Password Code Combination Keypad Button Matrix Soldering Kit DIY
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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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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
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1x PCB
TS3994
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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.