Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller interfacing with various components including an OLED display, an RTC module, an SD card breakout, a pushbutton, and an LED. The circuit is designed to demonstrate basic interfacing and control of these components using the Arduino platform.

Component List

1. Arduino Mega 2560

   • Description: A microcontroller board based on the ATmega2560.
   • Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D21/SCL, D20/SDA, D19/RX1, D18/TX1, D17 PWM/RX2, D16 PWM/TX2, D15/RX3, D14/TX3, D0 RX0, D1 TX0, D2 PWM, D3 PWM, D4 PWM, D5 PWM, D6 PWM, D7 PWM, D8 PWM, D9 PWM, D10 PWM, D11 PWM, D12 PWM, D13 PWM, AREF, SDA, SCL, D52, D50, D48, D46, D44, D42, D40, D38, D36, D34, D32, D30, D28, D26, D24, D22, D53, D51, D49, D47, D45, D43, D41, D39, D37, D35, D33, D31, D29, D27, D25, D23, 6swdw.

2. Adafruit DS1307 RTC Breakout

   • Description: A real-time clock module.
   • Pins: SQW, SCL, SDA, VCC, GND.

3. LED: Two Pin (blue)

   • Description: A blue LED with two pins.
   • Pins: Cathode, Anode.

4. Adafruit SDIO microSD Breakout

   • Description: A microSD card breakout board.
   • Pins: 3.3V, GND, SCLK, DO, DI, CS, DAT1, DAT2, CARDDET.

5. Pushbutton

   • Description: A simple pushbutton switch.
   • Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in).

6. 0.96" OLED

   • Description: A small OLED display.
   • Pins: GND, VDD, SCK, SDA.

7. DGS

   • Description: A generic component placeholder.
   • Pins: None specified.

8. Resistor

   • Description: A resistor with a resistance of 220 Ohms.
   • Pins: Pin1, Pin2.

Wiring Details

Arduino Mega 2560

• GND is connected to:

  • GND of 0.96" OLED
  • Pin 2 of Resistor
  • Pin 3 (out) of Pushbutton
  • GND of Adafruit DS1307 RTC Breakout
  • GND of Adafruit SDIO microSD Breakout
  • DGS

• 5V is connected to:

  • VDD of 0.96" OLED
  • VCC of Adafruit DS1307 RTC Breakout

• D21/SCL is connected to:

  • SCL of Adafruit DS1307 RTC Breakout
  • SCK of 0.96" OLED

• D20/SDA is connected to:

  • SDA of Adafruit DS1307 RTC Breakout
  • SDA of 0.96" OLED

• D22 is connected to:

  • Pin 2 (in) of Pushbutton

• D23 is connected to:

  • Anode of LED: Two Pin (blue)

• 3V3 is connected to:

  • 3.3V of Adafruit SDIO microSD Breakout
  • DGS

• D52 is connected to:

  • SCLK of Adafruit SDIO microSD Breakout

• D50 is connected to:

  • DO of Adafruit SDIO microSD Breakout

• D51 is connected to:

  • DI of Adafruit SDIO microSD Breakout

• D53 is connected to:

  • CS of Adafruit SDIO microSD Breakout

• D19/RX1 is connected to:

  • DGS

• D18/TX1 is connected to:

  • DGS

Adafruit DS1307 RTC Breakout

• GND is connected to:

  • GND of Arduino Mega 2560

• VCC is connected to:

  • 5V of Arduino Mega 2560

• SCL is connected to:

  • D21/SCL of Arduino Mega 2560
  • SCK of 0.96" OLED

• SDA is connected to:

  • D20/SDA of Arduino Mega 2560
  • SDA of 0.96" OLED

LED: Two Pin (blue)

• Anode is connected to:

  • D23 of Arduino Mega 2560

• Cathode is connected to:

  • Pin1 of Resistor

Adafruit SDIO microSD Breakout

• 3.3V is connected to:

  • 3V3 of Arduino Mega 2560
  • DGS

• GND is connected to:

  • GND of Arduino Mega 2560
  • DGS

• SCLK is connected to:

  • D52 of Arduino Mega 2560

• DO is connected to:

  • D50 of Arduino Mega 2560

• DI is connected to:

  • D51 of Arduino Mega 2560

• CS is connected to:

  • D53 of Arduino Mega 2560

Pushbutton

• Pin 3 (out) is connected to:

  • GND of Arduino Mega 2560

• Pin 2 (in) is connected to:

  • D22 of Arduino Mega 2560

0.96" OLED

• GND is connected to:

  • GND of Arduino Mega 2560

• VDD is connected to:

  • 5V of Arduino Mega 2560

• SCK is connected to:

  • D21/SCL of Arduino Mega 2560
  • SCL of Adafruit DS1307 RTC Breakout

• SDA is connected to:

  • D20/SDA of Arduino Mega 2560
  • SDA of Adafruit DS1307 RTC Breakout

Resistor

• Pin1 is connected to:

  • Cathode of LED: Two Pin (blue)

• Pin2 is connected to:

  • GND of Arduino Mega 2560

DGS

• Pin is connected to:
  • 3V3 of Arduino Mega 2560
  • GND of Arduino Mega 2560
  • D19/RX1 of Arduino Mega 2560
  • D18/TX1 of Arduino Mega 2560

Documented Code

Arduino Mega 2560 Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino Mega 2560. The setup() function is where you initialize your components and settings, and the loop() function is where you place the main code that runs repeatedly.