Circuit Documentation

Summary

This circuit involves a Raspberry Pi Pico microcontroller, a DRV 8825 stepper motor driver, a Nema 17 stepper motor, a power supply, and an electrolytic capacitor. The Raspberry Pi Pico controls the DRV 8825, which in turn drives the Nema 17 stepper motor. The power supply provides the necessary voltage and current for the motor and driver, while the capacitor helps to stabilize the power supply.

Component List

Raspberry Pi Pico

• Description: A microcontroller board based on the RP2040 microcontroller chip.
• Pins: pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 19, pin 20, pin 21, pin 22, pin 23, pin 24, pin 25, pin 26, pin 27, pin 28, pin 29, pin 30, pin 31, pin 32, pin 33, pin 34, pin 35, pin 36, pin 37, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43

DRV 8825

• Description: A stepper motor driver capable of driving a bipolar stepper motor.
• Pins: EN, M0, M1, M2, RST, SLP, STEP, DIR, VMOT, GND MOTOR, B2, B1, A1, A2, FAULT, GND LOGIC

Nema 17 42-STH48

• Description: A bipolar stepper motor.
• Pins: A2 (black), A1 Green, B2 Red, B1 Blue

Power Supply

• Description: Provides the necessary voltage and current for the circuit.
• Pins: +, -, GND

Electrolytic Capacitor

• Description: A capacitor used to stabilize the power supply.
• Pins: +, -
• Properties:
  • Capacitance: 0.0001 Farads

Comment

• Description: Placeholder for comments in the circuit.
• Pins: None

Wiring Details

Raspberry Pi Pico

• pin 18 is connected to DRV 8825 GND LOGIC
• pin 21 is connected to DRV 8825 DIR
• pin 22 is connected to DRV 8825 STEP
• pin 40 is connected to DRV 8825 RST and DRV 8825 SLP

DRV 8825

• GND LOGIC is connected to Raspberry Pi Pico pin 18
• DIR is connected to Raspberry Pi Pico pin 21
• STEP is connected to Raspberry Pi Pico pin 22
• RST is connected to Raspberry Pi Pico pin 40
• SLP is connected to Raspberry Pi Pico pin 40
• VMOT is connected to Electrolytic Capacitor + and Power Supply +
• GND MOTOR is connected to Electrolytic Capacitor - and Power Supply -
• B2 is connected to Nema 17 42-STH48 A2 (black)
• B1 is connected to Nema 17 42-STH48 A1 Green
• A1 is connected to Nema 17 42-STH48 B2 Red
• A2 is connected to Nema 17 42-STH48 B1 Blue

Nema 17 42-STH48

• A2 (black) is connected to DRV 8825 B2
• A1 Green is connected to DRV 8825 B1
• B2 Red is connected to DRV 8825 A1
• B1 Blue is connected to DRV 8825 A2

Power Supply

• + is connected to Electrolytic Capacitor + and DRV 8825 VMOT
• - is connected to Electrolytic Capacitor - and DRV 8825 GND MOTOR

Electrolytic Capacitor

• + is connected to Power Supply + and DRV 8825 VMOT
• - is connected to Power Supply - and DRV 8825 GND MOTOR

Documented Code

Raspberry Pi Pico Code (sketch.ino)

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

}

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

}

Documentation (documentation.txt)