|
This is a project that I have been working on, it is just completed and ready to go! The video may be a bit dry since it is just going over the features and how to use the controller. If you want to see it interfaced to a rotary phone have a look at around 7:40 minutes into the video. The Button Code is a system that allows a single button to act as a keypad. The user enters a 4 digit code into the system using button taps. The button can be placed where the public can access it since like a keypad there are many combinations to keep guessers from activation the system. When the correct code is entered a form-C relay is activated (Normally Open and Normally Closed relay contacts). When activated it can either activate for a programmed time or simply toggle the output whenever the correct code is entered. This simple circuit allow for simple control of things such as:
To purchase this controller please have a look at our online store.
|
December 8th, 2009
I will feature this project on my web page today, if you don’t have any complaints
December 8th, 2009
Thanks Muris.
December 8th, 2009
Nicely done. Good job interfacing all the functionalities through only 2 wires
Lots of options, too. While you’re at it, you could add the possibility to trigger the relay through the serial port, to enable home automation kind of stuff. Also you should print the max. switchable current on the product page, the relay says 10A but maybe the traces can’t hold it (hard to see through the PCB ^^).
December 8th, 2009
Great project!
December 8th, 2009
Hi Vic,
I will have to add that. The max current is 2.5A
December 8th, 2009
Nice kit.
Quite some heatsink too, im guessing thats necessary for the relay and the ability to use 9 volt battery’s.
December 8th, 2009
how much milliamps does it use behind the regulator @5volts ?
December 8th, 2009
Very nicely implemented.
The “single button keypad” reminds me of the
“Stealth Keyless Entry System”
http://www.circuitcellar.com/avr2004/HA3548.html
December 8th, 2009
Hi Oler,
The heatsink is needed since the relay could be activated continuously. When the relay is activated the circuit current draw is 100mA.
December 8th, 2009
Hey David,
Nice find! Looks like someone else had the same idea.
December 8th, 2009
Nice project, I like the way it can easily be setup to accept the old rotary phone as input (I’m currently trying (via auctions) to buy some old rotary phones for projects at the moment).
When the video started and it showed your name I was wondering how your last name is pronounced, luckily for me (and my curiosity) you pronounced it at the end of the video
December 8th, 2009
I love the 1-button implementation, that makes it extremely versatile… I could imagine a dozen different contexts and devices that could be used with it.
The rotary phone use is awesome btw, connect it to a hidden door in the floor and you can be like a james bond villan.
December 9th, 2009
The rotary phone use is awesome btw, connect it to a hidden door in the floor and you can be like a james
December 9th, 2009
Is this the next prize in the contest?
December 9th, 2009
This is a very nice idea, nobody would suspect the little button to be a combination lock.
Oh and you can dial telephone numbers in the same way with a switch(thats why a rotary phone also works on it)
December 15th, 2009
Hi Paul,
I am thinking this would make a great contest prize.