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  • jabelone commented on robotgeek_official's instructable RFID Door Lock With Arduino6 months ago
    RFID Door Lock With Arduino

    Yeah be careful, I recently lost my keys so I decided to "hot wire" my car cause I thought it would be easy, and it was. However, as I found out just before I drove off, the steering wheel on some cars remains *mechanically* locked unless the key is inserted.

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  • Fix an Arduino that only works via USB (blown regulator)

    Hey,Depending on the regulator you get it might be expecting a certain combination of resistors to set the output correctly. If you got exactly the same one I linked then I'm not sure sorry. I had a quick look at the arduino schematic and I couldn't think of anything else. I would suggest posting on either the arduino or an electronics forum with the exact regulator you bought and your observations. One other thing you could try (which I've done before) is to simply chuck a 5v source onto the 5v rail by supplying it through the 5v pin. If your printer uses an old PC power supply you can tap into the 5v rail on this or you can try putting the regulator separate from the arduino and doing the same thing. If you do this look up the data sheet of your regulator and wire the 12v to the...see more »Hey,Depending on the regulator you get it might be expecting a certain combination of resistors to set the output correctly. If you got exactly the same one I linked then I'm not sure sorry. I had a quick look at the arduino schematic and I couldn't think of anything else. I would suggest posting on either the arduino or an electronics forum with the exact regulator you bought and your observations. One other thing you could try (which I've done before) is to simply chuck a 5v source onto the 5v rail by supplying it through the 5v pin. If your printer uses an old PC power supply you can tap into the 5v rail on this or you can try putting the regulator separate from the arduino and doing the same thing. If you do this look up the data sheet of your regulator and wire the 12v to the input and the 5v pin to the output.As a last resort or temporary work around you could use an old phone charger and plug it into the arduino.

    Awesome! Glad to hear it Antonio.

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