Arduino with DS1994 iButton Real Time Clock

For Source Code see ibutton datalogger programmer project at:

http://arduinofun.blogspot.com/

DS1994 Clock up and running! Using Arduino 1 Wire Library to read 4 (1) byte clock registers which were bit shifted into a 32 bit long integer for total number of seconds from 1/1/1970. Ported Maxim's SDK seconds to date code to Arduino to get time and date. From data sheet, clock seconds data starts at 203h. Memory address: TA1 = 0x03h and TA2 = 0x02h. The iButton can be pcb mounted for projects requiring a real time clock. Using Newhaven LCD in I2C mode.

Category:

Howto & Style

Tags:

• Arduino
• DS1994
• iButton
• RTC

[StreetGerbil]

I have no idea what you have said but olimex rules. I got their MEGA128M board and JTAG and absolutely love both.

[kmiondeuvas]

visita olimex chile si eres de latinoamerica