Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Nano, a DRV8825 stepper motor driver, a bipolar stepper motor, an SD module, a 12V to 5V step-down power converter, and a 12V 5A power supply. The circuit is designed to control a stepper motor and interface with an SD card for data storage.

Component List

1. Arduino Nano

   • Description: A compact microcontroller board based on the ATmega328P.
   • Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

2. DRV8825

   • Description: A stepper motor driver capable of driving bipolar stepper motors.
   • Pins: ENABLE, MS1, MS2, MS3, RESET, SLEEP, STEP, DIR, GND, FAULT, 1B, 1A, 2A, 2B, VMOT

3. Stepper Motor (Bipolar)

   • Description: A bipolar stepper motor with four pins.
   • Pins: D, B, C, A

4. SD Module

   • Description: An SD card module for data storage.
   • Pins: GND, VCC (5V), MISO (D12), MOSI (D11), SCK (D13), CS (D10)

5. 12V to 5V Step Down Power Converter

   • Description: A power converter that steps down 12V to 5V.
   • Pins: VIN 9v-36v, VIN+, VIN-, USB OUTPUT 5V, 5v OUTPUT, GND

6. Power Supply 12V 5A

   • Description: A power supply providing 12V at 5A.
   • Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)

Wiring Details

Arduino Nano

• GND connected to:

  • SD Module GND
  • 12V to 5V Step Down Power Converter GND

• VIN connected to:

  • SD Module VCC (5V)
  • 12V to 5V Step Down Power Converter 5V OUTPUT

• D3: No connection

• D8: No connection

• D7: No connection

• D6: No connection

• D5: No connection

• D12/MISO connected to:

  • SD Module MISO (D12)

• D11/MOSI connected to:

  • SD Module MOSI (D11)

• D13/SCK connected to:

  • SD Module SCK (D13)

• D10 connected to:

  • SD Module CS (D10)

DRV8825

• No connections specified in the provided net list.

Stepper Motor (Bipolar)

• D: No connection
• B: No connection
• C: No connection
• A: No connection

SD Module

• GND connected to:

  • Arduino Nano GND
  • 12V to 5V Step Down Power Converter GND

• VCC (5V) connected to:

  • Arduino Nano VIN
  • 12V to 5V Step Down Power Converter 5V OUTPUT

• MISO (D12) connected to:

  • Arduino Nano D12/MISO

• MOSI (D11) connected to:

  • Arduino Nano D11/MOSI

• SCK (D13) connected to:

  • Arduino Nano D13/SCK

• CS (D10) connected to:

  • Arduino Nano D10

12V to 5V Step Down Power Converter

• GND connected to:

  • Arduino Nano GND
  • SD Module GND

• 5V OUTPUT connected to:

  • Arduino Nano VIN
  • SD Module VCC (5V)

• VIN- connected to:

  • Power Supply 12V 5A GND (DC)

• VIN+ connected to:

  • Power Supply 12V 5A 12V-24V Output (DC)

Power Supply 12V 5A

• GND (DC) connected to:

  • 12V to 5V Step Down Power Converter VIN-

• 12V-24V Output (DC) connected to:

  • 12V to 5V Step Down Power Converter VIN+

Documented Code

Arduino Nano 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 Nano, with empty setup and loop functions. You can add your specific setup and main code to these functions as needed.