Overview
Things
Story

One Board to Rule Them All
Hardware
Firmware
What Makes The Difference

Published September 28, 2017 © GPL3+

DC Motors Controller Board

AVR ATmega32A MCU based, DC Motors speed/position/timing controller/testing board for Stepper, Servo, Gear motors and programmable too.

BeginnerShowcase (no instructions)3 hours4,815

Things used in this project

Hardware components

Microchip ATmega32U4

SparkFun Arduino Pro Mini 328 - 5V/16MHz

Texas Instruments Dual H-Bridge motor drivers L293D

LED (generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

OpenBuilds Drill Taps

Story

One Board to Rule Them All

It's a DC Motor Testing kit, also possible to convert in to some motor controlled project.

It was made long ago to demonstrate kids about DC motor control.It has pinouts for one 4 pole stepper, one servo, 2 DC Gear Motor control.

Motor Controller

Hardware

Three user switch

Three Input Status LEDs (RYG)

4 Red Output Status LEDs

10k Pot for Position Control

4 Outputs driven by L293D for Stepper Motor Drive

Small Servo Control/Power Terminals

Firmware

Arduino programmable according to following pinout.

Atmega32 AVR Arduino

Also programmable in C/Assembly in Atmel Studio. Any GPIO can do the functions!

What Makes The Difference?

There are 32 GPIOs vs Uno has 23 GPIO:

8 ADCs vs Uno has 6

3 Interruprs vs Uno has 2

Separate I2C pins

Separate Reset pin

This is not a project, just a project snippet!

Code

Mix of AVR and Arduino Style

#include <avr/io.h>
#include <util/delay.h>

// Step Sequence Generation for 4 Pole Stepper Motor !

int z =250;
int main()
{
DDRB |= 0x07;
PORTB &= ~(0x07);
while(1)
{
  for (int i=0;i<16;i++)
  {
    for(int j=0;j<3;j++)
    {
PORTB |= (1<<j);
_delay_ms(z);
PORTB &= ~(0x07);
    }
}
  
_delay_ms(500);
for (int i=0;i<12;i++)
  {
  for(int j=2;j>=0;j--)
    {
PORTB |= (1<<j);
_delay_ms(z);
PORTB &= ~(0x07);
    }

  }
}
 return (0); 
}

Credits

Shahariar

74 projects • 267 followers

"What Kills a 'Great life' is a 'Good Life', which is Living a Life Inside While Loop"

DC Motors Controller Board