Excursion into: Secret knock detectors
Recently, i’ve been getting bored and wanting to make things. I also stumbled upon a nice article on instructables where it detailed how to make a secret knock detector for your door. It uses an arduino and various parts and it detects the pattern of your knocks on a door. If you get it right, the door unlocks and you can walk in, if you get it wrong, nothing happens.
It intrigued me as I have some interesting ideas for my final major project next year, and this could be part of one. So I decided to see how easy it was to build.
Turns out very. After following the guide, everything worked just fine. It picked up knocking on a table and some L.E.D’s flashed to let me know I got it right or wrong and it’s pretty reliable to boot.
When you get the knock right
When you get the knock wrong.
I haven’t got the motor working yet as I don’t have the right parts to hook up a motor yet. I think. I have to look into that. His way seems very complicated as I thought you could control a motor a little bit more simply than that.
But that’s for future Jon to deal with.
