A blocking oscillator is one of the simplest form of oscillators which is able to produce self sustaining oscillations through the use of just a few passive and a single […]
Search Results for: code lock
Bluetooth Car Ignition Lock Circuit – Keyless Car Protection
This circuit will allow the user to lock his car ignition using his phone Bluetooth, meaning the ignition can be locked/unlocked only through a specific code from the user’s cellphone […]
MQ-135 Air Quality Sensor Circuit – Working and Interfacing with Program Code
In this article we are going to learn how to interface air quality sensor MQ-135 with Arduino. We will see overview of the sensor and construct a project which detects […]
Password Security Lock Circuit Using 4×4 Keypad and Arduino
In this post we are going to construct a password security lock circuit, which can be accessed by a 6-digit password. To be more precise it is alpha numeric password. […]
Arduino Digital Clock Using RTC Module
In this post we are going to construct a digital clock using RTC or Real Time Clock module. We will understand what “RTC” module is, how to interface with Arduino […]
Make this 7 Segment Digital Clock with Beep Alert Circuit
In this post we are going to construct a digital clock using 7 segment LED display with Arduino controlled design. How the Circuits Works The proposed 7 segment clock circuit […]