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Wi-Fi Controlled Clock with ESP8266, DS3231 RTC, and MAX7219 Display

Image of Wi-Fi Controlled Clock with ESP8266, DS3231 RTC, and MAX7219 Display

Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP8266 microcontroller, a DS3231 RTC module, and a MAX7219 8-digit 7-segment display. The ESP8266 serves as the main controller, interfacing with the RTC module for timekeeping and the 7-segment display for visual output.

Component List

DS3231 RTC

  • Description: Real-Time Clock module
  • Pins: 32K, SQW, SCL, SDA, VCC, GND

MAX7219 8 Digit 7 Segment

  • Description: 8-digit 7-segment display driver
  • Pins: VCC, GND, DIN, CS, CLK, DOUT, LOAD

ESP8266

  • Description: Wi-Fi microcontroller
  • Pins: 3V, G, D8, D7, D6, D5, D4, D3, D2, D1, D0, A0, S3, S2, S1, SC, S0, SK, EN, VIN, RST, VU

Wiring Details

DS3231 RTC

  • SCL connected to D1 of ESP8266
  • SDA connected to D2 of ESP8266
  • VCC connected to 3V of ESP8266
  • GND connected to G of ESP8266

MAX7219 8 Digit 7 Segment

  • VCC connected to 3V of ESP8266
  • GND connected to G of ESP8266
  • DIN connected to D7 of ESP8266
  • CS connected to D8 of ESP8266
  • CLK connected to D5 of ESP8266

ESP8266

  • 3V connected to VCC of DS3231 RTC and MAX7219 8 Digit 7 Segment
  • G connected to GND of DS3231 RTC and MAX7219 8 Digit 7 Segment
  • D1 connected to SCL of DS3231 RTC
  • D2 connected to SDA of DS3231 RTC
  • D5 connected to CLK of MAX7219 8 Digit 7 Segment
  • D7 connected to DIN of MAX7219 8 Digit 7 Segment
  • D8 connected to CS of MAX7219 8 Digit 7 Segment

Code

No code is provided for this circuit.


This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. The components are clearly described, and the wiring details ensure proper connections between the components.