He built this knock activated automatic door opener for a friend who wanted easy ... those in old dot matrix printers for free) and a small transistor amped mic circuit to pick up the knocks.

We've noticed in discussions on Reddit about smart garage door openers that Chamberlain comes up as a top recommendation. Our guide also covers affordable retrofit options, models that work with ...

so consider a higher horsepower for these even if they’re relatively small. If you do get a high-power opener for a lighter door, it will simply speed up the process, opening the door faster.

It’s called a smart garage door opener controller, and it’s a small pucklike device that you connect to your existing garage door opener’s motor that enables you to control it via the internet.

Q: It’s high time I install an automatic garage door opener. I have a two-car garage with a metal door in hinged sections. How do I get started? A: For your door, I recommend buying a one-half ...

Automatic door openers are not required by law ... says the cost of accommodation renovations can be tough for small businesses to pay for. (CBC) But change comes at too high a price for Kurt ...