I've made an iButton garagedoor opener and logger.
On a Dutch (kind of) eBay (www.marktplaats.nl) I found some iButtons and readers very cheap. I had no idea what to do with them, but I bought them anyway.
My garage opens with a push on a button, so it must be possible to get that working with the iButton.
I also found some really cheap (0,50 euro) displays, so it would be nice if I also can make a screen to show me who entered when.
The project is now existing in three parts:
- The iButton opening the door
- A clock keeping track of times and dates
- A screen showing the information
Step 1: You will need
- iButton reader
- 2 push buttons
- power supply
- 2 10 kOhms resistors
- 220 Ohms resistor
- 2,2 kOhms resistor
- 10 kOhms potmeter
- LCD-display with HD44780 controller
- NPN transistor
- 1N4001 diode
- some wire
- soldering iron
- computer with Arduino software
- a LED