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Tiny RTC

  • clock Arduino test
  • urtc.py Adafruit library for interfacing with ESP8266. Copy it over to /pyboard

Hookup

RTC:

+---------------------+
|                     |
|        ...          |
|       .   .         |
|       .   .         |
|        ...          |
|                     |
|  |   |   |   |   |  |
| GND VCC SDA SCL DS  |
+---------------------+

VCC s/b 5V
DS unused

     ARDUINO       ESP8266
SDA       A4     D2 (GPIO04)
SDL       A5     D1 (GPIO05)

See also

  • Tiny RTC - module based on clock chip DS1307