Introduction A 5V SPDT (Single Pole Double Throw) relay-controlled DC solenoid door lock is an electronic device that allows you to control the locking and unlocking of a door remotely. This system uses an Arduino … Read more
lock
In this tutorial, we are going to make a “10 Key Code Lock Switch Circuit”. This code lock switch is an electronic circuit, to replace a conventional key switch. We do not need to carry … Read more
10 Key Code Lock Switch Circuit
We all know, Digital Code Locks are mainstream in Electronics, where you have to enter a specific ‘Code’ to open the Lock. This sort of lock needs a Microcontroller to contrast the entered code and … Read more
Electronic Code Lock Circuit
Here is an interesting project of a smart and efficient electronic combination code lock circuit. The circuit will provide a code lock device that is using a few 555 timer ICs and CD4017 decade counter … Read more