door opener

Every time I go out and lock my door using the traditional lock, I feel so outdated. I wanted to replace it with something interesting and modern, in terms of technology and uses. Something that can provide "better security" and "ease of use". So, I decided to build "An RFID Based Door Lock/Entry System." A system that can be used in every house or…

Thanks to technology, today's home security involve a wide range of software and hardware including web-based security services, biometrics, and personal devices with integrated security levels. One of the biggest advances of the digital-technical age has been the introduction of biometrics into security. Biometric door locks are now common with increased security…

In this age of IoT (Internet of Things) where everything can be controlled remotely using your smartphone, why to carry keys with you. There are lots of technologies to support wireless controlling of devices like RFID, Bluetooth, Wi-Fi, LoRa. We previously built some door alarms and door controlling circuit to open and close the door wirelessly:

The name of the circuit itself infers the application. This circuit triggers the alarm if the door of Fridge is left open for the long time. When the door of the refrigerator is left open, the temperature inside the cabin will increase. This rise in temperature will be sensed by thermostat and try to cool down the cabin. It will always try to maintain constant temperature of…

You must have seen automatic door openers in shopping malls and other commercial buildings. They open the door when someone comes near the entrance and close it after some time. A number of technologies are available to make such kinds of systems, like PIR sensors, Radar sensors,  Laser sensors, Infrared sensors, etc. In this Arduino based automatic door…