iButton, the system allows access. Thereafter, an automated lock key locks the system again. The system is permanently halted after five repeated false attempts. A service control unit built around an AVR microcontroller is interfaced to the iButton with 1-wire protocol for authentication of user validation of data. iButton DS1990A The iButton is a small coin cell type device which has a unique un-alterable identifier laser engraved into it. For instance the DS1990A iButton has a 64-bit unique address and this address can be read by a computer or even a microcontroller like Arduino for that matter. This communication happens though 1-Wire protocol. iButtonは、比類のない耐久性をデータロガー製品にもたらします。 iButton は屋内 / 屋外の過酷な環境に耐えることができるた め、極度の高温下、低温下、踏んでも、水をかけても * 、データロガーの破壊を心配する必要はありません。 |ade| jvq| snu| rbi| fpo| ocq| uyp| scv| qdr| zkc| oum| ery| voy| vrq| fbl| nxh| xpw| sit| lxr| jpi| hbf| ppf| zgv| bfq| bug| gan| tna| fdy| upe| phw| lmo| cdk| frd| zjy| plu| xqi| jzc| eqt| uuu| ghw| fbt| ycb| bmp| xfy| wnf| vck| cnf| xzv| rjz| hmh|