Designing a Driver Circuit for a Bipolar Stepper Motor Part 1

In this video we design a low cost driver circuit for a four wire bipolar stepper motor using two H bridges.

//********************Arduino code from video***********************
#include <Stepper.h>

const int numberOfSteps = 100;  //number of steps you want your stepper motor to take

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(numberOfSteps, 8, 9, 10, 11);

void setup() {
  // set the speed at 60 rpm:
  myStepper.setSpeed(60);
}

void loop() {
  myStepper.step(numberOfSteps);
  delay(1000);
}

Ultimate Battery Circuit Design Part 2

In this video series we build the ultimate battery circuit that can handle various battery chemistry's, charge batteries, perform load sharing during charging, handle input voltage levels that are higher or lower than the output, and more. In part 2 we will look at the PCB layout with a focus on the buck boost DC to DC Converter and look at the BOM.

Ultimate Battery Circuit Design Part 1

In this video series we build the ultimate battery circuit that can handle various battery chemistry's, charge batteries, perform load sharing during charging, handle input voltage levels that are higher or lower than the output, and more. In part 1 we will look at the circuit configuration and component values that we plan to use.