This electronic lock is designed to work with a keyboard with 10 switches being controlled (operated / off) using a four digit code.
Circuit Diagram:
Various simple electronics projects for beginners
Various simple electronics projects circuits diagrams for hobbyist and beginners . Simple circuits, mini projects with diagrams and description from many electronics categories.
XR2240 timer circuit project
The timing circuit is built using XR2240 integrated circuit manufactured by EXAR.
Circuit Diagram:
Pulse relay dirver
Using some electronic components can be built a simple relay driver to drive a relay. This circuit change state of a standard relay each time a pulse is applied (or press a button).
Circuit Diagram:
| Circuit Diagram | ||
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| Electronic key lock |
This circuit diagram it is a very simple electronic key lock that can be used for alarm systems... |
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| Function generator circuit |
Probably in some electronic circuits you need a function generator circuit that can produce a... |
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| Panel voltmeter ammeter electronic project using CMOS |
A panel voltmeter ammeter very cheap, can be designed using this electronic scheme that uses... |
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| Light dimmer circuit |
This electronic light dimmer circuit can be used to adjust the brightness of mains lights and... |
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| SIM card reader circuit schematic |
Using this schematic circuit we can make a very simple SIM... |
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| Electronic thermostat schematic circuit |
A very simple electronic thermostat circuit can be constructed using... |
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| Simple electronic lock circuit diagram project |
Using some electronic component, a numeric keypad, a CMOS integrated circuit, three transistors... |
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| USB to Serial RS232 adapter schematic circuit |
This USB to Serial RS232 adapter is very useful in many situations we need to connect the a... |
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| Electronic door buzzer circuit schematic |
This electronic door buzzer circuit schematic has a very simple... |
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| Pulse generator using 4066 IC |
Using this electronic circuit diagram can be made a very simple pulse generator, using a 4066... |
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| 12V DC motor speed controller |
A very simple encoder circuit for a dc motor can be constructed using... |
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| Solid state battery indicator |
The most simple solid state battery indicator electronic project can be designed using few... |
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