Schlagwort: Smart Lock

  • MKR Keylock is an open-source IoT keypad for your front door

    MKR Keylock is an open-source IoT keypad for your front door

    Reading Time: 2 minutes

    The age-old combination of physical locks and keys, although reliable, also comes with a few drawbacks, such as when you lose the key or you want to share access with someone else remotely. Davide Gomba has recognized this and built the MKR Keylock project as a way to address some of these shortcomings.

    Starting with an existing electronic lock module, Gomba installed it in his door before identifying the circuit responsible for triggering it to open. Once found, he connected the line to a relay that, when triggered by a GPIO signal, will unlock the bolt. An Arduino MKR WiFi 1010 was then attached to a 4×4 keypad, a small buzzer for signaling an incorrect code, and another relay that runs to the doorbell for remote ringing. Thanks to the MKR board’s Wi-Fi connectivity, the firmware configures an MQTT client that listens to a few topics: “/code” to set the keypad code, “/open” to override the locking mechanism, and “/alive/status” that reflects the real-time status of the lock.

    Over on the web side, Gomba made a new Home Assistant integration that operates on the same topics as a controller. From a webpage, users can then toggle the lock or provide a new code for the lock to check against.

    Want to bring your own door into the IoT era? More information about this IoT lock can be found here on Hackster.io.

    The post MKR Keylock is an open-source IoT keypad for your front door appeared first on Arduino Blog.

    Website: LINK

  • GreatScott! childproofs his lab with a fingerprint-reading smart lock

    GreatScott! childproofs his lab with a fingerprint-reading smart lock

    Reading Time: 2 minutes

    As one of YouTube’s most prolific makers, GreatScott! has a lab full of equipment that we love. But a lot of that equipment represents a potential hazard to children and GreatScott! has a newborn at home. Before that baby becomes a curious and ambulatory toddler, he decided to restrict access to his lab with this DIY fingerprint-reading smart lock.

    Smart locks are actually trickier than they seem. Some require apps, others run on batteries that need frequent replacement or recharging, and none of them will work with every type of door. GreatScott! wanted something that didn’t require an internet connection, that was easy to open, and that used mains power so that he’d never have to worry about batteries. The only way to get that was by building it.

    This relies on a similar electronic catch, which uses an electromagnetic solenoid to pull a pin that disengages the lock. With it, the door can open when the catch has power. For safety reasons, a lock like this may not be suitable for all situations.

    GreatScott! had to modify his door and door frame to fit that catch. He then designed a simple control board based on an Arduino Nano board. It toggles a MOSFET to allow power to reach the catch, unlocking it. The Arduino does so when it reads an authorized fingerprint through a small fingerprint scanner.

    The final challenge, which GreatScott! is still sorting out, was running power. There isn’t an available outlet nearby, so he is searching for a solution. His partner vetoed a long wire channel, which means that GreatScott! may need to run power wires through the wall. Once he does, he’ll have a smart lock that meets all of his requirements.

    [youtube https://www.youtube.com/watch?v=FtztBE1Zwu8?feature=oembed&w=500&h=281]

    The post GreatScott! childproofs his lab with a fingerprint-reading smart lock appeared first on Arduino Blog.

    Website: LINK

  • This smartlock uses voice recognition to control access

    This smartlock uses voice recognition to control access

    Reading Time: 2 minutes

    A Smartlock are a highly convenient way to secure a house, and they can have their number of connectivity options expanded even further by connecting them to an IoT home assistant service such as Google Assistant or Amazon Alexa.

    Arduino Team — July 16th, 2022

    Jithin Sanal’s project uses Amazon’s Alexa skill to automatically secure a custom door locking mechanism without the need for Bluetooth or a fingerprint.

     

     It is based around a Nano RP2040 Connect, and due to its onboard connectivity suite, can talk with the Arduino Cloud.

     

    Other than the Nano, Sanal designed a simple PCB. With pads for a buzzer, voltage regulator, and several LEDs for monitoring.

    The circuit also includes a relay that applies power to a solenoid.
    Which acts as a deadbolt when power is applied.

    After receiving the bare PCB and soldering each component onto it, Sanal moved onto writing the code for his creation. In simple terms, the Arduino Cloud project contains a single variable for getting/setting the value of the lock.

    [youtube https://www.youtube.com/watch?v=QE4WQh3YQWs?feature=oembed&w=500&h=281]

    A method is called in the fw that sets the solenoid to this new state and makes a few beeps with the buzzer.

     

    Associating the Arduino Alexa skill with the IoT device, thus letting someone set the lock as a dedicated Smartlock device.

    You can see more details on this project in Sanal’s Hackster.io write-up.

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    Website: LINK