iButton

iButton

A highly durable chip with a unique address from Maxim Integrated Products (www.maximintegrated.com) that is used for many purposes, such as building access, personal information, asset management, guard tours and tracking. Housed in a 16mm aluminum or stainless steel can that looks like a watch battery, iButtons are small enough to be attached to a key fob or finger ring.

Data are transferred in and out of the iButton when the can makes momentary contact with a reader/writer connected to a computer via a simple Maxim interface (see 1-Wire).


iButton and Reader
Looking like a watch battery, this iButton is resting on top of the reader. iButtons are rugged identification devices, and their top and side are the two contacts.







A Unique Serial Number
Every iButton has its own serial number laser etched into the case.
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References in periodicals archive ?
Do even more with optional peripherals such as a receipt printer, barcode scanner, fingerprint reader for added security, cash drawer, and iButton reader.
The average ambient temperature, recorded in one-hour intervals throughout the 6-month study period (Thermochron iButton, Maxim Integrated, San Jose, California, USA) inside the military camp was 22.3 [+ or -] 4.3[degrees]C (range: 11-36[degrees]C).
Temperature loggers (Thermocron iButton DS1921G) that recorded nest temperature every 15 min were placed in 52 nests, allowing us to determine the timing of nest failure, identified by a sudden drop to ambient temperature.
For the Boston study, dime-size iButton sensors were clipped to belt buckles or bags, while for the Alabama study, slightly larger HOBO Pendant sensors were clipped to subjects' shoes.
Caption: A small sensor called an iButton is situated in clusters located on the interior and exterior to log temperatures every 10 minutes.
In addition, we recorded air temperature using an iButton temperature logger (Maxim Integrated, San Jose, CA) programmed to take 1 reading every hour for the duration of the breeding season.
Lastly, we installed an iButton temperature logger (Maxim Integrated Products, San Jose, CA) on the northeastern aspect of each post in 2010 and 2011.
The measurement was accomplished with an iButton (Maxim Integrated, San Jose, USA).
The sensor of system (iButton) is a sophisticated digital thermometer (Figure 2).