Secret Knock Sensor (1.4)
Managed to get my secret knock sensor working tonight! A YouTube clip demonstrating sensor has been posted below.
You can even record a new knock sequence by attaching a button on the arduino which enables record mode (stores sequece to eeprom).
The latest version can be found here:
Much of the MySensors adopted secret knock code comes from this tutorial:
Vera lock device:
@hek Practically diabolical
Nice! Great you found some time to finish it
-- video moved to first post --
@hek Very neat. Now I have to find some place to use this
I'we always had in mind to make a "Clapper" switch but I guess this could be used for that purpose also, I'll give it a try.
Very nice addition to the sensor collection. Congratulations.
Have you tried to use a piezo sensor instead of a mic?
Something like this:
No couldn't find any around the house. But it should probably work. You might need to us analog input to tune it.
I have some arround so I'll try it one of these days and let you know.
How the heck would i know!!!
( might only be amusing to aussies..or just me.hahah)
Haha! Here are some Aussie jokes for you:
Q. What's a crocodile's favourite game?
Q. What's small, furry and bright purple?
A. A koala holding its breath!
Q. What do you call a boomerang that doesn't come back?
A. A stick!
Q. Why did the emu cross the road?
A. To prove he wasn't a chicken!
Q. Why did the dingo cross the road twice?
A. Because he was a double-crosser!
Q. What's a koala's favourite drink?
A. Coca Koala!
Q. What do crocodiles call children?
Q. What do you get when you cross a kangaroo with sheep?
A. A woolly jumper!
Q. What animal can jump higher than the Sydney Harbour Bridge?
A. All animals, because bridges can't jump!
Q. Why do kangaroo mums hate bad weather?
A. Their joeys have to play inside!
Oldies but goodies!