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  • The R/W operation in java ring is done by blue dot receptor provided by RS232 serial port adapter. DS1402D-DR8 is a 1-wire network cable designed to connect to any serial or USB 1-wire port that has up to two buttons simultaneously.
  • Information is transferred between an iButton and a PC with a momentary contact, at up to 142kbps.We just need to touch our iButton to a Blue Dot receptor or other iButton probe, which is connected to a PC.
  • The Blue Dot receptor is cabled to a 1-wire adapter that is attached to the PC's serial or parallel port.
  • Each receptor contains two Blue Dots to accommodate instances where multiple iButtons are required to complete a transaction.
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Q: What is the use of blue dot receptor in java ring?
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