28/2022

Tinkersphere

TS3994

$5.99

Features:

  • Password Code Combination Keypad Button Matrix Soldering Kit DIY
  • This button matrix has a preset 4 digit passcode
  • If you input the correct code, the red indicator will light up
  • Soldering kit for practicing soldering techniques
  • Default Password: 1479
  • Unlocking Instructions:
    • press S1 (U1A Q=1)
    • press S4 (U1B Q=1)
    • press S7 (U2A Q=1)
    • press S9(U2B Q=1)
    • When the correct code 1479 is entered indicator lamp LED1 will be on meaning the input password is correct.
    • When the password is correct, U2B chip values are Q=0,U3 Y=1, making the first three triggers all clear; if you want to clear U2B and turn indicator lamp LED1 off press S8 to reset.
  • Contents:
    • 2x IC CD4013
    • 1x IC CD4011
    • 6x SMD Resistor 10K ohm
    • 1x Resistor 10K ohm
    • 1x Resistor 510 ohm
    • 1x Electrolytic Capacitor 10uF
    • 1x LED 5mm Red
    • 10x Tactile Button 6*6mm
    • 1x PCB

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