4-bit Simple Password Lock DIY Kit Electronic Password Lock Welding Spare Parts Self Assembly and Soldering Electronic Component

Condition : New
Type : Voltage Regulator

4-bit Simple Password Lock DIY Kit Electronic Password Lock Welding Spare Parts

Feature:
Item name:4-bit Simple Password Lock DIY Kit

Board size: 81*65mm

Power supply: AC 9V

Product description:

Using four XOR gates for 4-bit input password discrimination, the high and low levels generated by four logic level switches are used as password inputs. Each input password is compared with the preset password for that bit, and the same output is 0, while the different output is 1. Then, it is sent to the OR gate. When all four bits are 0, the OR gate outputs 0, and this signal is sent to the low level driven LED to light up the LED and achieve password unlocking function. Connect P3 to P2 sequentially using a DuPont cable. When the switch is turned to 1, the LED lights up, indicating a high input level; When the switch is turned to 0, the LED turns off, indicating a low input level.

Note: It's diy kits. Need to solder by yourself.

Due to the light and screen setting difference, the item's color may be slightly different from the pictures.

Please allow slight dimension difference due to different manual measurement.

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