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ESP8266 Clock

Hardware

  • Micropython ESP-WROOM-02D
  • adafruit Red 7-segment clock display
  • Registors:
    • 10K x3
  • Ceramic capacitors:
    • 0.1uF
  • 3.3V power supply
  • USB to TTL convertor
           3v3                     3v3             3v3
           ---                     ---             ---
            |   +-----------+       |               |   +--------+
            +---|3v3     RST|-[10K]-+               +---|3v3     |
USB to TTL      |           |          3v3              |        |
convertor       |        IO0|--->SDA   ---       IO0<---|SDA     |
         RXD<---|TXD        |           |               |        |
                |        IO2|--->SCL  [10K]      IO2<---|SCL     |
         TXD<---|RXD        |           |               |        |
                |         EN|-----------+           +---|GND     |
                |           |           |           |   +--------+
            +---|GND    IO15|-[10K]-+  --- 0.1uF    |   adafruit 7-segment
            |   +-----------+       |  ---         ---  clock display
            |   ESP-WROOM-02D       |   |           -
           ---                     --- ---         GND
            -                       -   -
           GND                     GND GND