lockbox
#lockbox
#security
#access control
#electronic lock
#keypad
#solenoid
#authentication
#safety
#enclosure
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Security Monitor
This circuit can be utilized in a garden setting to detect unusual sounds or wildlife noises. It can also monitor sounds around a car parked in a remote location. The cable used for the setup can either be visible or...
Midnight Security Light Circuit Schematic
Most thefts occur after midnight when individuals enter the second phase of sleep known as 'paradoxical sleep.' Here is an energy-saving circuit that causes...
An energy-saving circuit designed for security applications can be particularly beneficial during the late-night hours when individuals...
Electronic Lockers
This circuit is an electronic locker that operates using a combination of switches, functioning based on a specific code. The switch matrix is located on the locker door and consists of 16 switches arranged in a 4x4 grid, totaling eight...
Keypad-Operated Switch No.2
Speaker relay delay controlling circuit for audio amplifier
The speaker relay delay controlling circuit is designed to manage the connection between an audio amplifier and the connected speakers, ensuring that the speakers are activated only after a predetermined delay. This delay...
A Simple Keypad Using Lin With The Mc68hc908qt/qy Mcu
Introduction The design of off-line constant voltage, constant current (CVCC) power supplies using the NCP1014 for devices such as cell phones, hand tools, and similar battery chargers can present various challenges when low cost and circuit simplicity are required alongside...
Do not drink and drive I wish you a safe journey home Language Integrated Circuits
Do not drink and drive. Wishing you a safe journey home. Language Integrated Circuits.
Language Integrated Circuits (LICs) are specialized electronic components designed to facilitate the processing of language-based data within various applications. These circuits integrate multiple functions, such as signal...
Keypad Operated Switch No.2 - testing your circuit
The prototype of Keypad Switch No. 2 was constructed using only the stripboard layout as a reference. If the layout has been accurately reproduced, a functional circuit will result. Once the layout is confirmed to be correct and a thorough...
Electronic Lock with 4013
This circuit is very basic to build. To open a the lock which is connected to the K1 Load you must press each momentary switch in the correct sequence. The sequence used in this circuit is S1, S2, S3, S4....
MultiKey - One Wire Keypad
This project can be utilized for various purposes, with one of the most common applications being the interfacing of a keypad for electronic projects. While several pre-made keypads are available on the market, they typically operate with matrix connections, requiring...