It comes with adhesive backing or a flange to affix it to objects.It supports a multi-drop bus for connectivity of various 1-wire devices.For uniqueness and proper traceability of a particular peripheral, it is embedded with a 64-bit authentication number.The data can only be accessed if it is fastened to the device.
To be able to run this sketch, I first have to download the library from the site shown above and put this in the folder in the folder.
Now I run the sketch (code) like shown in iButton.pde and entered the code like it is shown in small letters on the iButton. put the LED with the long leg (anode) in pin 13 of the Arduino and the short leg (cathode) in GND.a wire from the – lane to the GND of the Arduino.the black wire of the iButton reader to the – lane of the breadboard.the grey wire of the iButton reader to the first lane of the breadboard.a wire from the first lane (where also the resistor is) to pin 2 on the Arduino.the resistor from the + lane to the first lane on the breadboard.a wire from 5V on the Arduino to the + lane on the breadboard.I wired it a little bit different than the drawing. With this drawing and the library it was easy to wire everything and get it running.Īccording to the schematics, I took my Arduino, a breadboard, the iButton reader, a 2,2 kOhms resistor, three wires and a LED. 1-Wire is the name of the communication method used by the iButtons. Trough the Arduino-site (I found the “Fridzing” drawing on. So I bought the parts. Now I had to find out how the things work. So to keep things understandable I try first to figure out the three parts separately. A clock keeping track of times and dates.The project is now existing in three parts: 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. My garage opens with a push on a button, so it must be possible to get that working with the iButton. I had no idea what to do with them, but I bought them anyway. On a Dutch (kind of) eBay ( I found some iButtons and readers very cheap. I’ve made an iButton garagedoor opener and logger.